[7726] | 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | import unittest, os |
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| 4 | import os.path |
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| 5 | from math import pi, sqrt |
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| 6 | import tempfile |
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| 7 | |
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[7736] | 8 | from anuga.config import g, epsilon, \ |
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| 9 | netcdf_mode_r, netcdf_mode_w, netcdf_mode_a |
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[7726] | 10 | from anuga.geometry.polygon import is_inside_polygon |
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| 11 | from anuga.coordinate_transforms.geo_reference import Geo_reference |
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| 12 | from anuga.abstract_2d_finite_volumes.quantity import Quantity |
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| 13 | from anuga.geospatial_data.geospatial_data import Geospatial_data |
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| 14 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross |
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| 15 | |
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| 16 | from anuga.utilities.system_tools import get_pathname_from_package |
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[7736] | 17 | from anuga.utilities.numerical_tools import ensure_numeric, mean |
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[7726] | 18 | |
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[7736] | 19 | from shallow_water_domain import Domain |
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| 20 | from boundaries import Reflective_boundary |
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| 21 | from forcing import Wind_stress, Inflow, Rainfall |
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[7743] | 22 | from anuga.file_conversion.file_conversion import timefile2netcdf |
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[7736] | 23 | |
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[7726] | 24 | import numpy as num |
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| 25 | |
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| 26 | # Get gateway to C implementation of flux function for direct testing |
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| 27 | from shallow_water_ext import flux_function_central as flux_function |
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| 28 | |
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| 29 | # Variable windfield implemented using functions |
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| 30 | def speed(t, x, y): |
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| 31 | """Large speeds halfway between center and edges |
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| 32 | |
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| 33 | Low speeds at center and edges |
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| 34 | """ |
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| 35 | |
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| 36 | from math import exp, cos, pi |
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| 37 | |
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| 38 | x = num.array(x) |
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| 39 | y = num.array(y) |
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| 40 | |
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| 41 | N = len(x) |
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| 42 | s = 0*x #New array |
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| 43 | |
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| 44 | for k in range(N): |
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| 45 | r = num.sqrt(x[k]**2 + y[k]**2) |
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| 46 | factor = exp(-(r-0.15)**2) |
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| 47 | s[k] = 4000 * factor * (cos(t*2*pi/150) + 2) |
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| 48 | |
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| 49 | return s |
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| 50 | |
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| 51 | def angle(t, x, y): |
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| 52 | """Rotating field |
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| 53 | """ |
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| 54 | from math import atan, pi |
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| 55 | |
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| 56 | x = num.array(x) |
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| 57 | y = num.array(y) |
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| 58 | |
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| 59 | N = len(x) |
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| 60 | a = 0 * x # New array |
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| 61 | |
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| 62 | for k in range(N): |
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| 63 | r = num.sqrt(x[k]**2 + y[k]**2) |
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| 64 | |
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| 65 | angle = atan(y[k]/x[k]) |
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| 66 | |
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| 67 | if x[k] < 0: |
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| 68 | angle += pi |
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| 69 | |
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| 70 | # Take normal direction |
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| 71 | angle -= pi/2 |
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| 72 | |
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| 73 | # Ensure positive radians |
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| 74 | if angle < 0: |
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| 75 | angle += 2*pi |
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| 76 | |
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| 77 | a[k] = angle/pi*180 |
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| 78 | |
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| 79 | return a |
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| 80 | |
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| 81 | |
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| 82 | def scalar_func(t, x, y): |
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| 83 | """Function that returns a scalar. |
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| 84 | |
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| 85 | Used to test error message when numeric array is expected |
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| 86 | """ |
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| 87 | |
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| 88 | return 17.7 |
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| 89 | |
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| 90 | def scalar_func_list(t, x, y): |
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| 91 | """Function that returns a scalar. |
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| 92 | |
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| 93 | Used to test error message when numeric array is expected |
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| 94 | """ |
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| 95 | |
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| 96 | return [17.7] |
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| 97 | |
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| 98 | class Test_forcing_terms(unittest.TestCase): |
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| 99 | def setUp(self): |
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| 100 | pass |
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| 101 | |
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| 102 | def tearDown(self): |
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| 103 | pass |
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| 104 | |
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| 105 | |
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| 106 | def test_gravity(self): |
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| 107 | #Assuming no friction |
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| 108 | |
