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 | # Helper functions |
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27 | def run_culvert_flow_problem(depth): |
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28 | """Run flow with culvert given depth |
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29 | """ |
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30 | |
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31 | length = 40. |
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32 | width = 5. |
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33 | |
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34 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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35 | |
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36 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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37 | int(width/dy), |
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38 | len1=length, |
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39 | len2=width) |
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40 | domain = Domain(points, vertices, boundary) |
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41 | domain.set_name('Test_culvert_shallow') # Output name |
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42 | domain.set_default_order(2) |
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43 | |
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44 | |
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45 | #---------------------------------------------------------------------- |
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46 | # Setup initial conditions |
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47 | #---------------------------------------------------------------------- |
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48 | |
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49 | def topography(x, y): |
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50 | """Set up a weir |
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51 | |
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52 | A culvert will connect either side |
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53 | """ |
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54 | # General Slope of Topography |
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55 | z=-x/1000 |
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56 | |
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57 | N = len(x) |
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58 | for i in range(N): |
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59 | |
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60 | # Sloping Embankment Across Channel |
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61 | if 5.0 < x[i] < 10.1: |
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62 | # Cut Out Segment for Culvert face |
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63 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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64 | z[i]=z[i] |
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65 | else: |
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66 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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67 | if 10.0 < x[i] < 12.1: |
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68 | z[i] += 2.5 # Flat Crest of Embankment |
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69 | if 12.0 < x[i] < 14.5: |
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70 | # Cut Out Segment for Culvert face |
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71 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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72 | z[i]=z[i] |
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73 | else: |
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74 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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75 | |
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76 | |
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77 | return z |
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78 | |
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79 | |
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80 | domain.set_quantity('elevation', topography) |
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81 | domain.set_quantity('friction', 0.01) # Constant friction |
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82 | domain.set_quantity('stage', |
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83 | expression='elevation + %f' % depth) # Shallow initial condition |
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84 | |
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85 | # Boyd culvert |
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86 | culvert = Culvert_flow(domain, |
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87 | label='Culvert No. 1', |
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88 | description='This culvert is a test unit 1.2m Wide by 0.75m High', |
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89 | end_point0=[9.0, 2.5], |
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90 | end_point1=[13.0, 2.5], |
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91 | width=1.20, height=0.75, |
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92 | culvert_routine=boyd_generalised_culvert_model, |
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93 | number_of_barrels=1, |
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94 | update_interval=2, |
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95 | verbose=False) |
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96 | |
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97 | |
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98 | domain.forcing_terms.append(culvert) |
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99 | |
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100 | |
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101 | #----------------------------------------------------------------------- |
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102 | # Setup boundary conditions |
