| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | |
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| 4 | import unittest |
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| 5 | import os.path |
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| 6 | import sys |
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| 7 | |
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| 8 | from anuga.utilities.system_tools import get_pathname_from_package |
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| 9 | from anuga.utilities.polygon import Polygon_function |
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| 10 | |
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| 11 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross |
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| 12 | from anuga.abstract_2d_finite_volumes.quantity import Quantity |
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| 13 | |
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| 14 | from anuga.shallow_water import Domain, Reflective_boundary,\ |
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| 15 | Dirichlet_boundary,\ |
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| 16 | Transmissive_boundary, Time_boundary |
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| 17 | |
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| 18 | from anuga.culvert_flows.culvert_class import Culvert_flow, Culvert_flow_rating, Culvert_flow_energy |
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| 19 | from anuga.culvert_flows.culvert_routines import boyd_generalised_culvert_model |
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| 20 | |
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| 21 | from math import pi,pow,sqrt |
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| 22 | |
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| 23 | import numpy as num |
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| 24 | |
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| 25 | |
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| 26 | class Test_Culvert(unittest.TestCase): |
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| 27 | def setUp(self): |
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| 28 | pass |
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| 29 | |
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| 30 | def tearDown(self): |
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| 31 | pass |
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| 32 | |
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| 33 | |
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| 34 | def test_that_culvert_runs_rating(self): |
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| 35 | """test_that_culvert_runs_rating |
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| 36 | |
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| 37 | This test exercises the culvert and checks values outside rating curve |
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| 38 | are dealt with |
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| 39 | """ |
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| 40 | |
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| 41 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 42 | |
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| 43 | length = 40. |
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| 44 | width = 5. |
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| 45 | |
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| 46 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 47 | |
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| 48 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 49 | int(width/dy), |
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| 50 | len1=length, |
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| 51 | len2=width) |
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| 52 | domain = Domain(points, vertices, boundary) |
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| 53 | domain.set_name('Test_culvert') # Output name |
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| 54 | domain.set_default_order(2) |
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| 55 | |
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| 56 | |
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| 57 | #---------------------------------------------------------------------- |
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| 58 | # Setup initial conditions |
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| 59 | #---------------------------------------------------------------------- |
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| 60 | |
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| 61 | def topography(x, y): |
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| 62 | """Set up a weir |
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| 63 | |
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| 64 | A culvert will connect either side |
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| 65 | """ |
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| 66 | # General Slope of Topography |
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| 67 | z=-x/1000 |
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| 68 | |
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| 69 | N = len(x) |
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| 70 | for i in range(N): |
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| 71 | |
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| 72 | # Sloping Embankment Across Channel |
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| 73 | if 5.0 < x[i] < 10.1: |
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| 74 | # Cut Out Segment for Culvert face |
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| 75 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 76 | z[i]=z[i] |
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| 77 | else: |
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| 78 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 79 | if 10.0 < x[i] < 12.1: |
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| 80 | z[i] += 2.5 # Flat Crest of Embankment |
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| 81 | if 12.0 < x[i] < 14.5: |
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| 82 | # Cut Out Segment for Culvert face |
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| 83 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 84 | z[i]=z[i] |
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| 85 | else: |
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| 86 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 87 | |
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| 88 | |
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| 89 | return z |
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| 90 | |
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| 91 | |
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| 92 | domain.set_quantity('elevation', topography) |
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| 93 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 94 | domain.set_quantity('stage', |
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| 95 | expression='elevation') # Dry initial condition |
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| 96 | |
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| 97 | filename=os.path.join(path, 'example_rating_curve.csv') |
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| 98 | culvert = Culvert_flow(domain, |
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| 99 | culvert_description_filename=filename, |
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| 100 | end_point0=[9.0, 2.5], |
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| 101 | end_point1=[13.0, 2.5], |
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| 102 | use_velocity_head=True, |
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| 103 | verbose=False) |
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| 104 | |
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| 105 | domain.forcing_terms.append(culvert) |
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| 106 | |
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| 107 | |
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| 108 | #----------------------------------------------------------------------- |
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| 109 | # Setup boundary conditions |
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| 110 | #----------------------------------------------------------------------- |
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| 111 | |
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| 112 | # Inflow based on Flow Depth and Approaching Momentum |
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| 113 | Bi = Dirichlet_boundary([0.0, 0.0, 0.0]) |
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| 114 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 115 | Bo = Dirichlet_boundary([-5, 0, 0]) # Outflow |
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| 116 | |
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| 117 | # Upstream and downstream conditions that will exceed the rating curve |
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| 118 | # I.e produce delta_h outside the range [0, 10] specified in the the |