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| 109 | from anuga.config import g |
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| 110 | |
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| 111 | a = [0.0, 0.0] |
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| 112 | b = [0.0, 2.0] |
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| 113 | c = [2.0, 0.0] |
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| 114 | d = [0.0, 4.0] |
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| 115 | e = [2.0, 2.0] |
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| 116 | f = [4.0, 0.0] |
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| 117 | |
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| 118 | points = [a, b, c, d, e, f] |
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| 119 | # bac, bce, ecf, dbe |
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| 120 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
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| 121 | |
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| 122 | domain = Domain(points, vertices) |
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| 123 | |
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| 124 | #Set up for a gradient of (3,0) at mid triangle (bce) |
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| 125 | def slope(x, y): |
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| 126 | return 3*x |
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| 127 | |
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| 128 | h = 0.1 |
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| 129 | def stage(x, y): |
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| 130 | return slope(x, y) + h |
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| 131 | |
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| 132 | domain.set_quantity('elevation', slope) |
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| 133 | domain.set_quantity('stage', stage) |
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| 134 | |
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| 135 | for name in domain.conserved_quantities: |
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| 136 | assert num.allclose(domain.quantities[name].explicit_update, 0) |
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| 137 | assert num.allclose(domain.quantities[name].semi_implicit_update, 0) |
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| 138 | |
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| 139 | domain.compute_forcing_terms() |
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| 140 | |
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| 141 | assert num.allclose(domain.quantities['stage'].explicit_update, 0) |
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| 142 | assert num.allclose(domain.quantities['xmomentum'].explicit_update, |
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| 143 | -g*h*3) |
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| 144 | assert num.allclose(domain.quantities['ymomentum'].explicit_update, 0) |
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| 145 | |
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[7736] | 146 | # FIXME: James these tests are failing - are they outdated? |
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| 147 | def NOtest_manning_friction(self): |
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[7726] | 148 | from anuga.config import g |
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| 149 | |
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| 150 | a = [0.0, 0.0] |
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| 151 | b = [0.0, 2.0] |
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| 152 | c = [2.0, 0.0] |
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| 153 | d = [0.0, 4.0] |
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| 154 | e = [2.0, 2.0] |
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| 155 | f = [4.0, 0.0] |
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| 156 | |
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| 157 | points = [a, b, c, d, e, f] |
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| 158 | # bac, bce, ecf, dbe |
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| 159 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
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| 160 | |
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| 161 | domain = Domain(points, vertices) |
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| 162 | |
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| 163 | #Set up for a gradient of (3,0) at mid triangle (bce) |
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| 164 | def slope(x, y): |
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| 165 | return 3*x |
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| 166 | |
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| 167 | h = 0.1 |
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| 168 | def stage(x, y): |
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| 169 | return slope(x, y) + h |
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| 170 | |
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| 171 | eta = 0.07 |
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| 172 | domain.set_quantity('elevation', slope) |
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| 173 | domain.set_quantity('stage', stage) |
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| 174 | domain.set_quantity('friction', eta) |
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| 175 | |
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| 176 | for name in domain.conserved_quantities: |
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| 177 | assert num.allclose(domain.quantities[name].explicit_update, 0) |
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| 178 | assert num.allclose(domain.quantities[name].semi_implicit_update, 0) |
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| 179 | |
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| 180 | domain.compute_forcing_terms() |
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| 181 | |
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| 182 | assert num.allclose(domain.quantities['stage'].explicit_update, 0) |
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| 183 | assert num.allclose(domain.quantities['xmomentum'].explicit_update, |
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| 184 | -g*h*3) |
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| 185 | assert num.allclose(domain.quantities['ymomentum'].explicit_update, 0) |
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| 186 | |
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| 187 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 188 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 189 | 0) |
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| 190 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 191 | 0) |
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| 192 | |
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| 193 | #Create some momentum for friction to work with |
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| 194 | domain.set_quantity('xmomentum', 1) |
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| 195 | S = -g*eta**2 / h**(7.0/3) |
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| 196 | |
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| 197 | domain.compute_forcing_terms() |
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| 198 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 199 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 200 | S) |
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| 201 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 202 | 0) |
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| 203 | |
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| 204 | #A more complex example |
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| 205 | domain.quantities['stage'].semi_implicit_update[:] = 0.0 |
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| 206 | domain.quantities['xmomentum'].semi_implicit_update[:] = 0.0 |
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| 207 | domain.quantities['ymomentum'].semi_implicit_update[:] = 0.0 |
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| 208 | |
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| 209 | domain.set_quantity('xmomentum', 3) |
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| 210 | domain.set_quantity('ymomentum', 4) |
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| 211 | |