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103 | #----------------------------------------------------------------------- |
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104 | |
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105 | # Inflow based on Flow Depth and Approaching Momentum |
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106 | |
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107 | Br = Reflective_boundary(domain) # Solid reflective wall |
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108 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
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109 | |
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110 | |
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111 | |
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112 | #----------------------------------------------------------------------- |
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113 | # Evolve system through time |
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114 | #----------------------------------------------------------------------- |
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115 | |
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116 | #print 'depth', depth |
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117 | ref_volume = domain.get_quantity('stage').get_integral() |
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118 | for t in domain.evolve(yieldstep = 0.1, finaltime = 25): |
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119 | new_volume = domain.get_quantity('stage').get_integral() |
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120 | |
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121 | msg = ('Total volume has changed: Is %.8f m^3 should have been %.8f m^3' |
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122 | % (new_volume, ref_volume)) |
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123 | assert num.allclose(new_volume, ref_volume), msg |
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124 | |
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125 | |
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126 | |
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127 | class Test_Culvert(unittest.TestCase): |
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128 | def setUp(self): |
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129 | pass |
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130 | |
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131 | def tearDown(self): |
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132 | pass |
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133 | |
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134 | |
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135 | def test_that_culvert_runs_rating(self): |
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136 | """test_that_culvert_runs_rating |
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137 | |
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138 | This test exercises the culvert and checks values outside rating curve |
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139 | are dealt with |
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140 | """ |
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141 | |
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142 | path = get_pathname_from_package('anuga.culvert_flows') |
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143 | |
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144 | length = 40. |
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145 | width = 5. |
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146 | |
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147 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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148 | |
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149 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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150 | int(width/dy), |
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151 | len1=length, |
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152 | len2=width) |
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153 | domain = Domain(points, vertices, boundary) |
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154 | domain.set_name('Test_culvert') # Output name |
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155 | domain.set_default_order(2) |
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156 | |
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157 | |
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158 | #---------------------------------------------------------------------- |
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159 | # Setup initial conditions |
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160 | #---------------------------------------------------------------------- |
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161 | |
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162 | def topography(x, y): |
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163 | """Set up a weir |
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164 | |
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165 | A culvert will connect either side |
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166 | """ |
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167 | # General Slope of Topography |
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168 | z=-x/1000 |
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169 | |
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170 | N = len(x) |
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171 | for i in range(N): |
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172 | |
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173 | # Sloping Embankment Across Channel |
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174 | if 5.0 < x[i] < 10.1: |
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175 | # Cut Out Segment for Culvert face |
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176 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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177 | z[i]=z[i] |
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178 | else: |