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| 119 | # file example_rating_curve.csv |
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| 120 | Btus = Time_boundary(domain, lambda t: [100*num.sin(2*pi*(t-4)/10), 0.0, 0.0]) |
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| 121 | Btds = Time_boundary(domain, lambda t: [-5*(num.cos(2*pi*(t-4)/20)), 0.0, 0.0]) |
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| 122 | domain.set_boundary({'left': Btus, 'right': Btds, 'top': Br, 'bottom': Br}) |
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| 123 | |
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| 124 | |
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| 125 | #----------------------------------------------------------------------- |
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| 126 | # Evolve system through time |
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| 127 | #----------------------------------------------------------------------- |
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| 128 | |
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| 129 | min_delta_w = sys.maxint |
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| 130 | max_delta_w = -min_delta_w |
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| 131 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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| 132 | delta_w = culvert.inlet.stage - culvert.outlet.stage |
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| 133 | |
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| 134 | if delta_w > max_delta_w: max_delta_w = delta_w |
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| 135 | if delta_w < min_delta_w: min_delta_w = delta_w |
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| 136 | |
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| 137 | #print domain.timestepping_statistics() |
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| 138 | pass |
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| 139 | |
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| 140 | # Check that extreme values in rating curve have been exceeded |
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| 141 | # so that we know that condition has been exercised |
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| 142 | assert min_delta_w < 0 |
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| 143 | assert max_delta_w > 10 |
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| 144 | |
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| 145 | |
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| 146 | def test_that_culvert_dry_bed_rating_does_not_produce_flow(self): |
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| 147 | """test_that_culvert_in_dry_bed_does_not_produce_flow(self): |
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| 148 | |
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| 149 | Test that culvert on a sloping dry bed doesn't produce flows |
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| 150 | although there will be a 'pressure' head due to delta_w > 0 |
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| 151 | |
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| 152 | This one is using the rating curve variant |
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| 153 | """ |
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| 154 | |
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| 155 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 156 | |
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| 157 | length = 40. |
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| 158 | width = 5. |
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| 159 | |
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| 160 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 161 | |
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| 162 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 163 | int(width/dy), |
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| 164 | len1=length, |
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| 165 | len2=width) |
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| 166 | domain = Domain(points, vertices, boundary) |
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| 167 | domain.set_name('Test_culvert_dry') # Output name |
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| 168 | domain.set_default_order(2) |
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| 169 | |
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| 170 | |
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| 171 | #---------------------------------------------------------------------- |
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| 172 | # Setup initial conditions |
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| 173 | #---------------------------------------------------------------------- |
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| 174 | |
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| 175 | def topography(x, y): |
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| 176 | """Set up a weir |
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| 177 | |
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| 178 | A culvert will connect either side |
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| 179 | """ |
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| 180 | # General Slope of Topography |
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| 181 | z=-x/1000 |
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| 182 | |
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| 183 | N = len(x) |
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| 184 | for i in range(N): |
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| 185 | |
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| 186 | # Sloping Embankment Across Channel |
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| 187 | if 5.0 < x[i] < 10.1: |
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| 188 | # Cut Out Segment for Culvert face |
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| 189 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 190 | z[i]=z[i] |
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| 191 | else: |
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| 192 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 193 | if 10.0 < x[i] < 12.1: |
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| 194 | z[i] += 2.5 # Flat Crest of Embankment |
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| 195 | if 12.0 < x[i] < 14.5: |
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| 196 | # Cut Out Segment for Culvert face |
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| 197 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 198 | z[i]=z[i] |
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| 199 | else: |
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| 200 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 201 | |
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| 202 | |
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| 203 | return z |
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| 204 | |
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| 205 | |
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| 206 | domain.set_quantity('elevation', topography) |
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| 207 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 208 | domain.set_quantity('stage', |
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| 209 | expression='elevation') # Dry initial condition |
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| 210 | |
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| 211 | |
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| 212 | filename = os.path.join(path, 'example_rating_curve.csv') |
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| 213 | culvert = Culvert_flow(domain, |
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| 214 | culvert_description_filename=filename, |
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| 215 | end_point0=[9.0, 2.5], |
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| 216 | end_point1=[13.0, 2.5], |
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| 217 | verbose=False) |
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| 218 | |
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| 219 | domain.forcing_terms.append(culvert) |
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| 220 | |
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| 221 | |
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| 222 | #----------------------------------------------------------------------- |
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| 223 | # Setup boundary conditions |
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| 224 | #----------------------------------------------------------------------- |
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| 225 | |
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| 226 | # Inflow based on Flow Depth and Approaching Momentum |
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| 227 | |
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| 228 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 229 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
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| 230 | |