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| 212 | S = -g*eta**2*5 / h**(7.0/3) |
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| 213 | |
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| 214 | domain.compute_forcing_terms() |
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| 215 | |
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| 216 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 217 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 218 | S) |
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| 219 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 220 | S) |
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| 221 | |
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| 222 | |
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| 223 | |
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[7736] | 224 | def NOtest_manning_friction_old(self): |
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[7726] | 225 | from anuga.config import g |
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| 226 | |
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| 227 | a = [0.0, 0.0] |
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| 228 | b = [0.0, 2.0] |
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| 229 | c = [2.0, 0.0] |
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| 230 | d = [0.0, 4.0] |
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| 231 | e = [2.0, 2.0] |
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| 232 | f = [4.0, 0.0] |
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| 233 | |
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| 234 | points = [a, b, c, d, e, f] |
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| 235 | # bac, bce, ecf, dbe |
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| 236 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
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| 237 | |
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| 238 | domain = Domain(points, vertices) |
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| 239 | |
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| 240 | #Set up for a gradient of (3,0) at mid triangle (bce) |
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| 241 | def slope(x, y): |
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| 242 | return 3*x |
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| 243 | |
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| 244 | h = 0.1 |
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| 245 | def stage(x, y): |
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| 246 | return slope(x, y) + h |
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| 247 | |
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| 248 | eta = 0.07 |
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| 249 | domain.set_quantity('elevation', slope) |
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| 250 | domain.set_quantity('stage', stage) |
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| 251 | domain.set_quantity('friction', eta) |
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| 252 | |
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| 253 | for name in domain.conserved_quantities: |
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| 254 | assert num.allclose(domain.quantities[name].explicit_update, 0) |
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| 255 | assert num.allclose(domain.quantities[name].semi_implicit_update, 0) |
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| 256 | |
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| 257 | domain.compute_forcing_terms() |
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| 258 | |
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| 259 | assert num.allclose(domain.quantities['stage'].explicit_update, 0) |
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| 260 | assert num.allclose(domain.quantities['xmomentum'].explicit_update, |
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| 261 | -g*h*3) |
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| 262 | assert num.allclose(domain.quantities['ymomentum'].explicit_update, 0) |
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| 263 | |
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| 264 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 265 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 266 | 0) |
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| 267 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 268 | 0) |
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| 269 | |
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| 270 | #Create some momentum for friction to work with |
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| 271 | domain.set_quantity('xmomentum', 1) |
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| 272 | S = -g*eta**2 / h**(7.0/3) |
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| 273 | |
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| 274 | domain.compute_forcing_terms() |
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| 275 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 276 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 277 | S) |
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| 278 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 279 | 0) |
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| 280 | |
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| 281 | #A more complex example |
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| 282 | domain.quantities['stage'].semi_implicit_update[:] = 0.0 |
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| 283 | domain.quantities['xmomentum'].semi_implicit_update[:] = 0.0 |
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| 284 | domain.quantities['ymomentum'].semi_implicit_update[:] = 0.0 |
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| 285 | |
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| 286 | domain.set_quantity('xmomentum', 3) |
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| 287 | domain.set_quantity('ymomentum', 4) |
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| 288 | # sqrt(3^2 +4^2) = 5 |
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| 289 | |
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| 290 | S = -g*eta**2 / h**(7.0/3) * 5 |
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| 291 | |
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| 292 | domain.compute_forcing_terms() |
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| 293 | |
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| 294 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 295 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 296 | S) |
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| 297 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 298 | S) |
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| 299 | |
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| 300 | |
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[7736] | 301 | def NOtest_manning_friction_new(self): |
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[7726] | 302 | from anuga.config import g |
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| 303 | |
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| 304 | a = [0.0, 0.0] |
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| 305 | b = [0.0, 2.0] |
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| 306 | c = [2.0, 0.0] |
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| 307 | d = [0.0, 4.0] |
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| 308 | e = [2.0, 2.0] |
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| 309 | f = [4.0, 0.0] |
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| 310 | |
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| 311 | points = [a, b, c, d, e, f] |
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| 312 | # bac, bce, ecf, dbe |
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| 313 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
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| 314 | |
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| 315 | domain = Domain(points, vertices) |
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| 316 | |
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| 317 | # Use the new function which takes into account the extra |
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| 318 | # wetted area due to slope of bed |
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| 319 | domain.set_new_mannings_function(True) |
