1 | #!/usr/bin/env python |
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2 | |
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3 | import unittest, os |
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4 | import os.path |
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5 | from math import pi, sqrt |
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6 | import tempfile |
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7 | |
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8 | from anuga.config import g, epsilon |
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9 | from anuga.config import netcdf_mode_r, netcdf_mode_w, netcdf_mode_a |
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10 | from anuga.utilities.numerical_tools import mean |
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11 | from anuga.utilities.polygon import is_inside_polygon |
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12 | from anuga.coordinate_transforms.geo_reference import Geo_reference |
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13 | from anuga.abstract_2d_finite_volumes.quantity import Quantity |
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14 | from anuga.geospatial_data.geospatial_data import Geospatial_data |
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15 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross |
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16 | |
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17 | from anuga.utilities.system_tools import get_pathname_from_package |
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18 | from swb_domain import * |
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19 | |
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20 | import numpy as num |
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21 | |
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22 | # Get gateway to C implementation of flux function for direct testing |
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23 | from shallow_water_ext import flux_function_central as flux_function |
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24 | |
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25 | |
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26 | |
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27 | |
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28 | class Test_swb_clean(unittest.TestCase): |
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29 | def setUp(self): |
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30 | pass |
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31 | |
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32 | def tearDown(self): |
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33 | pass |
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34 | |
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35 | def test_get_flow_through_cross_section_with_geo(self): |
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36 | """test_get_flow_through_cross_section(self): |
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37 | |
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38 | Test that the total flow through a cross section can be |
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39 | correctly obtained at run-time from the ANUGA domain. |
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40 | |
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41 | This test creates a flat bed with a known flow through it and tests |
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42 | that the function correctly returns the expected flow. |
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43 | |
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44 | The specifics are |
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45 | e = -1 m |
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46 | u = 2 m/s |
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47 | h = 2 m |
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48 | w = 3 m (width of channel) |
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49 | |
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50 | q = u*h*w = 12 m^3/s |
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51 | |
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52 | This run tries it with georeferencing and with elevation = -1 |
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53 | """ |
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54 | |
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55 | import time, os |
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56 | from Scientific.IO.NetCDF import NetCDFFile |
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57 | from mesh_factory import rectangular |
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58 | |
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59 | # Create basic mesh (20m x 3m) |
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60 | width = 3 |
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61 | length = 20 |
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62 | t_end = 1 |
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63 | points, vertices, boundary = rectangular(length, width, length, width) |
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64 | |
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65 | # Create shallow water domain |
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66 | domain = Domain(points, vertices, boundary, |
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67 | geo_reference=Geo_reference(56, 308500, 6189000)) |
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68 | |
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69 | domain.default_order = 2 |
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70 | domain.set_quantities_to_be_stored(None) |
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71 | |
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72 | e = -1.0 |
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73 | w = 1.0 |
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74 | h = w-e |
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75 | u = 2.0 |
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76 | uh = u*h |
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77 | |
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78 | Br = Reflective_boundary(domain) # Side walls |
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79 | Bd = Dirichlet_boundary([w, uh, 0]) # 2 m/s across the 3 m inlet: |
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80 | |
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81 | |
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82 | # Initial conditions |
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83 | domain.set_quantity('elevation', e) |
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84 | domain.set_quantity('stage', w) |
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85 | domain.set_quantity('xmomentum', uh) |
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86 | domain.set_boundary({'left': Bd, 'right': Bd, 'top': Br, 'bottom': Br}) |
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87 | |
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88 | # Interpolation points down the middle |
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89 | I = [[0, width/2.], |
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90 | [length/2., width/2.], |
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91 | [length, width/2.]] |
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92 | interpolation_points = domain.geo_reference.get_absolute(I) |
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93 | |
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94 | # Shortcuts to quantites |
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95 | stage = domain.get_quantity('stage') |
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96 | xmomentum = domain.get_quantity('xmomentum') |
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97 | ymomentum = domain.get_quantity('ymomentum') |
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98 | |
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99 | for t in domain.evolve(yieldstep=0.1, finaltime=t_end): |
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100 | # Check that quantities are they should be in the interior |
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101 | w_t = stage.get_values(interpolation_points) |
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102 | uh_t = xmomentum.get_values(interpolation_points) |
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103 | vh_t = ymomentum.get_values(interpolation_points) |
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104 | |
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105 | assert num.allclose(w_t, w) |
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106 | assert num.allclose(uh_t, uh) |
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107 | assert num.allclose(vh_t, 0.0, atol=1.0e-6) |
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108 | |
