[7841] | 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | import unittest, os, time |
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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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| 8 | from Scientific.IO.NetCDF import NetCDFFile |
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| 9 | from anuga.file.sww import extent_sww |
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| 10 | |
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| 11 | from anuga.config import g, epsilon |
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| 12 | from anuga.config import netcdf_mode_r, netcdf_mode_w, netcdf_mode_a |
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| 13 | from anuga.utilities.numerical_tools import mean, ensure_numeric |
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| 14 | from anuga.geometry.polygon import is_inside_polygon |
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| 15 | from anuga.coordinate_transforms.geo_reference import Geo_reference |
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| 16 | from anuga.geospatial_data.geospatial_data import Geospatial_data |
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| 17 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross, \ |
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| 18 | rectangular |
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| 19 | from anuga.abstract_2d_finite_volumes.quantity import Quantity |
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| 20 | from anuga.shallow_water.forcing import Inflow, Cross_section |
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| 21 | from anuga.geospatial_data.geospatial_data import ensure_geospatial |
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| 22 | |
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| 23 | from anuga.utilities.system_tools import get_pathname_from_package |
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| 24 | |
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| 25 | from anuga.abstract_2d_finite_volumes.generic_boundary_conditions \ |
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| 26 | import Dirichlet_boundary |
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| 27 | from anuga.shallow_water.forcing import Rainfall, Wind_stress |
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| 28 | from anuga.shallow_water.forcing import Inflow, Cross_section |
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| 29 | from anuga.shallow_water.sww_interrogate import get_flow_through_cross_section |
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| 30 | |
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| 31 | from shallow_water_domain import Domain |
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| 32 | |
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| 33 | # boundary functions |
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| 34 | from boundaries import Reflective_boundary, \ |
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| 35 | Field_boundary, Transmissive_momentum_set_stage_boundary, \ |
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| 36 | Transmissive_stage_zero_momentum_boundary |
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| 37 | from anuga.abstract_2d_finite_volumes.generic_boundary_conditions\ |
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| 38 | import Transmissive_boundary, Dirichlet_boundary, \ |
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| 39 | Time_boundary, File_boundary, AWI_boundary |
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| 40 | |
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| 41 | import numpy as num |
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| 42 | from anuga.config import g |
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| 43 | |
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| 44 | # Get gateway to C implementation of flux function for direct testing |
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| 45 | from shallow_water_ext import flux_function_central as flux_function |
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| 46 | from shallow_water_ext import rotate |
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| 47 | |
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| 48 | |
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| 49 | def set_bottom_friction(tag, elements, domain): |
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| 50 | if tag == "bottom": |
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| 51 | domain.set_quantity('friction', 0.09, indices = elements) |
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| 52 | |
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| 53 | def set_top_friction(tag, elements, domain): |
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| 54 | if tag == "top": |
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| 55 | domain.set_quantity('friction', 1., indices = elements) |
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| 56 | |
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| 57 | |
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| 58 | def set_all_friction(tag, elements, domain): |
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| 59 | if tag == 'all': |
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| 60 | new_values = domain.get_quantity('friction').get_values(indices = elements) + 10.0 |
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| 61 | |
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| 62 | domain.set_quantity('friction', new_values, indices = elements) |
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| 63 | |
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| 64 | |
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| 65 | # For test_fitting_using_shallow_water_domain example |
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| 66 | def linear_function(point): |
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| 67 | point = num.array(point) |
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| 68 | return point[:,0]+point[:,1] |
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| 69 | |
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| 70 | |
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| 71 | |
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| 72 | def scalar_func(t, x, y): |
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| 73 | """Function that returns a scalar. |
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| 74 | |
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| 75 | Used to test error message when numeric array is expected |
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| 76 | """ |
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| 77 | |
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| 78 | return 17.7 |
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| 79 | |
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| 80 | |
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| 81 | |
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| 82 | class Test_LoadSave(unittest.TestCase): |
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| 83 | def setUp(self): |
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| 84 | pass |
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| 85 | |
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| 86 | def tearDown(self): |
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| 87 | pass |
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| 88 | |
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| 89 | def test_get_flow_through_cross_section_with_geo(self): |
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| 90 | """test_get_flow_through_cross_section(self): |
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| 91 | |
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| 92 | Test that the total flow through a cross section can be |
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| 93 | correctly obtained at run-time from the ANUGA domain. |
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| 94 | |
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| 95 | This test creates a flat bed with a known flow through it and tests |
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| 96 | that the function correctly returns the expected flow. |
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| 97 | |
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| 98 | The specifics are |
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| 99 | e = -1 m |
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| 100 | u = 2 m/s |
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| 101 | h = 2 m |
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| 102 | w = 3 m (width of channel) |
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| 103 | |
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| 104 | q = u*h*w = 12 m^3/s |
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| 105 | |
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| 106 | This run tries it with georeferencing and with elevation = -1 |