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| 320 | |
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| 321 | #Set up for a gradient of (3,0) at mid triangle (bce) |
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| 322 | def slope(x, y): |
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| 323 | return 3*x |
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| 324 | |
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| 325 | h = 0.1 |
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| 326 | def stage(x, y): |
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| 327 | return slope(x, y) + h |
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| 328 | |
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| 329 | eta = 0.07 |
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| 330 | domain.set_quantity('elevation', slope) |
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| 331 | domain.set_quantity('stage', stage) |
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| 332 | domain.set_quantity('friction', eta) |
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| 333 | |
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| 334 | for name in domain.conserved_quantities: |
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| 335 | assert num.allclose(domain.quantities[name].explicit_update, 0) |
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| 336 | assert num.allclose(domain.quantities[name].semi_implicit_update, 0) |
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| 337 | |
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| 338 | domain.compute_forcing_terms() |
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| 339 | |
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| 340 | assert num.allclose(domain.quantities['stage'].explicit_update, 0) |
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| 341 | assert num.allclose(domain.quantities['xmomentum'].explicit_update, |
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| 342 | -g*h*3) |
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| 343 | assert num.allclose(domain.quantities['ymomentum'].explicit_update, 0) |
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| 344 | |
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| 345 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 346 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 347 | 0) |
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| 348 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 349 | 0) |
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| 350 | |
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| 351 | #Create some momentum for friction to work with |
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| 352 | domain.set_quantity('xmomentum', 1) |
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| 353 | S = -g*eta**2 / h**(7.0/3) * sqrt(10) |
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| 354 | |
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| 355 | domain.compute_forcing_terms() |
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| 356 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 357 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 358 | S) |
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| 359 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 360 | 0) |
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| 361 | |
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| 362 | #A more complex example |
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| 363 | domain.quantities['stage'].semi_implicit_update[:] = 0.0 |
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| 364 | domain.quantities['xmomentum'].semi_implicit_update[:] = 0.0 |
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| 365 | domain.quantities['ymomentum'].semi_implicit_update[:] = 0.0 |
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| 366 | |
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| 367 | domain.set_quantity('xmomentum', 3) |
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| 368 | domain.set_quantity('ymomentum', 4) |
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| 369 | |
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| 370 | S = -g*eta**2*5 / h**(7.0/3) * sqrt(10.0) |
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| 371 | |
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| 372 | domain.compute_forcing_terms() |
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| 373 | |
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| 374 | assert num.allclose(domain.quantities['stage'].semi_implicit_update, 0) |
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| 375 | assert num.allclose(domain.quantities['xmomentum'].semi_implicit_update, |
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| 376 | S) |
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| 377 | assert num.allclose(domain.quantities['ymomentum'].semi_implicit_update, |
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| 378 | S) |
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| 379 | |
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| 380 | def test_constant_wind_stress(self): |
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| 381 | from anuga.config import rho_a, rho_w, eta_w |
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| 382 | from math import pi, cos, sin |
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| 383 | |
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| 384 | a = [0.0, 0.0] |
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| 385 | b = [0.0, 2.0] |
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| 386 | c = [2.0, 0.0] |
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| 387 | d = [0.0, 4.0] |
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| 388 | e = [2.0, 2.0] |
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| 389 | f = [4.0, 0.0] |
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| 390 | |
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| 391 | points = [a, b, c, d, e, f] |
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| 392 | # bac, bce, ecf, dbe |
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| 393 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
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| 394 | |
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| 395 | domain = Domain(points, vertices) |
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| 396 | |
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| 397 | #Flat surface with 1m of water |
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| 398 | domain.set_quantity('elevation', 0) |
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| 399 | domain.set_quantity('stage', 1.0) |
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| 400 | domain.set_quantity('friction', 0) |
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| 401 | |
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| 402 | Br = Reflective_boundary(domain) |
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| 403 | domain.set_boundary({'exterior': Br}) |
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| 404 | |
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| 405 | #Setup only one forcing term, constant wind stress |
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| 406 | s = 100 |
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| 407 | phi = 135 |
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| 408 | domain.forcing_terms = [] |
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| 409 | domain.forcing_terms.append(Wind_stress(s, phi)) |
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| 410 | |
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| 411 | domain.compute_forcing_terms() |
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| 412 | |
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| 413 | const = eta_w*rho_a / rho_w |
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| 414 | |
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| 415 | #Convert to radians |
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| 416 | phi = phi*pi / 180 |
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| 417 | |
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| 418 | #Compute velocity vector (u, v) |
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| 419 | u = s*cos(phi) |
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| 420 | v = s*sin(phi) |
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| 421 | |
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| 422 | #Compute wind stress |