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| 231 | |
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| 232 | #----------------------------------------------------------------------- |
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| 233 | # Evolve system through time |
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| 234 | #----------------------------------------------------------------------- |
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| 235 | |
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| 236 | ref_volume = domain.get_quantity('stage').get_integral() |
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| 237 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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| 238 | #print domain.timestepping_statistics() |
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| 239 | new_volume = domain.get_quantity('stage').get_integral() |
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| 240 | |
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| 241 | msg = 'Total volume has changed' |
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| 242 | assert num.allclose(new_volume, ref_volume), msg |
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| 243 | pass |
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| 244 | |
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| 245 | |
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| 246 | |
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| 247 | def test_that_culvert_rating_limits_flow_in_shallow_inlet_condition(self): |
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| 248 | """test_that_culvert_rating_limits_flow_in_shallow_inlet_condition |
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| 249 | |
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| 250 | Test that culvert on a sloping dry bed limits flows when very little water |
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| 251 | is present at inlet |
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| 252 | |
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| 253 | This one is using the rating curve variant |
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| 254 | """ |
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| 255 | |
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| 256 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 257 | |
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| 258 | length = 40. |
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| 259 | width = 5. |
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| 260 | |
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| 261 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 262 | |
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| 263 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 264 | int(width/dy), |
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| 265 | len1=length, |
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| 266 | len2=width) |
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| 267 | domain = Domain(points, vertices, boundary) |
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| 268 | domain.set_name('Test_culvert_shallow') # Output name |
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| 269 | domain.set_default_order(2) |
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| 270 | |
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| 271 | |
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| 272 | #---------------------------------------------------------------------- |
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| 273 | # Setup initial conditions |
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| 274 | #---------------------------------------------------------------------- |
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| 275 | |
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| 276 | def topography(x, y): |
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| 277 | """Set up a weir |
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| 278 | |
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| 279 | A culvert will connect either side |
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| 280 | """ |
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| 281 | # General Slope of Topography |
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| 282 | z=-x/1000 |
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| 283 | |
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| 284 | N = len(x) |
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| 285 | for i in range(N): |
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| 286 | |
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| 287 | # Sloping Embankment Across Channel |
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| 288 | if 5.0 < x[i] < 10.1: |
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| 289 | # Cut Out Segment for Culvert face |
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| 290 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 291 | z[i]=z[i] |
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| 292 | else: |
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| 293 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 294 | if 10.0 < x[i] < 12.1: |
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| 295 | z[i] += 2.5 # Flat Crest of Embankment |
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| 296 | if 12.0 < x[i] < 14.5: |
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| 297 | # Cut Out Segment for Culvert face |
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| 298 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 299 | z[i]=z[i] |
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| 300 | else: |
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| 301 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 302 | |
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| 303 | |
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| 304 | return z |
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| 305 | |
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| 306 | |
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| 307 | domain.set_quantity('elevation', topography) |
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| 308 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 309 | domain.set_quantity('stage', |
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| 310 | expression='elevation + 0.1') # Shallow initial condition |
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| 311 | |
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| 312 | |
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| 313 | filename = os.path.join(path, 'example_rating_curve.csv') |
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| 314 | culvert = Culvert_flow(domain, |
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| 315 | culvert_description_filename=filename, |
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| 316 | end_point0=[9.0, 2.5], |
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| 317 | end_point1=[13.0, 2.5], |
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| 318 | trigger_depth=0.01, |
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| 319 | verbose=False) |
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| 320 | |
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| 321 | domain.forcing_terms.append(culvert) |
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| 322 | |
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| 323 | |
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| 324 | #----------------------------------------------------------------------- |
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| 325 | # Setup boundary conditions |
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| 326 | #----------------------------------------------------------------------- |
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| 327 | |
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| 328 | # Inflow based on Flow Depth and Approaching Momentum |
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| 329 | |
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| 330 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 331 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
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| 332 | |
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| 333 | |
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| 334 | |
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| 335 | #----------------------------------------------------------------------- |
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| 336 | # Evolve system through time |
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| 337 | #----------------------------------------------------------------------- |
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| 338 | |
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| 339 | ref_volume = domain.get_quantity('stage').get_integral() |
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| 340 | for t in domain.evolve(yieldstep = 0.1, finaltime = 25): |
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| 341 | #print domain.timestepping_statistics() |
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| 342 | new_volume = domain.get_quantity('stage').get_integral() |