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179 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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180 | if 10.0 < x[i] < 12.1: |
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181 | z[i] += 2.5 # Flat Crest of Embankment |
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182 | if 12.0 < x[i] < 14.5: |
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183 | # Cut Out Segment for Culvert face |
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184 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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185 | z[i]=z[i] |
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186 | else: |
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187 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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188 | |
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189 | |
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190 | return z |
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191 | |
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192 | |
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193 | domain.set_quantity('elevation', topography) |
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194 | domain.set_quantity('friction', 0.01) # Constant friction |
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195 | domain.set_quantity('stage', |
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196 | expression='elevation') # Dry initial condition |
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197 | |
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198 | filename=os.path.join(path, 'example_rating_curve.csv') |
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199 | culvert = Culvert_flow(domain, |
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200 | culvert_description_filename=filename, |
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201 | end_point0=[9.0, 2.5], |
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202 | end_point1=[13.0, 2.5], |
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203 | width=1.00, |
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204 | use_velocity_head=True, |
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205 | verbose=False) |
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206 | |
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207 | domain.forcing_terms.append(culvert) |
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208 | |
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209 | |
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210 | #----------------------------------------------------------------------- |
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211 | # Setup boundary conditions |
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212 | #----------------------------------------------------------------------- |
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213 | |
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214 | # Inflow based on Flow Depth and Approaching Momentum |
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215 | Bi = Dirichlet_boundary([0.0, 0.0, 0.0]) |
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216 | Br = Reflective_boundary(domain) # Solid reflective wall |
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217 | Bo = Dirichlet_boundary([-5, 0, 0]) # Outflow |
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218 | |
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219 | # Upstream and downstream conditions that will exceed the rating curve |
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220 | # I.e produce delta_h outside the range [0, 10] specified in the the |
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221 | # file example_rating_curve.csv |
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222 | Btus = Time_boundary(domain, lambda t: [100*num.sin(2*pi*(t-4)/10), 0.0, 0.0]) |
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223 | Btds = Time_boundary(domain, lambda t: [-5*(num.cos(2*pi*(t-4)/20)), 0.0, 0.0]) |
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224 | domain.set_boundary({'left': Btus, 'right': Btds, 'top': Br, 'bottom': Br}) |
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225 | |
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226 | |
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227 | #----------------------------------------------------------------------- |
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228 | # Evolve system through time |
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229 | #----------------------------------------------------------------------- |
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230 | |
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231 | min_delta_w = sys.maxint |
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232 | max_delta_w = -min_delta_w |
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233 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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234 | delta_w = culvert.inlet.stage - culvert.outlet.stage |
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235 | |
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236 | if delta_w > max_delta_w: max_delta_w = delta_w |
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237 | if delta_w < min_delta_w: min_delta_w = delta_w |
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238 | |
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239 | pass |
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240 | |
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241 | # Check that extreme values in rating curve have been exceeded |
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242 | # so that we know that condition has been exercised |
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243 | assert min_delta_w < 0 |
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244 | assert max_delta_w > 10 |
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245 | |
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246 | |
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247 | def test_that_culvert_dry_bed_rating_does_not_produce_flow(self): |