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| 107 | """ |
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| 108 | |
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| 109 | # Create basic mesh (20m x 3m) |
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| 110 | width = 3 |
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| 111 | length = 20 |
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| 112 | t_end = 1 |
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| 113 | points, vertices, boundary = rectangular(length, width, length, width) |
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| 114 | |
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| 115 | # Create shallow water domain |
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| 116 | domain = Domain(points, vertices, boundary, |
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| 117 | geo_reference=Geo_reference(56, 308500, 6189000)) |
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| 118 | |
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| 119 | domain.default_order = 2 |
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| 120 | domain.set_quantities_to_be_stored(None) |
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| 121 | |
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| 122 | e = -1.0 |
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| 123 | w = 1.0 |
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| 124 | h = w-e |
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| 125 | u = 2.0 |
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| 126 | uh = u*h |
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| 127 | |
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| 128 | Br = Reflective_boundary(domain) # Side walls |
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| 129 | Bd = Dirichlet_boundary([w, uh, 0]) # 2 m/s across the 3 m inlet: |
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| 130 | |
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| 131 | |
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| 132 | # Initial conditions |
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| 133 | domain.set_quantity('elevation', e) |
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| 134 | domain.set_quantity('stage', w) |
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| 135 | domain.set_quantity('xmomentum', uh) |
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| 136 | domain.set_boundary({'left': Bd, 'right': Bd, 'top': Br, 'bottom': Br}) |
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| 137 | |
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| 138 | # Interpolation points down the middle |
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| 139 | I = [[0, width/2.], |
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| 140 | [length/2., width/2.], |
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| 141 | [length, width/2.]] |
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| 142 | interpolation_points = domain.geo_reference.get_absolute(I) |
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| 143 | |
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| 144 | for t in domain.evolve(yieldstep=0.1, finaltime=0.5): |
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| 145 | # Shortcuts to quantites |
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| 146 | stage = domain.get_quantity('stage') |
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| 147 | xmomentum = domain.get_quantity('xmomentum') |
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| 148 | ymomentum = domain.get_quantity('ymomentum') |
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| 149 | |
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| 150 | # Check that quantities are they should be in the interior |
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| 151 | w_t = stage.get_values(interpolation_points) |
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| 152 | uh_t = xmomentum.get_values(interpolation_points) |
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| 153 | vh_t = ymomentum.get_values(interpolation_points) |
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| 154 | |
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| 155 | assert num.allclose(w_t, w) |
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| 156 | assert num.allclose(uh_t, uh) |
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| 157 | assert num.allclose(vh_t, 0.0, atol=1.0e-6) |
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| 158 | |
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| 159 | # Check flows through the middle |
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| 160 | for i in range(5): |
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| 161 | x = length/2. + i*0.23674563 # Arbitrary |
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| 162 | cross_section = [[x, 0], [x, width]] |
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| 163 | |
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| 164 | cross_section = domain.geo_reference.get_absolute(cross_section) |
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| 165 | Q = domain.get_flow_through_cross_section(cross_section, |
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| 166 | verbose=False) |
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| 167 | |
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| 168 | assert num.allclose(Q, uh*width) |
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| 169 | |
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| 170 | import cPickle |
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| 171 | cPickle.dump(domain, open('domain_pickle.txt', 'w')) |
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| 172 | domain_restored = cPickle.load(open('domain_pickle.txt')) |
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| 173 | |
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| 174 | for t in domain_restored.evolve(yieldstep=0.1, finaltime=1.0): |
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| 175 | # Shortcuts to quantites |
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| 176 | stage = domain_restored.get_quantity('stage') |
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| 177 | xmomentum = domain_restored.get_quantity('xmomentum') |
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| 178 | ymomentum = domain_restored.get_quantity('ymomentum') |
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| 179 | |
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| 180 | # Check that quantities are they should be in the interior |
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| 181 | w_t = stage.get_values(interpolation_points) |
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| 182 | uh_t = xmomentum.get_values(interpolation_points) |
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| 183 | vh_t = ymomentum.get_values(interpolation_points) |
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| 184 | |
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| 185 | assert num.allclose(w_t, w) |
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| 186 | assert num.allclose(uh_t, uh) |
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| 187 | assert num.allclose(vh_t, 0.0, atol=1.0e-6) |
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| 188 | |
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| 189 | # Check flows through the middle |
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| 190 | for i in range(5): |
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| 191 | x = length/2. + i*0.23674563 # Arbitrary |
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| 192 | cross_section = [[x, 0], [x, width]] |
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| 193 | |
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| 194 | cross_section = domain_restored.geo_reference.get_absolute(cross_section) |
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| 195 | Q = domain_restored.get_flow_through_cross_section(cross_section, |
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| 196 | verbose=False) |
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| 197 | |
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| 198 | assert num.allclose(Q, uh*width) |
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| 199 | |
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| 200 | |
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| 201 | |
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| 202 | #------------------------------------------------------------- |
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| 203 | |
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| 204 | if __name__ == "__main__": |
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| 205 | suite = unittest.makeSuite(Test_LoadSave, 'test') |
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| 206 | runner = unittest.TextTestRunner() #verbosity=2) |
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| 207 | runner.run(suite) |
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