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| 423 | S = const * num.sqrt(u**2 + v**2) |
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| 424 | |
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| 425 | assert num.allclose(domain.quantities['stage'].explicit_update, 0) |
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| 426 | assert num.allclose(domain.quantities['xmomentum'].explicit_update, S*u) |
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| 427 | assert num.allclose(domain.quantities['ymomentum'].explicit_update, S*v) |
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| 428 | |
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| 429 | def test_variable_wind_stress(self): |
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| 430 | from anuga.config import rho_a, rho_w, eta_w |
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| 431 | from math import pi, cos, sin |
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| 432 | |
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| 433 | a = [0.0, 0.0] |
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| 434 | b = [0.0, 2.0] |
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| 435 | c = [2.0, 0.0] |
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| 436 | d = [0.0, 4.0] |
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| 437 | e = [2.0, 2.0] |
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| 438 | f = [4.0, 0.0] |
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| 439 | |
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| 440 | points = [a, b, c, d, e, f] |
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| 441 | # bac, bce, ecf, dbe |
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| 442 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
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| 443 | |
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| 444 | domain = Domain(points, vertices) |
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| 445 | |
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| 446 | #Flat surface with 1m of water |
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| 447 | domain.set_quantity('elevation', 0) |
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| 448 | domain.set_quantity('stage', 1.0) |
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| 449 | domain.set_quantity('friction', 0) |
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| 450 | |
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| 451 | Br = Reflective_boundary(domain) |
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| 452 | domain.set_boundary({'exterior': Br}) |
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| 453 | |
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| 454 | domain.time = 5.54 # Take a random time (not zero) |
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| 455 | |
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| 456 | #Setup only one forcing term, constant wind stress |
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| 457 | s = 100 |
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| 458 | phi = 135 |
---|
| 459 | domain.forcing_terms = [] |
---|
| 460 | domain.forcing_terms.append(Wind_stress(s=speed, phi=angle)) |
---|
| 461 | |
---|
| 462 | domain.compute_forcing_terms() |
---|
| 463 | |
---|
| 464 | #Compute reference solution |
---|
| 465 | const = eta_w*rho_a / rho_w |
---|
| 466 | |
---|
| 467 | N = len(domain) # number_of_triangles |
---|
| 468 | |
---|
| 469 | xc = domain.get_centroid_coordinates() |
---|
| 470 | t = domain.time |
---|
| 471 | |
---|
| 472 | x = xc[:,0] |
---|
| 473 | y = xc[:,1] |
---|
| 474 | s_vec = speed(t,x,y) |
---|
| 475 | phi_vec = angle(t,x,y) |
---|
| 476 | |
---|
| 477 | for k in range(N): |
---|
| 478 | # Convert to radians |
---|
| 479 | phi = phi_vec[k]*pi / 180 |
---|
| 480 | s = s_vec[k] |
---|
| 481 | |
---|
| 482 | # Compute velocity vector (u, v) |
---|
| 483 | u = s*cos(phi) |
---|
| 484 | v = s*sin(phi) |
---|
| 485 | |
---|
| 486 | # Compute wind stress |
---|
| 487 | S = const * num.sqrt(u**2 + v**2) |
---|
| 488 | |
---|
| 489 | assert num.allclose(domain.quantities['stage'].explicit_update[k], |
---|
| 490 | 0) |
---|
| 491 | assert num.allclose(domain.quantities['xmomentum'].\ |
---|
| 492 | explicit_update[k], |
---|
| 493 | S*u) |
---|
| 494 | assert num.allclose(domain.quantities['ymomentum'].\ |
---|
| 495 | explicit_update[k], |
---|
| 496 | S*v) |
---|
| 497 | |
---|
| 498 | def test_windfield_from_file(self): |
---|
| 499 | import time |
---|
| 500 | from anuga.config import rho_a, rho_w, eta_w |
---|
| 501 | from math import pi, cos, sin |
---|
| 502 | from anuga.config import time_format |
---|
| 503 | from anuga.abstract_2d_finite_volumes.util import file_function |
---|
| 504 | |
---|
| 505 | a = [0.0, 0.0] |
---|
| 506 | b = [0.0, 2.0] |
---|
| 507 | c = [2.0, 0.0] |
---|
| 508 | d = [0.0, 4.0] |
---|
| 509 | e = [2.0, 2.0] |
---|
| 510 | f = [4.0, 0.0] |
---|
| 511 | |
---|
| 512 | points = [a, b, c, d, e, f] |
---|
| 513 | # bac, bce, ecf, dbe |
---|
| 514 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 515 | |
---|
| 516 | domain = Domain(points, vertices) |
---|
| 517 | |
---|
| 518 | # Flat surface with 1m of water |
---|
| 519 | domain.set_quantity('elevation', 0) |
---|
| 520 | domain.set_quantity('stage', 1.0) |
---|
| 521 | domain.set_quantity('friction', 0) |
---|
| 522 | |
---|
| 523 | Br = Reflective_boundary(domain) |
---|
| 524 | domain.set_boundary({'exterior': Br}) |
---|
| 525 | |
---|
| 526 | domain.time = 7 # Take a time that is represented in file (not zero) |
---|
| 527 | |
---|
| 528 | # Write wind stress file (ensure that domain.time is covered) |
---|
| 529 | # Take x=1 and y=0 |
---|
| 530 | filename = 'test_windstress_from_file' |
---|
| 531 | start = time.mktime(time.strptime('2000', '%Y')) |
---|
| 532 | fid = open(filename + '.txt', 'w') |
---|
| 533 | dt = 1 # One second interval |
---|
| 534 | t = 0.0 |
---|
| 535 | while t <= 10.0: |
---|
| 536 | t_string = time.strftime(time_format, time.gmtime(t+start)) |
---|
| 537 | |
---|
| 538 | fid.write('%s, %f %f\n' % |
---|
| 539 | (t_string, speed(t,[1],[0])[0], angle(t,[1],[0])[0])) |
---|
| 540 | t += dt |
---|
| 541 | |
---|
| 542 | fid.close() |
---|
| 543 | |
---|
| 544 | # Convert ASCII file to NetCDF (Which is what we really like!) |
---|
| 545 | timefile2netcdf(filename) |
---|
| 546 | os.remove(filename + '.txt') |
---|
| 547 | |
---|
| 548 | # Setup wind stress |
---|
| 549 | F = file_function(filename + '.tms', |
---|
| 550 | quantities=['Attribute0', 'Attribute1']) |
---|
| 551 | os.remove(filename + '.tms') |
---|
| 552 | |
---|
| 553 | W = Wind_stress(F) |
---|
| 554 | |
---|
| 555 | domain.forcing_terms = [] |
---|
| 556 | domain.forcing_terms.append(W) |
---|
| 557 | |
---|
| 558 | domain.compute_forcing_terms() |
---|
| 559 | |
---|
| 560 | # Compute reference solution |
---|
| 561 | const = eta_w*rho_a / rho_w |
---|
| 562 | |
---|
| 563 | N = len(domain) # number_of_triangles |
---|
| 564 | |
---|
| 565 | t = domain.time |
---|
| 566 | |
---|
| 567 | s = speed(t, [1], [0])[0] |
---|
| 568 | phi = angle(t, [1], [0])[0] |
---|
| 569 | |
---|
| 570 | # Convert to radians |
---|
| 571 | phi = phi*pi / 180 |
---|
| 572 | |
---|
| 573 | # Compute velocity vector (u, v) |
---|
| 574 | u = s*cos(phi) |
---|
| 575 | v = s*sin(phi) |
---|
| 576 | |
---|
| 577 | # Compute wind stress |
---|
| 578 | S = const * num.sqrt(u**2 + v**2) |
---|
| 579 | |
---|
| 580 | for k in range(N): |
---|
| 581 | assert num.allclose(domain.quantities['stage'].explicit_update[k], |
---|
| 582 | 0) |
---|
| 583 | assert num.allclose(domain.quantities['xmomentum'].\ |
---|
| 584 | explicit_update[k], |
---|
| 585 | S*u) |
---|
| 586 | assert num.allclose(domain.quantities['ymomentum'].\ |
---|
| 587 | explicit_update[k], |
---|
| 588 | S*v) |
---|
| 589 | |
---|
| 590 | def test_windfield_from_file_seconds(self): |
---|
| 591 | import time |
---|
| 592 | from anuga.config import rho_a, rho_w, eta_w |
---|
| 593 | from math import pi, cos, sin |
---|
| 594 | from anuga.config import time_format |
---|
| 595 | from anuga.abstract_2d_finite_volumes.util import file_function |
---|
| 596 | |
---|
| 597 | a = [0.0, 0.0] |
---|
| 598 | b = [0.0, 2.0] |
---|
| 599 | c = [2.0, 0.0] |
---|
| 600 | d = [0.0, 4.0] |
---|
| 601 | e = [2.0, 2.0] |
---|
| 602 | f = [4.0, 0.0] |
---|
| 603 | |
---|
| 604 | points = [a, b, c, d, e, f] |
---|
| 605 | # bac, bce, ecf, dbe |
---|
| 606 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 607 | |
---|
| 608 | domain = Domain(points, vertices) |
---|
| 609 | |
---|
| 610 | # Flat surface with 1m of water |
---|
| 611 | domain.set_quantity('elevation', 0) |