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248 | """test_that_culvert_in_dry_bed_does_not_produce_flow(self): |
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249 | |
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250 | Test that culvert on a sloping dry bed doesn't produce flows |
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251 | although there will be a 'pressure' head due to delta_w > 0 |
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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_dry') # 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') # Dry 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 | height=0.75, |
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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 | # Evolve system through time |
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336 | #----------------------------------------------------------------------- |
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337 | |
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338 | ref_volume = domain.get_quantity('stage').get_integral() |
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339 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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340 | new_volume = domain.get_quantity('stage').get_integral() |
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341 | |
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342 | msg = 'Total volume has changed' |
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343 | assert num.allclose(new_volume, ref_volume, rtol=1.0e-10), msg |
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344 | pass |
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345 | |
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346 | |
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347 | |
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348 | |
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349 | |
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350 | def test_that_culvert_flows_conserves_volume(self): |
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351 | """test_that_culvert_flows_conserves_volume |
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352 | |
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353 | Test that culvert on a sloping dry bed limits flows when very little water |
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354 | is present at inlet. |
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355 | |
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356 | Uses helper function: run_culvert_flow_problem(depth): |
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357 | |
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358 | """ |
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359 | |
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360 | # Try this for a range of depths |
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361 | for depth in [0.1, 0.2, 0.5, 1.0]: |
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362 | run_culvert_flow_problem(depth) |
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363 | |
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364 | |
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365 | def OBSOLETE_XXXtest_that_culvert_rating_limits_flow_in_shallow_inlet_condition(self): |
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366 | """test_that_culvert_rating_limits_flow_in_shallow_inlet_condition |
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367 | |
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368 | Test that culvert on a sloping dry bed limits flows when very little water |
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369 | is present at inlet |
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370 | |
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371 | This one is using the rating curve variant |
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372 | """ |
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373 | |
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374 | |
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375 | |
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376 | path = get_pathname_from_package('anuga.culvert_flows') |
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377 | |
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378 | length = 40. |
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379 | width = 5. |
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380 | |
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381 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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382 | |
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383 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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384 | int(width/dy), |
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385 | len1=length, |
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386 | len2=width) |
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387 | domain = Domain(points, vertices, boundary) |
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388 | domain.set_name('Test_culvert_shallow') # Output name |
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389 | domain.set_default_order(2) |
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390 | |
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391 | |
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392 | #---------------------------------------------------------------------- |
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393 | # Setup initial conditions |
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394 | #---------------------------------------------------------------------- |
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395 | |
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396 | def topography(x, y): |
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397 | """Set up a weir |
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398 | |
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399 | A culvert will connect either side |
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400 | """ |
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401 | # General Slope of Topography |