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109 | # Check flows through the middle |
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110 | for i in range(5): |
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111 | x = length/2. + i*0.23674563 # Arbitrary |
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112 | cross_section = [[x, 0], [x, width]] |
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113 | |
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114 | cross_section = domain.geo_reference.get_absolute(cross_section) |
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115 | Q = domain.get_flow_through_cross_section(cross_section, |
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116 | verbose=False) |
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117 | |
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118 | assert num.allclose(Q, uh*width) |
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119 | |
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120 | def test_get_energy_through_cross_section_with_geo(self): |
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121 | """test_get_energy_through_cross_section(self): |
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122 | |
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123 | Test that the total and specific energy through a cross section can be |
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124 | correctly obtained at run-time from the ANUGA domain. |
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125 | |
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126 | This test creates a flat bed with a known flow through it and tests |
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127 | that the function correctly returns the expected energies. |
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128 | |
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129 | The specifics are |
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130 | e = -1 m |
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131 | u = 2 m/s |
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132 | h = 2 m |
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133 | w = 3 m (width of channel) |
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134 | |
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135 | q = u*h*w = 12 m^3/s |
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136 | |
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137 | This run tries it with georeferencing and with elevation = -1 |
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138 | """ |
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139 | |
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140 | import time, os |
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141 | from Scientific.IO.NetCDF import NetCDFFile |
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142 | from mesh_factory import rectangular |
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143 | |
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144 | # Create basic mesh (20m x 3m) |
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145 | width = 3 |
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146 | length = 20 |
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147 | t_end = 1 |
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148 | points, vertices, boundary = rectangular(length, width, length, width) |
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149 | |
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150 | # Create shallow water domain |
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151 | domain = Domain(points, vertices, boundary, |
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152 | geo_reference=Geo_reference(56, 308500, 6189000)) |
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153 | |
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154 | domain.default_order = 2 |
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155 | domain.set_quantities_to_be_stored(None) |
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156 | |
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157 | e = -1.0 |
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158 | w = 1.0 |
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159 | h = w-e |
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160 | u = 2.0 |
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161 | uh = u*h |
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162 | |
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163 | Br = Reflective_boundary(domain) # Side walls |
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164 | Bd = Dirichlet_boundary([w, uh, 0]) # 2 m/s across the 3 m inlet: |
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165 | |
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166 | # Initial conditions |
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167 | domain.set_quantity('elevation', e) |
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168 | domain.set_quantity('stage', w) |
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169 | domain.set_quantity('xmomentum', uh) |
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170 | domain.set_boundary({'left': Bd, 'right': Bd, 'top': Br, 'bottom': Br}) |
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171 | |
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172 | # Interpolation points down the middle |
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173 | I = [[0, width/2.], |
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174 | [length/2., width/2.], |
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175 | [length, width/2.]] |
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176 | interpolation_points = domain.geo_reference.get_absolute(I) |
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177 | |
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178 | # Shortcuts to quantites |
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179 | stage = domain.get_quantity('stage') |
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180 | xmomentum = domain.get_quantity('xmomentum') |
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181 | ymomentum = domain.get_quantity('ymomentum') |
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182 | |
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183 | for t in domain.evolve(yieldstep=0.1, finaltime=t_end): |
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184 | # Check that quantities are they should be in the interior |
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185 | w_t = stage.get_values(interpolation_points) |
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186 | uh_t = xmomentum.get_values(interpolation_points) |
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187 | vh_t = ymomentum.get_values(interpolation_points) |
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188 | |
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189 | assert num.allclose(w_t, w) |
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190 | assert num.allclose(uh_t, uh) |
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191 | assert num.allclose(vh_t, 0.0, atol=1.0e-6) |
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192 | |
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193 | # Check energies through the middle |
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194 | for i in range(5): |
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195 | x = length/2. + i*0.23674563 # Arbitrary |
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196 | cross_section = [[x, 0], [x, width]] |
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197 | |
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198 | cross_section = domain.geo_reference.get_absolute(cross_section) |
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199 | Es = domain.get_energy_through_cross_section(cross_section, |
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200 | kind='specific', |
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201 | verbose=False) |
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202 | |
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203 | assert num.allclose(Es, h + 0.5*u*u/g) |
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204 | |
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205 | Et = domain.get_energy_through_cross_section(cross_section, |
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206 | kind='total', |
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207 | verbose=False) |
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208 | assert num.allclose(Et, w + 0.5*u*u/g) |
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209 | |
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210 | |
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211 | def test_cross_section_class(self): |
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212 | """test_cross_section_class(self): |
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213 | |