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| 343 | |
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| 344 | msg = 'Total volume has changed: Is %.2f m^3 should have been %.2f m^3'\ |
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| 345 | % (new_volume, ref_volume) |
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| 346 | if not num.allclose(new_volume, ref_volume): |
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| 347 | print msg |
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| 348 | assert num.allclose(new_volume, ref_volume), msg |
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| 349 | |
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| 350 | |
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| 351 | |
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| 352 | # Now try this for a range of other depths |
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| 353 | for depth in [1.0, 0.5, 0.2, 0.1, 0.05]: |
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| 354 | domain.set_time(0.0) |
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| 355 | |
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| 356 | domain.set_quantity('stage', |
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| 357 | expression='elevation + %f' % depth) |
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| 358 | |
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| 359 | |
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| 360 | ref_volume = domain.get_quantity('stage').get_integral() |
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| 361 | for t in domain.evolve(yieldstep = 0.1, finaltime = 25): |
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| 362 | #print domain.timestepping_statistics() |
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| 363 | new_volume = domain.get_quantity('stage').get_integral() |
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| 364 | |
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| 365 | #print new_volume, ref_volume, new_volume-ref_volume |
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| 366 | msg = 'Total volume has changed: Is %.2f m^3 should have been %.2f m^3'\ |
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| 367 | % (new_volume, ref_volume) |
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| 368 | |
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| 369 | assert num.allclose(new_volume, ref_volume), msg |
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| 370 | |
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| 371 | |
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| 372 | |
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| 373 | def test_that_culvert_dry_bed_boyd_does_not_produce_flow(self): |
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| 374 | """test_that_culvert_in_dry_bed_boyd_does_not_produce_flow(self): |
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| 375 | |
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| 376 | Test that culvert on a sloping dry bed doesn't produce flows |
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| 377 | although there will be a 'pressure' head due to delta_w > 0 |
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| 378 | |
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| 379 | This one is using the 'Boyd' variant |
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| 380 | """ |
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| 381 | |
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| 382 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 383 | |
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| 384 | length = 40. |
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| 385 | width = 5. |
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| 386 | |
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| 387 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 388 | |
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| 389 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 390 | int(width/dy), |
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| 391 | len1=length, |
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| 392 | len2=width) |
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| 393 | domain = Domain(points, vertices, boundary) |
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| 394 | domain.set_name('Test_culvert_dry') # Output name |
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| 395 | domain.set_default_order(2) |
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| 396 | |
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| 397 | |
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| 398 | #---------------------------------------------------------------------- |
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| 399 | # Setup initial conditions |
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| 400 | #---------------------------------------------------------------------- |
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| 401 | |
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| 402 | def topography(x, y): |
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| 403 | """Set up a weir |
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| 404 | |
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| 405 | A culvert will connect either side |
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| 406 | """ |
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| 407 | # General Slope of Topography |
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| 408 | z=-x/1000 |
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| 409 | |
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| 410 | N = len(x) |
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| 411 | for i in range(N): |
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| 412 | |
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| 413 | # Sloping Embankment Across Channel |
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| 414 | if 5.0 < x[i] < 10.1: |
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| 415 | # Cut Out Segment for Culvert face |
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| 416 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 417 | z[i]=z[i] |
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| 418 | else: |
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| 419 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 420 | if 10.0 < x[i] < 12.1: |
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| 421 | z[i] += 2.5 # Flat Crest of Embankment |
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| 422 | if 12.0 < x[i] < 14.5: |
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| 423 | # Cut Out Segment for Culvert face |
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| 424 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 425 | z[i]=z[i] |
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| 426 | else: |
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| 427 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 428 | |
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| 429 | |
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| 430 | return z |
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| 431 | |
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| 432 | |
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| 433 | domain.set_quantity('elevation', topography) |
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| 434 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 435 | domain.set_quantity('stage', |
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| 436 | expression='elevation') # Dry initial condition |
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| 437 | |
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| 438 | |
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| 439 | filename = os.path.join(path, 'example_rating_curve.csv') |
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| 440 | |
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| 441 | |
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| 442 | culvert = Culvert_flow(domain, |
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| 443 | label='Culvert No. 1', |
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| 444 | description='This culvert is a test unit 1.2m Wide by 0.75m High', |
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| 445 | end_point0=[9.0, 2.5], |
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| 446 | end_point1=[13.0, 2.5], |
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| 447 | width=1.20,height=0.75, |
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| 448 | culvert_routine=boyd_generalised_culvert_model, |
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| 449 | number_of_barrels=1, |
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| 450 | update_interval=2, |
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| 451 | verbose=True) |
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| 452 | |
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| 453 | domain.forcing_terms.append(culvert) |
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| 454 | |
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| 455 | |
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| 456 | #----------------------------------------------------------------------- |
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| 457 | # Setup boundary conditions |