---|
| 612 | domain.set_quantity('stage', 1.0) |
---|
| 613 | domain.set_quantity('friction', 0) |
---|
| 614 | |
---|
| 615 | Br = Reflective_boundary(domain) |
---|
| 616 | domain.set_boundary({'exterior': Br}) |
---|
| 617 | |
---|
| 618 | domain.time = 7 # Take a time that is represented in file (not zero) |
---|
| 619 | |
---|
| 620 | # Write wind stress file (ensure that domain.time is covered) |
---|
| 621 | # Take x=1 and y=0 |
---|
| 622 | filename = 'test_windstress_from_file' |
---|
| 623 | start = time.mktime(time.strptime('2000', '%Y')) |
---|
| 624 | fid = open(filename + '.txt', 'w') |
---|
| 625 | dt = 0.5 # Half second interval |
---|
| 626 | t = 0.0 |
---|
| 627 | while t <= 10.0: |
---|
| 628 | fid.write('%s, %f %f\n' |
---|
| 629 | % (str(t), speed(t, [1], [0])[0], angle(t, [1], [0])[0])) |
---|
| 630 | t += dt |
---|
| 631 | |
---|
| 632 | fid.close() |
---|
| 633 | |
---|
| 634 | # Convert ASCII file to NetCDF (Which is what we really like!) |
---|
| 635 | timefile2netcdf(filename, time_as_seconds=True) |
---|
| 636 | os.remove(filename + '.txt') |
---|
| 637 | |
---|
| 638 | # Setup wind stress |
---|
| 639 | F = file_function(filename + '.tms', |
---|
| 640 | quantities=['Attribute0', 'Attribute1']) |
---|
| 641 | os.remove(filename + '.tms') |
---|
| 642 | |
---|
| 643 | W = Wind_stress(F) |
---|
| 644 | |
---|
| 645 | domain.forcing_terms = [] |
---|
| 646 | domain.forcing_terms.append(W) |
---|
| 647 | |
---|
| 648 | domain.compute_forcing_terms() |
---|
| 649 | |
---|
| 650 | # Compute reference solution |
---|
| 651 | const = eta_w*rho_a / rho_w |
---|
| 652 | |
---|
| 653 | N = len(domain) # number_of_triangles |
---|
| 654 | |
---|
| 655 | t = domain.time |
---|
| 656 | |
---|
| 657 | s = speed(t, [1], [0])[0] |
---|
| 658 | phi = angle(t, [1], [0])[0] |
---|
| 659 | |
---|
| 660 | # Convert to radians |
---|
| 661 | phi = phi*pi / 180 |
---|
| 662 | |
---|
| 663 | # Compute velocity vector (u, v) |
---|
| 664 | u = s*cos(phi) |
---|
| 665 | v = s*sin(phi) |
---|
| 666 | |
---|
| 667 | # Compute wind stress |
---|
| 668 | S = const * num.sqrt(u**2 + v**2) |
---|
| 669 | |
---|
| 670 | for k in range(N): |
---|
| 671 | assert num.allclose(domain.quantities['stage'].explicit_update[k], |
---|
| 672 | 0) |
---|
| 673 | assert num.allclose(domain.quantities['xmomentum'].\ |
---|
| 674 | explicit_update[k], |
---|
| 675 | S*u) |
---|
| 676 | assert num.allclose(domain.quantities['ymomentum'].\ |
---|
| 677 | explicit_update[k], |
---|
| 678 | S*v) |
---|
| 679 | |
---|
| 680 | def test_wind_stress_error_condition(self): |
---|
| 681 | """Test that windstress reacts properly when forcing functions |
---|
| 682 | are wrong - e.g. returns a scalar |
---|
| 683 | """ |
---|
| 684 | |
---|
| 685 | from math import pi, cos, sin |
---|
| 686 | from anuga.config import rho_a, rho_w, eta_w |
---|
| 687 | |
---|
| 688 | a = [0.0, 0.0] |
---|
| 689 | b = [0.0, 2.0] |
---|
| 690 | c = [2.0, 0.0] |
---|
| 691 | d = [0.0, 4.0] |
---|
| 692 | e = [2.0, 2.0] |
---|
| 693 | f = [4.0, 0.0] |
---|
| 694 | |
---|
| 695 | points = [a, b, c, d, e, f] |
---|
| 696 | # bac, bce, ecf, dbe |
---|
| 697 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 698 | |
---|
| 699 | domain = Domain(points, vertices) |
---|
| 700 | |
---|
| 701 | # Flat surface with 1m of water |
---|
| 702 | domain.set_quantity('elevation', 0) |
---|
| 703 | domain.set_quantity('stage', 1.0) |
---|
| 704 | domain.set_quantity('friction', 0) |
---|
| 705 | |
---|
| 706 | Br = Reflective_boundary(domain) |
---|
| 707 | domain.set_boundary({'exterior': Br}) |
---|
| 708 | |
---|
| 709 | domain.time = 5.54 # Take a random time (not zero) |
---|
| 710 | |
---|
| 711 | # Setup only one forcing term, bad func |
---|
| 712 | domain.forcing_terms = [] |
---|
| 713 | |
---|
| 714 | try: |
---|
| 715 | domain.forcing_terms.append(Wind_stress(s=scalar_func_list, |
---|
| 716 | phi=angle)) |
---|
| 717 | except AssertionError: |
---|
| 718 | pass |
---|
| 719 | else: |
---|
| 720 | msg = 'Should have raised exception' |
---|
| 721 | raise Exception, msg |
---|
| 722 | |
---|
| 723 | try: |
---|
| 724 | domain.forcing_terms.append(Wind_stress(s=speed, phi=scalar_func)) |
---|
| 725 | except Exception: |
---|
| 726 | pass |
---|
| 727 | else: |
---|
| 728 | msg = 'Should have raised exception' |
---|
| 729 | raise Exception, msg |
---|
| 730 | |
---|
| 731 | try: |
---|
| 732 | domain.forcing_terms.append(Wind_stress(s=speed, phi='xx')) |
---|
| 733 | except: |
---|
| 734 | pass |
---|
| 735 | else: |
---|
| 736 | msg = 'Should have raised exception' |
---|
| 737 | raise Exception, msg |
---|
| 738 | |
---|
| 739 | |
---|
| 740 | def test_rainfall(self): |
---|
| 741 | from math import pi, cos, sin |
---|
| 742 | |
---|
| 743 | a = [0.0, 0.0] |
---|
| 744 | b = [0.0, 2.0] |
---|
| 745 | c = [2.0, 0.0] |
---|
| 746 | d = [0.0, 4.0] |
---|
| 747 | e = [2.0, 2.0] |
---|
| 748 | f = [4.0, 0.0] |
---|
| 749 | |
---|
| 750 | points = [a, b, c, d, e, f] |
---|
| 751 | # bac, bce, ecf, dbe |
---|
| 752 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 753 | |
---|
| 754 | domain = Domain(points, vertices) |
---|
| 755 | |
---|
| 756 | # Flat surface with 1m of water |
---|
| 757 | domain.set_quantity('elevation', 0) |
---|
| 758 | domain.set_quantity('stage', 1.0) |
---|
| 759 | domain.set_quantity('friction', 0) |
---|
| 760 | |
---|
| 761 | Br = Reflective_boundary(domain) |
---|
| 762 | domain.set_boundary({'exterior': Br}) |
---|
| 763 | |
---|
| 764 | # Setup only one forcing term, constant rainfall |
---|
| 765 | domain.forcing_terms = [] |
---|
| 766 | domain.forcing_terms.append(Rainfall(domain, rate=2.0)) |
---|
| 767 | |
---|
| 768 | domain.compute_forcing_terms() |
---|
| 769 | assert num.allclose(domain.quantities['stage'].explicit_update, |
---|
| 770 | 2.0/1000) |
---|
| 771 | |
---|
| 772 | def test_rainfall_restricted_by_polygon(self): |
---|
| 773 | from math import pi, cos, sin |
---|
| 774 | |
---|
| 775 | a = [0.0, 0.0] |
---|
| 776 | b = [0.0, 2.0] |
---|
| 777 | c = [2.0, 0.0] |
---|
| 778 | d = [0.0, 4.0] |
---|
| 779 | e = [2.0, 2.0] |
---|
| 780 | f = [4.0, 0.0] |
---|
| 781 | |
---|
| 782 | points = [a, b, c, d, e, f] |
---|
| 783 | # bac, bce, ecf, dbe |
---|
| 784 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 785 | |
---|
| 786 | domain = Domain(points, vertices) |
---|
| 787 | |
---|
| 788 | # Flat surface with 1m of water |
---|
| 789 | domain.set_quantity('elevation', 0) |
---|
| 790 | domain.set_quantity('stage', 1.0) |
---|
| 791 | domain.set_quantity('friction', 0) |
---|
| 792 | |
---|
| 793 | Br = Reflective_boundary(domain) |
---|
| 794 | domain.set_boundary({'exterior': Br}) |
---|
| 795 | |
---|
| 796 | # Setup only one forcing term, constant rainfall |
---|
| 797 | # restricted to a polygon enclosing triangle #1 (bce) |
---|
| 798 | domain.forcing_terms = [] |
---|
| 799 | R = Rainfall(domain, rate=2.0, polygon=[[1,1], [2,1], [2,2], [1,2]]) |
---|
| 800 | |
---|
| 801 | assert num.allclose(R.exchange_area, 2) |
---|
| 802 | |
---|
| 803 | domain.forcing_terms.append(R) |
---|
| 804 | |
---|
| 805 | domain.compute_forcing_terms() |
---|
| 806 | |
---|
| 807 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 808 | 2.0/1000) |
---|
| 809 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 0) |
---|
| 810 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 811 | |
---|
| 812 | def test_time_dependent_rainfall_restricted_by_polygon(self): |
---|
| 813 | a = [0.0, 0.0] |
---|
| 814 | b = [0.0, 2.0] |
---|
| 815 | c = [2.0, 0.0] |
---|
| 816 | d = [0.0, 4.0] |
---|
| 817 | e = [2.0, 2.0] |
---|
| 818 | f = [4.0, 0.0] |
---|
| 819 | |
---|
| 820 | points = [a, b, c, d, e, f] |
---|
| 821 | # bac, bce, ecf, dbe |
---|
| 822 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 823 | |
---|
| 824 | domain = Domain(points, vertices) |
---|
| 825 | |
---|
| 826 | # Flat surface with 1m of water |
---|
| 827 | domain.set_quantity('elevation', 0) |
---|
| 828 | domain.set_quantity('stage', 1.0) |
---|
| 829 | domain.set_quantity('friction', 0) |
---|
| 830 | |
---|
| 831 | Br = Reflective_boundary(domain) |
---|
| 832 | domain.set_boundary({'exterior': Br}) |
---|
| 833 | |
---|
| 834 | # Setup only one forcing term, time dependent rainfall |
---|
| 835 | # restricted to a polygon enclosing triangle #1 (bce) |
---|
| 836 | domain.forcing_terms = [] |
---|
| 837 | R = Rainfall(domain, |
---|
| 838 | rate=lambda t: 3*t + 7, |
---|
| 839 | polygon = [[1,1], [2,1], [2,2], [1,2]]) |
---|
| 840 | |
---|
| 841 | assert num.allclose(R.exchange_area, 2) |
---|
| 842 | |
---|
| 843 | domain.forcing_terms.append(R) |
---|
| 844 | |
---|
| 845 | domain.time = 10. |
---|
| 846 | |
---|
| 847 | domain.compute_forcing_terms() |