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402 | z=-x/1000 |
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403 | |
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404 | N = len(x) |
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405 | for i in range(N): |
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406 | |
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407 | # Sloping Embankment Across Channel |
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408 | if 5.0 < x[i] < 10.1: |
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409 | # Cut Out Segment for Culvert face |
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410 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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411 | z[i]=z[i] |
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412 | else: |
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413 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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414 | if 10.0 < x[i] < 12.1: |
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415 | z[i] += 2.5 # Flat Crest of Embankment |
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416 | if 12.0 < x[i] < 14.5: |
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417 | # Cut Out Segment for Culvert face |
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418 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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419 | z[i]=z[i] |
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420 | else: |
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421 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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422 | |
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423 | |
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424 | return z |
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425 | |
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426 | |
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427 | domain.set_quantity('elevation', topography) |
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428 | domain.set_quantity('friction', 0.01) # Constant friction |
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429 | domain.set_quantity('stage', |
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430 | expression='elevation + 0.1') # Shallow initial condition |
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431 | |
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432 | # Boyd culvert |
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433 | culvert = Culvert_flow(domain, |
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434 | label='Culvert No. 1', |
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435 | description='This culvert is a test unit 1.2m Wide by 0.75m High', |
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436 | end_point0=[9.0, 2.5], |
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437 | end_point1=[13.0, 2.5], |
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438 | width=1.20, height=0.75, |
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439 | culvert_routine=boyd_generalised_culvert_model, |
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440 | number_of_barrels=1, |
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441 | update_interval=2, |
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442 | verbose=False) |
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443 | |
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444 | # Rating curve |
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445 | #filename = os.path.join(path, 'example_rating_curve.csv') |
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446 | #culvert = Culvert_flow(domain, |
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447 | # culvert_description_filename=filename, |
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448 | # end_point0=[9.0, 2.5], |
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449 | # end_point1=[13.0, 2.5], |
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450 | # trigger_depth=0.01, |
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451 | # verbose=False) |
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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 | #----------------------------------------------------------------------- |
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468 | # Evolve system through time |
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469 | #----------------------------------------------------------------------- |
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470 | |
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471 | print 'depth', 0.1 |
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472 | ref_volume = domain.get_quantity('stage').get_integral() |
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473 | for t in domain.evolve(yieldstep = 0.1, finaltime = 25): |
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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: Is %.8f m^3 should have been %.8f m^3' |
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477 | % (new_volume, ref_volume)) |
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478 | assert num.allclose(new_volume, ref_volume, rtol=1.0e-10), msg |
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479 | |
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480 | |
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481 | return |
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482 | # Now try this again for a depth of 10 cm and for a range of other depths |
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483 | for depth in [0.1, 0.2, 0.5, 1.0]: |
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484 | print 'depth', depth |
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485 | domain.set_time(0.0) |
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486 | |
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487 | domain.set_quantity('elevation', topography) |
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488 | domain.set_quantity('friction', 0.01) # Constant friction |
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489 | domain.set_quantity('stage', |
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490 | expression='elevation + %f' % depth) |