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214 | Test that the total and specific energy through a cross section can be |
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215 | correctly obtained at run-time from the ANUGA cross section class. |
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216 | |
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217 | This test creates a flat bed with a known flow through it, creates a cross |
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218 | section and tests that the correct flow and energies are calculated |
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219 | |
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220 | The specifics are |
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221 | e = -1 m |
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222 | u = 2 m/s |
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223 | h = 2 m |
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224 | w = 3 m (width of channel) |
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225 | |
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226 | q = u*h*w = 12 m^3/s |
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227 | |
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228 | This run tries it with georeferencing and with elevation = -1 |
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229 | """ |
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230 | |
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231 | import time, os |
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232 | from Scientific.IO.NetCDF import NetCDFFile |
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233 | from mesh_factory import rectangular |
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234 | |
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235 | # Create basic mesh (20m x 3m) |
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236 | width = 3 |
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237 | length = 20 |
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238 | t_end = 1 |
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239 | points, vertices, boundary = rectangular(length, width, length, width) |
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240 | |
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241 | # Create shallow water domain |
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242 | domain = Domain(points, vertices, boundary, |
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243 | geo_reference=Geo_reference(56, 308500, 6189000)) |
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244 | |
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245 | domain.default_order = 2 |
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246 | domain.set_quantities_to_be_stored(None) |
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247 | |
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248 | e = -1.0 |
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249 | w = 1.0 |
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250 | h = w-e |
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251 | u = 2.0 |
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252 | uh = u*h |
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253 | |
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254 | Br = Reflective_boundary(domain) # Side walls |
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255 | Bd = Dirichlet_boundary([w, uh, 0]) # 2 m/s across the 3 m inlet: |
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256 | |
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257 | # Initial conditions |
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258 | domain.set_quantity('elevation', e) |
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259 | domain.set_quantity('stage', w) |
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260 | domain.set_quantity('xmomentum', uh) |
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261 | domain.set_boundary({'left': Bd, 'right': Bd, 'top': Br, 'bottom': Br}) |
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262 | |
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263 | # Interpolation points down the middle |
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264 | I = [[0, width/2.], |
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265 | [length/2., width/2.], |
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266 | [length, width/2.]] |
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267 | interpolation_points = domain.geo_reference.get_absolute(I) |
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268 | |
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269 | # Shortcuts to quantites |
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270 | stage = domain.get_quantity('stage') |
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271 | xmomentum = domain.get_quantity('xmomentum') |
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272 | ymomentum = domain.get_quantity('ymomentum') |
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273 | |
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274 | |
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275 | # Create some cross sections |
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276 | cross_sections = [] |
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277 | for i in range(5): |
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278 | x = length/2. + i*0.23674563 # Arbitrary |
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279 | polyline = [[x, 0], [x, width]] |
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280 | |
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281 | polyline = domain.geo_reference.get_absolute(polyline) |
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282 | |
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283 | cross_sections.append(Cross_section(domain,polyline)) |
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284 | |
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285 | |
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286 | |
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287 | for t in domain.evolve(yieldstep=0.1, finaltime=t_end): |
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288 | # Check that quantities are they should be in the interior |
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289 | w_t = stage.get_values(interpolation_points) |
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290 | uh_t = xmomentum.get_values(interpolation_points) |
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291 | vh_t = ymomentum.get_values(interpolation_points) |
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292 | |
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293 | assert num.allclose(w_t, w) |
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294 | assert num.allclose(uh_t, uh) |
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295 | assert num.allclose(vh_t, 0.0, atol=1.0e-6) |
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296 | |
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297 | |
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298 | # Check flows and energies through the middle |
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299 | for cross_section in cross_sections: |
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300 | |
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301 | Q = cross_section.get_flow_through_cross_section() |
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302 | |
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303 | assert num.allclose(Q, uh*width) |
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304 | |
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305 | Es = cross_section.get_energy_through_cross_section(kind='specific') |
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306 | |
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307 | assert num.allclose(Es, h + 0.5*u*u/g) |
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308 | |
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309 | Et = cross_section.get_energy_through_cross_section(kind='total') |
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310 | |
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311 | assert num.allclose(Et, w + 0.5*u*u/g) |
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312 | |
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313 | |
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314 | |
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315 | ################################################################################# |
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316 | |
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317 | if __name__ == "__main__": |
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318 | suite = unittest.makeSuite(Test_swb_clean, 'test') |
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319 | runner = unittest.TextTestRunner(verbosity=1) |
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320 | runner.run(suite) |
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