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| 458 | #----------------------------------------------------------------------- |
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| 459 | |
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| 460 | # Inflow based on Flow Depth and Approaching Momentum |
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| 461 | |
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| 462 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 463 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
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| 464 | |
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| 465 | |
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| 466 | #----------------------------------------------------------------------- |
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| 467 | # Evolve system through time |
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| 468 | #----------------------------------------------------------------------- |
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| 469 | |
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| 470 | ref_volume = domain.get_quantity('stage').get_integral() |
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| 471 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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| 472 | |
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| 473 | #print domain.timestepping_statistics() |
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| 474 | new_volume = domain.get_quantity('stage').get_integral() |
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| 475 | |
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| 476 | msg = 'Total volume has changed' |
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| 477 | assert num.allclose(new_volume, ref_volume), msg |
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| 478 | pass |
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| 479 | |
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| 480 | |
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| 481 | |
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| 482 | |
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| 483 | |
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| 484 | def test_predicted_boyd_flow(self): |
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| 485 | """test_predicted_boyd_flow |
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| 486 | |
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| 487 | Test that flows predicted by the boyd method are consistent with what what |
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| 488 | is calculated in engineering codes. |
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| 489 | The data was supplied by Petar Milevski |
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| 490 | """ |
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| 491 | |
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| 492 | # FIXME(Ole) this is nowhere near finished |
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| 493 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 494 | |
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| 495 | length = 12. |
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| 496 | width = 5. |
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| 497 | |
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| 498 | dx = dy = 0.5 # Resolution: Length of subdivisions on both axes |
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| 499 | |
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| 500 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 501 | int(width/dy), |
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| 502 | len1=length, |
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| 503 | len2=width) |
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| 504 | domain = Domain(points, vertices, boundary) |
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| 505 | |
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| 506 | domain.set_name('test_culvert') # Output name |
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| 507 | domain.set_default_order(2) |
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| 508 | |
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| 509 | |
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| 510 | #---------------------------------------------------------------------- |
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| 511 | # Setup initial conditions |
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| 512 | #---------------------------------------------------------------------- |
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| 513 | |
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| 514 | def topography(x, y): |
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| 515 | # General Slope of Topography |
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| 516 | z=-x/10 |
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| 517 | |
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| 518 | return z |
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| 519 | |
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| 520 | |
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| 521 | domain.set_quantity('elevation', topography) |
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| 522 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 523 | domain.set_quantity('stage', expression='elevation') |
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| 524 | |
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| 525 | |
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| 526 | Q0 = domain.get_quantity('stage') |
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| 527 | Q1 = Quantity(domain) |
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| 528 | |
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| 529 | # Add depths to stage |
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| 530 | head_water_depth = 0.169 |
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| 531 | tail_water_depth = 0.089 |
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| 532 | |
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| 533 | inlet_poly = [[0,0], [6,0], [6,5], [0,5]] |
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| 534 | outlet_poly = [[6,0], [12,0], [12,5], [6,5]] |
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| 535 | |
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| 536 | Q1.set_values(Polygon_function([(inlet_poly, head_water_depth), |
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| 537 | (outlet_poly, tail_water_depth)])) |
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| 538 | |
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| 539 | domain.set_quantity('stage', Q0 + Q1) |
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| 540 | |
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| 541 | |
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| 542 | |
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| 543 | culvert = Culvert_flow(domain, |
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| 544 | label='Test culvert', |
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| 545 | description='4 m test culvert', |
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| 546 | end_point0=[4.0, 2.5], |
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| 547 | end_point1=[8.0, 2.5], |
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| 548 | width=1.20, |
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| 549 | height=0.75, |
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| 550 | culvert_routine=boyd_generalised_culvert_model, |
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| 551 | number_of_barrels=1, |
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| 552 | verbose=True) |
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| 553 | |
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| 554 | |
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| 555 | domain.forcing_terms.append(culvert) |
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| 556 | |
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| 557 | # Call |
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| 558 | culvert(domain) |
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| 559 | |
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| 560 | #print 'Inlet flow', culvert.inlet.rate |
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| 561 | #print 'Outlet flow', culvert.outlet.rate |
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| 562 | |
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| 563 | |
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| 564 | |
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| 565 | #------------------------------------------------------------- |
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| 566 | if __name__ == "__main__": |
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| 567 | suite = unittest.makeSuite(Test_Culvert, 'test') |
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| 568 | runner = unittest.TextTestRunner() #verbosity=2) |
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| 569 | runner.run(suite) |
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| 570 | |
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