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491 | |
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492 | |
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493 | ref_volume = domain.get_quantity('stage').get_integral() |
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494 | for t in domain.evolve(yieldstep = 0.1, finaltime = 25): |
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495 | new_volume = domain.get_quantity('stage').get_integral() |
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496 | |
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497 | msg = 'Total volume has changed: Is %.8f m^3 should have been %.8f m^3'\ |
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498 | % (new_volume, ref_volume) |
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499 | |
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500 | assert num.allclose(new_volume, ref_volume, rtol=1.0e-10), msg |
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501 | |
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502 | |
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503 | |
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504 | def test_that_culvert_dry_bed_boyd_does_not_produce_flow(self): |
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505 | """test_that_culvert_in_dry_bed_boyd_does_not_produce_flow(self): |
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506 | |
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507 | Test that culvert on a sloping dry bed doesn't produce flows |
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508 | although there will be a 'pressure' head due to delta_w > 0 |
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509 | |
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510 | This one is using the 'Boyd' variant |
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511 | """ |
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512 | |
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513 | path = get_pathname_from_package('anuga.culvert_flows') |
---|
514 | |
---|
515 | length = 40. |
---|
516 | width = 5. |
---|
517 | |
---|
518 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
---|
519 | |
---|
520 | points, vertices, boundary = rectangular_cross(int(length/dx), |
---|
521 | int(width/dy), |
---|
522 | len1=length, |
---|
523 | len2=width) |
---|
524 | domain = Domain(points, vertices, boundary) |
---|
525 | domain.set_name('Test_culvert_dry') # Output name |
---|
526 | domain.set_default_order(2) |
---|
527 | |
---|
528 | |
---|
529 | #---------------------------------------------------------------------- |
---|
530 | # Setup initial conditions |
---|
531 | #---------------------------------------------------------------------- |
---|
532 | |
---|
533 | def topography(x, y): |
---|
534 | """Set up a weir |
---|
535 | |
---|
536 | A culvert will connect either side |
---|
537 | """ |
---|
538 | # General Slope of Topography |
---|
539 | z=-x/1000 |
---|
540 | |
---|
541 | N = len(x) |
---|
542 | for i in range(N): |
---|
543 | |
---|
544 | # Sloping Embankment Across Channel |
---|
545 | if 5.0 < x[i] < 10.1: |
---|
546 | # Cut Out Segment for Culvert face |
---|
547 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
---|
548 | z[i]=z[i] |
---|
549 | else: |
---|
550 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
---|
551 | if 10.0 < x[i] < 12.1: |
---|
552 | z[i] += 2.5 # Flat Crest of Embankment |
---|
553 | if 12.0 < x[i] < 14.5: |
---|
554 | # Cut Out Segment for Culvert face |
---|
555 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
---|
556 | z[i]=z[i] |
---|
557 | else: |
---|
558 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
---|
559 | |
---|
560 | |
---|
561 | return z |
---|
562 | |
---|
563 | |
---|
564 | domain.set_quantity('elevation', topography) |
---|
565 | domain.set_quantity('friction', 0.01) # Constant friction |
---|
566 | domain.set_quantity('stage', |
---|
567 | expression='elevation') # Dry initial condition |
---|
568 | |
---|
569 | |
---|
570 | filename = os.path.join(path, 'example_rating_curve.csv') |
---|
571 | |
---|
572 | |
---|
573 | culvert = Culvert_flow(domain, |
---|
574 | label='Culvert No. 1', |
---|
575 | description='This culvert is a test unit 1.2m Wide by 0.75m High', |
---|
576 | end_point0=[9.0, 2.5], |
---|
577 | end_point1=[13.0, 2.5], |
---|
578 | width=1.20, height=0.75, |
---|
579 | culvert_routine=boyd_generalised_culvert_model, |
---|
580 | number_of_barrels=1, |
---|
581 | update_interval=2, |
---|
582 | verbose=False) |
---|
583 | |
---|
584 | domain.forcing_terms.append(culvert) |
---|
585 | |
---|
586 | |
---|
587 | #----------------------------------------------------------------------- |
---|
588 | # Setup boundary conditions |
---|
589 | #----------------------------------------------------------------------- |
---|
590 | |
---|
591 | # Inflow based on Flow Depth and Approaching Momentum |
---|
592 | |
---|
593 | Br = Reflective_boundary(domain) # Solid reflective wall |
---|
594 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
---|
595 | |
---|
596 | |
---|
597 | #----------------------------------------------------------------------- |
---|
598 | # Evolve system through time |
---|
599 | #----------------------------------------------------------------------- |
---|
600 | |
---|
601 | ref_volume = domain.get_quantity('stage').get_integral() |
---|
602 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
---|
603 | |
---|
604 | new_volume = domain.get_quantity('stage').get_integral() |
---|
605 | |
---|
606 | msg = 'Total volume has changed' |
---|
607 | assert num.allclose(new_volume, ref_volume, rtol=1.0e-10), msg |
---|
608 | pass |
---|
609 | |
---|
610 | |
---|
611 | |
---|
612 | |
---|
613 | |
---|
614 | def test_predicted_boyd_flow(self): |
---|
615 | """test_predicted_boyd_flow |
---|
616 | |
---|
617 | Test that flows predicted by the boyd method are consistent with what what |
---|
618 | is calculated in engineering codes. |
---|
619 | The data was supplied by Petar Milevski |
---|
620 | """ |
---|
621 | |
---|
622 | # FIXME(Ole) this is nowhere near finished |
---|
623 | path = get_pathname_from_package('anuga.culvert_flows') |
---|
624 | |
---|
625 | length = 12. |
---|
626 | width = 5. |
---|
627 | |
---|
628 | dx = dy = 0.5 # Resolution: Length of subdivisions on both axes |