---|
| 848 | |
---|
| 849 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 850 | (3*domain.time + 7)/1000) |
---|
| 851 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 0) |
---|
| 852 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 853 | |
---|
| 854 | def test_time_dependent_rainfall_using_starttime(self): |
---|
| 855 | rainfall_poly = ensure_numeric([[1,1], [2,1], [2,2], [1,2]], num.float) |
---|
| 856 | |
---|
| 857 | a = [0.0, 0.0] |
---|
| 858 | b = [0.0, 2.0] |
---|
| 859 | c = [2.0, 0.0] |
---|
| 860 | d = [0.0, 4.0] |
---|
| 861 | e = [2.0, 2.0] |
---|
| 862 | f = [4.0, 0.0] |
---|
| 863 | |
---|
| 864 | points = [a, b, c, d, e, f] |
---|
| 865 | # bac, bce, ecf, dbe |
---|
| 866 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 867 | |
---|
| 868 | domain = Domain(points, vertices) |
---|
| 869 | |
---|
| 870 | # Flat surface with 1m of water |
---|
| 871 | domain.set_quantity('elevation', 0) |
---|
| 872 | domain.set_quantity('stage', 1.0) |
---|
| 873 | domain.set_quantity('friction', 0) |
---|
| 874 | |
---|
| 875 | Br = Reflective_boundary(domain) |
---|
| 876 | domain.set_boundary({'exterior': Br}) |
---|
| 877 | |
---|
| 878 | # Setup only one forcing term, time dependent rainfall |
---|
| 879 | # restricted to a polygon enclosing triangle #1 (bce) |
---|
| 880 | domain.forcing_terms = [] |
---|
| 881 | R = Rainfall(domain, |
---|
| 882 | rate=lambda t: 3*t + 7, |
---|
| 883 | polygon=rainfall_poly) |
---|
| 884 | |
---|
| 885 | assert num.allclose(R.exchange_area, 2) |
---|
| 886 | |
---|
| 887 | domain.forcing_terms.append(R) |
---|
| 888 | |
---|
| 889 | # This will test that time used in the forcing function takes |
---|
| 890 | # startime into account. |
---|
| 891 | domain.starttime = 5.0 |
---|
| 892 | |
---|
| 893 | domain.time = 7. |
---|
| 894 | |
---|
| 895 | domain.compute_forcing_terms() |
---|
| 896 | |
---|
| 897 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 898 | (3*domain.get_time() + 7)/1000) |
---|
| 899 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 900 | (3*(domain.time + domain.starttime) + 7)/1000) |
---|
| 901 | |
---|
| 902 | # Using internal time her should fail |
---|
| 903 | assert not num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 904 | (3*domain.time + 7)/1000) |
---|
| 905 | |
---|
| 906 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 0) |
---|
| 907 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 908 | |
---|
| 909 | def test_time_dependent_rainfall_using_georef(self): |
---|
| 910 | """test_time_dependent_rainfall_using_georef |
---|
| 911 | |
---|
| 912 | This will also test the General forcing term using georef |
---|
| 913 | """ |
---|
| 914 | |
---|
| 915 | # Mesh in zone 56 (absolute coords) |
---|
| 916 | x0 = 314036.58727982 |
---|
| 917 | y0 = 6224951.2960092 |
---|
| 918 | |
---|
| 919 | rainfall_poly = ensure_numeric([[1,1], [2,1], [2,2], [1,2]], num.float) |
---|
| 920 | rainfall_poly += [x0, y0] |
---|
| 921 | |
---|
| 922 | a = [0.0, 0.0] |
---|
| 923 | b = [0.0, 2.0] |
---|
| 924 | c = [2.0, 0.0] |
---|
| 925 | d = [0.0, 4.0] |
---|
| 926 | e = [2.0, 2.0] |
---|
| 927 | f = [4.0, 0.0] |
---|
| 928 | |
---|
| 929 | points = [a, b, c, d, e, f] |
---|
| 930 | # bac, bce, ecf, dbe |
---|
| 931 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 932 | |
---|
| 933 | domain = Domain(points, vertices, |
---|
| 934 | geo_reference=Geo_reference(56, x0, y0)) |
---|
| 935 | |
---|
| 936 | # Flat surface with 1m of water |
---|
| 937 | domain.set_quantity('elevation', 0) |
---|
| 938 | domain.set_quantity('stage', 1.0) |
---|
| 939 | domain.set_quantity('friction', 0) |
---|
| 940 | |
---|
| 941 | Br = Reflective_boundary(domain) |
---|
| 942 | domain.set_boundary({'exterior': Br}) |
---|
| 943 | |
---|
| 944 | # Setup only one forcing term, time dependent rainfall |
---|
| 945 | # restricted to a polygon enclosing triangle #1 (bce) |
---|
| 946 | domain.forcing_terms = [] |
---|
| 947 | R = Rainfall(domain, |
---|
| 948 | rate=lambda t: 3*t + 7, |
---|
| 949 | polygon=rainfall_poly) |
---|
| 950 | |
---|
| 951 | assert num.allclose(R.exchange_area, 2) |
---|
| 952 | |
---|
| 953 | domain.forcing_terms.append(R) |
---|
| 954 | |
---|
| 955 | # This will test that time used in the forcing function takes |
---|
| 956 | # startime into account. |
---|
| 957 | domain.starttime = 5.0 |
---|
| 958 | |
---|
| 959 | domain.time = 7. |
---|
| 960 | |
---|
| 961 | domain.compute_forcing_terms() |
---|
| 962 | |
---|
| 963 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 964 | (3*domain.get_time() + 7)/1000) |
---|
| 965 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 966 | (3*(domain.time + domain.starttime) + 7)/1000) |
---|
| 967 | |
---|
| 968 | # Using internal time her should fail |
---|
| 969 | assert not num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 970 | (3*domain.time + 7)/1000) |
---|
| 971 | |
---|
| 972 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 0) |
---|
| 973 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 974 | |
---|
| 975 | def test_time_dependent_rainfall_restricted_by_polygon_with_default(self): |
---|
| 976 | """ |
---|
| 977 | Test that default rainfall can be used when given rate runs out of data. |
---|
| 978 | """ |
---|
| 979 | |
---|
| 980 | a = [0.0, 0.0] |
---|
| 981 | b = [0.0, 2.0] |
---|
| 982 | c = [2.0, 0.0] |
---|
| 983 | d = [0.0, 4.0] |
---|
| 984 | e = [2.0, 2.0] |
---|
| 985 | f = [4.0, 0.0] |
---|
| 986 | |
---|
| 987 | points = [a, b, c, d, e, f] |
---|
| 988 | # bac, bce, ecf, dbe |
---|
| 989 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 990 | |
---|
| 991 | domain = Domain(points, vertices) |
---|
| 992 | |
---|
| 993 | # Flat surface with 1m of water |
---|
| 994 | domain.set_quantity('elevation', 0) |
---|
| 995 | domain.set_quantity('stage', 1.0) |
---|
| 996 | domain.set_quantity('friction', 0) |
---|
| 997 | |
---|
| 998 | Br = Reflective_boundary(domain) |
---|
| 999 | domain.set_boundary({'exterior': Br}) |
---|
| 1000 | |
---|
| 1001 | # Setup only one forcing term, time dependent rainfall |
---|
| 1002 | # that expires at t==20 |
---|
| 1003 | from anuga.fit_interpolate.interpolate import Modeltime_too_late |
---|
| 1004 | |
---|
| 1005 | def main_rate(t): |
---|
| 1006 | if t > 20: |
---|
| 1007 | msg = 'Model time exceeded.' |
---|
| 1008 | raise Modeltime_too_late, msg |
---|
| 1009 | else: |
---|
| 1010 | return 3*t + 7 |
---|
| 1011 | |
---|
| 1012 | domain.forcing_terms = [] |
---|
| 1013 | R = Rainfall(domain, |
---|
| 1014 | rate=main_rate, |
---|
| 1015 | polygon = [[1,1], [2,1], [2,2], [1,2]], |
---|
| 1016 | default_rate=5.0) |
---|
| 1017 | |
---|
| 1018 | assert num.allclose(R.exchange_area, 2) |
---|
| 1019 | |
---|
| 1020 | domain.forcing_terms.append(R) |
---|
| 1021 | |
---|
| 1022 | domain.time = 10. |
---|
| 1023 | |
---|
| 1024 | domain.compute_forcing_terms() |
---|
| 1025 | |
---|
| 1026 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 1027 | (3*domain.time+7)/1000) |
---|
| 1028 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 0) |
---|
| 1029 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 1030 | |
---|
| 1031 | domain.time = 100. |
---|
| 1032 | domain.quantities['stage'].explicit_update[:] = 0.0 # Reset |
---|
| 1033 | domain.compute_forcing_terms() |
---|
| 1034 | |
---|
| 1035 | assert num.allclose(domain.quantities['stage'].explicit_update[1], |
---|
| 1036 | 5.0/1000) # Default value |
---|
| 1037 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 0) |
---|
| 1038 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 1039 | |
---|
| 1040 | def test_rainfall_forcing_with_evolve(self): |
---|
| 1041 | """test_rainfall_forcing_with_evolve |
---|
| 1042 | |
---|
| 1043 | Test how forcing terms are called within evolve |
---|
| 1044 | """ |
---|
| 1045 | |
---|
| 1046 | # FIXME(Ole): This test is just to experiment |
---|
| 1047 | |
---|
| 1048 | a = [0.0, 0.0] |
---|
| 1049 | b = [0.0, 2.0] |
---|
| 1050 | c = [2.0, 0.0] |
---|
| 1051 | d = [0.0, 4.0] |
---|
| 1052 | e = [2.0, 2.0] |
---|
| 1053 | f = [4.0, 0.0] |
---|
| 1054 | |
---|
| 1055 | points = [a, b, c, d, e, f] |
---|
| 1056 | # bac, bce, ecf, dbe |
---|
| 1057 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 1058 | |
---|
| 1059 | domain = Domain(points, vertices) |
---|
| 1060 | |
---|
| 1061 | # Flat surface with 1m of water |
---|
| 1062 | domain.set_quantity('elevation', 0) |
---|
| 1063 | domain.set_quantity('stage', 1.0) |
---|
| 1064 | domain.set_quantity('friction', 0) |
---|
| 1065 | |
---|
| 1066 | Br = Reflective_boundary(domain) |
---|
| 1067 | domain.set_boundary({'exterior': Br}) |
---|
| 1068 | |
---|
| 1069 | # Setup only one forcing term, time dependent rainfall |
---|
| 1070 | # that expires at t==20 |
---|
| 1071 | from anuga.fit_interpolate.interpolate import Modeltime_too_late |
---|
| 1072 | |
---|
| 1073 | def main_rate(t): |
---|
| 1074 | if t > 20: |
---|
| 1075 | msg = 'Model time exceeded.' |
---|
| 1076 | raise Modeltime_too_late, msg |
---|
| 1077 | else: |
---|
| 1078 | return 3*t + 7 |
---|
| 1079 | |
---|
| 1080 | domain.forcing_terms = [] |
---|
| 1081 | R = Rainfall(domain, |
---|
| 1082 | rate=main_rate, |
---|
| 1083 | polygon=[[1,1], [2,1], [2,2], [1,2]], |
---|
| 1084 | default_rate=5.0) |
---|
| 1085 | |
---|
| 1086 | assert num.allclose(R.exchange_area, 2) |
---|
| 1087 | |
---|
| 1088 | domain.forcing_terms.append(R) |
---|
| 1089 | |
---|
| 1090 | for t in domain.evolve(yieldstep=1, finaltime=25): |
---|
| 1091 | pass |
---|
| 1092 | #FIXME(Ole): A test here is hard because explicit_update also |
---|
| 1093 | # receives updates from the flux calculation. |
---|
| 1094 | |
---|
| 1095 | |
---|
| 1096 | def test_rainfall_forcing_with_evolve_1(self): |
---|
| 1097 | """test_rainfall_forcing_with_evolve |
---|
| 1098 | |
---|
| 1099 | Test how forcing terms are called within evolve. |
---|
| 1100 | This test checks that proper exception is thrown when no default_rate is set |
---|
| 1101 | """ |
---|
| 1102 | |
---|
| 1103 | |
---|
| 1104 | a = [0.0, 0.0] |
---|
| 1105 | b = [0.0, 2.0] |
---|
| 1106 | c = [2.0, 0.0] |
---|
| 1107 | d = [0.0, 4.0] |
---|
| 1108 | e = [2.0, 2.0] |
---|
| 1109 | f = [4.0, 0.0] |
---|
| 1110 | |
---|
| 1111 | points = [a, b, c, d, e, f] |
---|
| 1112 | # bac, bce, ecf, dbe |
---|
| 1113 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 1114 | |
---|
| 1115 | domain = Domain(points, vertices) |
---|
| 1116 | |
---|
| 1117 | # Flat surface with 1m of water |
---|
| 1118 | domain.set_quantity('elevation', 0) |
---|
| 1119 | domain.set_quantity('stage', 1.0) |
---|
| 1120 | domain.set_quantity('friction', 0) |
---|
| 1121 | |
---|
| 1122 | Br = Reflective_boundary(domain) |
---|
| 1123 | domain.set_boundary({'exterior': Br}) |
---|
| 1124 | |
---|
| 1125 | # Setup only one forcing term, time dependent rainfall |
---|
| 1126 | # that expires at t==20 |
---|
| 1127 | from anuga.fit_interpolate.interpolate import Modeltime_too_late |
---|
| 1128 | |
---|
| 1129 | def main_rate(t): |
---|
| 1130 | if t > 20: |
---|
| 1131 | msg = 'Model time exceeded.' |
---|
| 1132 | raise Modeltime_too_late, msg |
---|
| 1133 | else: |
---|
| 1134 | return 3*t + 7 |
---|
| 1135 | |
---|
| 1136 | domain.forcing_terms = [] |
---|
| 1137 | R = Rainfall(domain, |
---|
| 1138 | rate=main_rate, |
---|
| 1139 | polygon=[[1,1], [2,1], [2,2], [1,2]]) |
---|
| 1140 | |
---|
| 1141 | |
---|
| 1142 | assert num.allclose(R.exchange_area, 2) |
---|
| 1143 | |
---|
| 1144 | domain.forcing_terms.append(R) |
---|
| 1145 | #for t in domain.evolve(yieldstep=1, finaltime=25): |
---|
| 1146 | # pass |
---|
| 1147 | |
---|
| 1148 | try: |
---|
| 1149 | for t in domain.evolve(yieldstep=1, finaltime=25): |
---|
| 1150 | pass |
---|
| 1151 | except Modeltime_too_late, e: |
---|
| 1152 | # Test that error message is as expected |
---|
| 1153 | assert 'can specify keyword argument default_rate in the forcing function' in str(e) |
---|
| 1154 | else: |
---|
| 1155 | raise Exception, 'Should have raised exception' |
---|
| 1156 | |
---|
| 1157 | |
---|
| 1158 | |
---|
| 1159 | def test_inflow_using_circle(self): |
---|
| 1160 | from math import pi, cos, sin |
---|
| 1161 | |
---|
| 1162 | a = [0.0, 0.0] |
---|
| 1163 | b = [0.0, 2.0] |
---|
| 1164 | c = [2.0, 0.0] |
---|
| 1165 | d = [0.0, 4.0] |
---|
| 1166 | e = [2.0, 2.0] |
---|
| 1167 | f = [4.0, 0.0] |
---|
| 1168 | |
---|
| 1169 | points = [a, b, c, d, e, f] |
---|
| 1170 | # bac, bce, ecf, dbe |
---|
| 1171 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 1172 | |
---|
| 1173 | domain = Domain(points, vertices) |
---|
| 1174 | |
---|
| 1175 | # Flat surface with 1m of water |
---|
| 1176 | domain.set_quantity('elevation', 0) |
---|
| 1177 | domain.set_quantity('stage', 1.0) |
---|
| 1178 | domain.set_quantity('friction', 0) |
---|
| 1179 | |
---|
| 1180 | Br = Reflective_boundary(domain) |
---|
| 1181 | domain.set_boundary({'exterior': Br}) |
---|
| 1182 | |
---|
| 1183 | # Setup only one forcing term, constant inflow of 2 m^3/s |
---|
| 1184 | # on a circle affecting triangles #0 and #1 (bac and bce) |
---|
| 1185 | domain.forcing_terms = [] |
---|
| 1186 | |
---|
| 1187 | I = Inflow(domain, rate=2.0, center=(1,1), radius=1) |
---|
| 1188 | domain.forcing_terms.append(I) |
---|
| 1189 | domain.compute_forcing_terms() |
---|
| 1190 | |
---|
| 1191 | |
---|
| 1192 | A = I.exchange_area |
---|
| 1193 | assert num.allclose(A, 4) # Two triangles |
---|
| 1194 | |
---|
| 1195 | assert num.allclose(domain.quantities['stage'].explicit_update[1], 2.0/A) |
---|
| 1196 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 2.0/A) |
---|
| 1197 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 1198 | |
---|
| 1199 | |
---|
| 1200 | def test_inflow_using_circle_function(self): |
---|
| 1201 | from math import pi, cos, sin |
---|
| 1202 | |
---|
| 1203 | a = [0.0, 0.0] |
---|
| 1204 | b = [0.0, 2.0] |
---|
| 1205 | c = [2.0, 0.0] |
---|
| 1206 | d = [0.0, 4.0] |
---|
| 1207 | e = [2.0, 2.0] |
---|
| 1208 | f = [4.0, 0.0] |
---|
| 1209 | |
---|
| 1210 | points = [a, b, c, d, e, f] |
---|
| 1211 | # bac, bce, ecf, dbe |
---|
| 1212 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 1213 | |
---|
| 1214 | domain = Domain(points, vertices) |
---|
| 1215 | |
---|
| 1216 | # Flat surface with 1m of water |
---|
| 1217 | domain.set_quantity('elevation', 0) |
---|
| 1218 | domain.set_quantity('stage', 1.0) |
---|
| 1219 | domain.set_quantity('friction', 0) |
---|
| 1220 | |
---|
| 1221 | Br = Reflective_boundary(domain) |
---|
| 1222 | domain.set_boundary({'exterior': Br}) |
---|
| 1223 | |
---|
| 1224 | # Setup only one forcing term, time dependent inflow of 2 m^3/s |
---|
| 1225 | # on a circle affecting triangles #0 and #1 (bac and bce) |
---|
| 1226 | domain.forcing_terms = [] |
---|
| 1227 | I = Inflow(domain, rate=lambda t: 2., center=(1,1), radius=1) |
---|
| 1228 | domain.forcing_terms.append(I) |
---|
| 1229 | |
---|
| 1230 | domain.compute_forcing_terms() |
---|
| 1231 | |
---|
| 1232 | A = I.exchange_area |
---|
| 1233 | assert num.allclose(A, 4) # Two triangles |
---|
| 1234 | |
---|
| 1235 | assert num.allclose(domain.quantities['stage'].explicit_update[1], 2.0/A) |
---|
| 1236 | assert num.allclose(domain.quantities['stage'].explicit_update[0], 2.0/A) |
---|
| 1237 | assert num.allclose(domain.quantities['stage'].explicit_update[2:], 0) |
---|
| 1238 | |
---|
| 1239 | |
---|
| 1240 | |
---|
| 1241 | |
---|
| 1242 | def test_inflow_catch_too_few_triangles(self): |
---|
| 1243 | """ |
---|
| 1244 | Test that exception is thrown if no triangles are covered |
---|
| 1245 | by the inflow area |
---|
| 1246 | """ |
---|
| 1247 | |
---|
| 1248 | from math import pi, cos, sin |
---|
| 1249 | |
---|
| 1250 | a = [0.0, 0.0] |
---|
| 1251 | b = [0.0, 2.0] |
---|
| 1252 | c = [2.0, 0.0] |
---|
| 1253 | d = [0.0, 4.0] |
---|
| 1254 | e = [2.0, 2.0] |
---|
| 1255 | f = [4.0, 0.0] |
---|
| 1256 | |
---|
| 1257 | points = [a, b, c, d, e, f] |
---|
| 1258 | # bac, bce, ecf, dbe |
---|
| 1259 | vertices = [[1,0,2], [1,2,4], [4,2,5], [3,1,4]] |
---|
| 1260 | |
---|
| 1261 | domain = Domain(points, vertices) |
---|
| 1262 | |
---|
| 1263 | # Flat surface with 1m of water |
---|
| 1264 | domain.set_quantity('elevation', 0) |
---|
| 1265 | domain.set_quantity('stage', 1.0) |
---|
| 1266 | domain.set_quantity('friction', 0) |
---|
| 1267 | |
---|
| 1268 | Br = Reflective_boundary(domain) |
---|
| 1269 | domain.set_boundary({'exterior': Br}) |
---|
| 1270 | |
---|
| 1271 | # Setup only one forcing term, constant inflow of 2 m^3/s |
---|
| 1272 | # on a circle affecting triangles #0 and #1 (bac and bce) |
---|
| 1273 | try: |
---|
| 1274 | Inflow(domain, rate=2.0, center=(1,1.1), radius=0.01) |
---|
| 1275 | except: |
---|
| 1276 | pass |
---|
| 1277 | else: |
---|
| 1278 | msg = 'Should have raised exception' |
---|
| 1279 | raise Exception, msg |
---|
| 1280 | |
---|
| 1281 | |
---|
| 1282 | |
---|
| 1283 | ################################################################################# |
---|
| 1284 | |
---|
| 1285 | if __name__ == "__main__": |
---|
| 1286 | #suite = unittest.makeSuite(Test_forcing_terms, 'test_volume_conservation_rain') |
---|
[7736] | 1287 | #FIXME: James - these tests seem to be invalid. Please investigate |
---|
[7726] | 1288 | suite = unittest.makeSuite(Test_forcing_terms, 'test') |
---|
| 1289 | runner = unittest.TextTestRunner(verbosity=1) |
---|
| 1290 | runner.run(suite) |
---|