---|
629 | |
---|
630 | points, vertices, boundary = rectangular_cross(int(length/dx), |
---|
631 | int(width/dy), |
---|
632 | len1=length, |
---|
633 | len2=width) |
---|
634 | domain = Domain(points, vertices, boundary) |
---|
635 | |
---|
636 | domain.set_name('test_culvert') # Output name |
---|
637 | domain.set_default_order(2) |
---|
638 | |
---|
639 | |
---|
640 | #---------------------------------------------------------------------- |
---|
641 | # Setup initial conditions |
---|
642 | #---------------------------------------------------------------------- |
---|
643 | |
---|
644 | def topography(x, y): |
---|
645 | # General Slope of Topography |
---|
646 | z=-x/10 |
---|
647 | |
---|
648 | return z |
---|
649 | |
---|
650 | |
---|
651 | domain.set_quantity('elevation', topography) |
---|
652 | domain.set_quantity('friction', 0.01) # Constant friction |
---|
653 | domain.set_quantity('stage', expression='elevation') |
---|
654 | |
---|
655 | |
---|
656 | Q0 = domain.get_quantity('stage') |
---|
657 | Q1 = Quantity(domain) |
---|
658 | |
---|
659 | # Add depths to stage |
---|
660 | head_water_depth = 0.169 |
---|
661 | tail_water_depth = 0.089 |
---|
662 | |
---|
663 | inlet_poly = [[0,0], [6,0], [6,5], [0,5]] |
---|
664 | outlet_poly = [[6,0], [12,0], [12,5], [6,5]] |
---|
665 | |
---|
666 | Q1.set_values(Polygon_function([(inlet_poly, head_water_depth), |
---|
667 | (outlet_poly, tail_water_depth)])) |
---|
668 | |
---|
669 | domain.set_quantity('stage', Q0 + Q1) |
---|
670 | |
---|
671 | |
---|
672 | |
---|
673 | culvert = Culvert_flow(domain, |
---|
674 | label='Test culvert', |
---|
675 | description='4 m test culvert', |
---|
676 | end_point0=[4.0, 2.5], |
---|
677 | end_point1=[8.0, 2.5], |
---|
678 | width=1.20, |
---|
679 | height=0.75, |
---|
680 | culvert_routine=boyd_generalised_culvert_model, |
---|
681 | number_of_barrels=1, |
---|
682 | verbose=False) |
---|
683 | |
---|
684 | |
---|
685 | domain.forcing_terms.append(culvert) |
---|
686 | |
---|
687 | # Call |
---|
688 | culvert(domain) |
---|
689 | |
---|
690 | |
---|
691 | |
---|
692 | |
---|
693 | def test_momentum_jet(self): |
---|
694 | """test_momentum_jet |
---|
695 | |
---|
696 | Test that culvert_class can accept keyword use_momentum_jet |
---|
697 | This does not yet imply that the values have been tested. FIXME |
---|
698 | """ |
---|
699 | |
---|
700 | |
---|
701 | length = 40. |
---|
702 | width = 5. |
---|
703 | |
---|
704 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
---|
705 | |
---|
706 | points, vertices, boundary = rectangular_cross(int(length/dx), |
---|
707 | int(width/dy), |
---|
708 | len1=length, |
---|
709 | len2=width) |
---|
710 | domain = Domain(points, vertices, boundary) |
---|
711 | domain.set_name('Test_culvert_shallow') # Output name |
---|
712 | domain.set_default_order(2) |
---|
713 | |
---|
714 | |
---|
715 | #---------------------------------------------------------------------- |
---|
716 | # Setup initial conditions |
---|
717 | #---------------------------------------------------------------------- |
---|
718 | |
---|
719 | def topography(x, y): |
---|
720 | """Set up a weir |
---|
721 | |
---|
722 | A culvert will connect either side |
---|
723 | """ |
---|
724 | # General Slope of Topography |
---|
725 | z=-x/1000 |
---|
726 | |
---|
727 | N = len(x) |
---|
728 | for i in range(N): |
---|
729 | |
---|
730 | # Sloping Embankment Across Channel |
---|
731 | if 5.0 < x[i] < 10.1: |
---|
732 | # Cut Out Segment for Culvert face |
---|
733 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
---|
734 | z[i]=z[i] |
---|
735 | else: |
---|
736 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
---|
737 | if 10.0 < x[i] < 12.1: |
---|
738 | z[i] += 2.5 # Flat Crest of Embankment |
---|
739 | if 12.0 < x[i] < 14.5: |
---|
740 | # Cut Out Segment for Culvert face |
---|
741 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
---|
742 | z[i]=z[i] |
---|
743 | else: |
---|
744 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
---|
745 | |
---|
746 | |
---|
747 | return z |
---|
748 | |
---|
749 | |
---|
750 | domain.set_quantity('elevation', topography) |
---|
751 | domain.set_quantity('friction', 0.01) # Constant friction |
---|
752 | domain.set_quantity('stage', |
---|
753 | expression='elevation + 1.0') # Shallow initial condition |
---|
754 | |
---|
755 | # Boyd culvert |
---|
756 | culvert = Culvert_flow(domain, |
---|
757 | label='Culvert No. 1', |
---|
758 | description='This culvert is a test unit 1.2m Wide by 0.75m High', |
---|
759 | end_point0=[9.0, 2.5], |
---|
760 | end_point1=[13.0, 2.5], |
---|
761 | width=1.20, height=0.75, |
---|
762 | culvert_routine=boyd_generalised_culvert_model, |
---|
763 | number_of_barrels=1, |
---|
764 | use_momentum_jet=True, |
---|
765 | update_interval=2, |
---|
766 | verbose=False) |
---|
767 | |
---|
768 | |
---|
769 | domain.forcing_terms.append(culvert) |
---|
770 | |
---|
771 | |
---|
772 | # Call |
---|
773 | culvert(domain) |
---|
774 | |
---|
775 | |
---|
776 | #----------------------------------------------------------------------- |
---|
777 | # Setup boundary conditions |
---|
778 | #----------------------------------------------------------------------- |
---|
779 | |
---|
780 | |
---|
781 | Br = Reflective_boundary(domain) # Solid reflective wall |
---|
782 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
---|
783 | |
---|
784 | #----------------------------------------------------------------------- |
---|
785 | # Evolve system through time |
---|
786 | #----------------------------------------------------------------------- |
---|
787 | |
---|
788 | ref_volume = domain.get_quantity('stage').get_integral() |
---|
789 | for t in domain.evolve(yieldstep = 0.1, finaltime = 25): |
---|
790 | new_volume = domain.get_quantity('stage').get_integral() |
---|
791 | |
---|
792 | msg = ('Total volume has changed: Is %.8f m^3 should have been %.8f m^3' |
---|
793 | % (new_volume, ref_volume)) |
---|
794 | assert num.allclose(new_volume, ref_volume), msg |
---|
795 | |
---|
796 | |
---|
797 | |
---|
798 | |
---|
799 | |
---|
800 | #------------------------------------------------------------- |
---|
801 | |
---|
802 | if __name__ == "__main__": |
---|
803 | suite = unittest.makeSuite(Test_Culvert, 'test') |
---|
804 | runner = unittest.TextTestRunner() #verbosity=2) |
---|
805 | runner.run(suite) |
---|
806 | |
---|