1 | #!/usr/bin/env python |
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2 | """ |
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3 | Generic boundary conditions for a domain. |
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4 | |
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5 | A boundary represents the edge of the model, where inflow, outflow, and |
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6 | reflection can take place. |
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7 | |
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8 | The boundaries in this model can be applied universally across all |
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9 | domain models, without being tied to a particular implementation. |
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10 | """ |
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11 | |
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12 | import unittest |
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13 | from math import sqrt, pi |
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14 | |
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15 | from generic_boundary_conditions import * |
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16 | from anuga.abstract_2d_finite_volumes.generic_domain import Generic_Domain |
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17 | from anuga.config import epsilon |
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18 | |
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19 | import numpy as num |
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20 | |
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21 | |
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22 | class Test_Generic_Boundary_Conditions(unittest.TestCase): |
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23 | def setUp(self): |
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24 | pass |
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25 | #print " Setting up" |
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26 | |
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27 | def tearDown(self): |
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28 | pass |
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29 | #print " Tearing down" |
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30 | |
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31 | |
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32 | def test_generic(self): |
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33 | b = Boundary() |
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34 | |
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35 | try: |
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36 | b.evaluate() |
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37 | except: |
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38 | pass |
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39 | else: |
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40 | raise 'Should have raised exception' |
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41 | |
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42 | |
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43 | def test_dirichlet_empty(self): |
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44 | |
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45 | try: |
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46 | Bd = Dirichlet_boundary() |
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47 | except: |
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48 | pass |
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49 | else: |
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50 | raise 'Should have raised exception' |
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51 | |
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52 | def test_dirichlet(self): |
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53 | x = [3.14,0,0.1] |
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54 | Bd = Dirichlet_boundary(x) |
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55 | |
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56 | q = Bd.evaluate() |
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57 | assert num.allclose(q, x) |
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58 | |
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59 | |
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60 | def test_time(self): |
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61 | from quantity import Quantity |
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62 | |
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63 | a = [0.0, 0.0] |
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64 | b = [0.0, 2.0] |
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65 | c = [2.0,0.0] |
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66 | d = [0.0, 4.0] |
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67 | e = [2.0, 2.0] |
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68 | f = [4.0,0.0] |
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69 | |
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70 | points = [a, b, c, d, e, f] |
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71 | |
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72 | #bac, bce, ecf, dbe |
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73 | elements = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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74 | |
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75 | domain = Generic_Domain(points, elements) |
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76 | domain.check_integrity() |
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77 | |
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78 | domain.conserved_quantities = ['stage', 'ymomentum'] |
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79 | domain.evolved_quantities = ['stage', 'ymomentum'] |
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80 | domain.quantities['stage'] =\ |
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81 | Quantity(domain, [[1,2,3], [5,5,5], |
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82 | [0,0,9], [-6, 3, 3]]) |
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83 | |
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84 | domain.quantities['ymomentum'] =\ |
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85 | Quantity(domain, [[2,3,4], [5,5,5], |
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86 | [0,0,9], [-6, 3, 3]]) |
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87 | |
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88 | |
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89 | domain.check_integrity() |
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90 | |
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91 | #Test time bdry, you need to provide a domain and function |
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92 | try: |
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93 | T = Time_boundary(domain) |
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94 | except: |
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95 | pass |
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96 | else: |
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97 | raise 'Should have raised exception' |
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98 | |
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99 | #Test time bdry, you need to provide a function |
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100 | try: |
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101 | T = Time_boundary() |
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102 | except: |
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103 | pass |
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104 | else: |
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105 | raise 'Should have raised exception' |
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106 | |
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107 | |
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108 | def function(t): |
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109 | return [1.0, 0.0] |
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110 | |
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111 | T = Time_boundary(domain, function) |
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112 | |
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113 | from anuga.config import default_boundary_tag |
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114 | domain.set_boundary( {default_boundary_tag: T} ) |
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115 | |
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116 | |
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117 | #FIXME: should not necessarily be true always. |
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118 | #E.g. with None as a boundary object. |
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119 | assert len(domain.boundary) == len(domain.boundary_objects) |
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120 | |
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121 | q = T.evaluate(0, 2) #Vol=0, edge=2 |
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122 | |
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123 | assert num.allclose(q, [1.0, 0.0]) |
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124 | |
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125 | |
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126 | def test_time_space_boundary(self): |
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127 | from quantity import Quantity |
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128 | |
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129 | a = [0.0, 0.0] |
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130 | b = [0.0, 2.0] |
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131 | c = [2.0,0.0] |
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132 | d = [0.0, 4.0] |
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133 | e = [2.0, 2.0] |
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134 | f = [4.0,0.0] |
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135 | |
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136 | points = [a, b, c, d, e, f] |
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137 | |
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138 | #bac, bce, ecf, dbe |
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139 | elements = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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140 | |
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141 | domain = Generic_Domain(points, elements) |
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142 | domain.check_integrity() |
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143 | |
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144 | domain.conserved_quantities = ['stage', 'ymomentum'] |
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145 | domain.evolved_quantities = ['stage', 'ymomentum'] |
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146 | domain.quantities['stage'] =\ |
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147 | Quantity(domain, [[1,2,3], [5,5,5], |
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148 | [0,0,9], [-6, 3, 3]]) |
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149 | |
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150 | domain.quantities['ymomentum'] =\ |
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151 | Quantity(domain, [[2,3,4], [5,5,5], |
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152 | [0,0,9], [-6, 3, 3]]) |
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153 | |
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154 | |
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155 | domain.check_integrity() |
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156 | |
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157 | #Test time space bdry, you need to provide a domain and function |
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158 | try: |
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159 | T = Time_space_boundary(domain) |
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160 | except: |
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161 | pass |
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162 | else: |
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163 | raise 'Should have raised exception' |
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164 | |
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165 | #Test time bdry, you need to provide a function |
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166 | try: |
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167 | T = Time_space_boundary() |
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168 | except: |
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169 | pass |
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170 | else: |
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171 | raise 'Should have raised exception' |
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172 | |
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173 | |
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174 | def function(t,x,y): |
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175 | return [x,y] |
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176 | |
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177 | T = Time_space_boundary(domain, function) |
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178 | |
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179 | from anuga.config import default_boundary_tag |
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180 | domain.set_boundary( {default_boundary_tag: T} ) |
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181 | |
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182 | |
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183 | #FIXME: should not necessarily be true always. |
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184 | #E.g. with None as a boundary object. |
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185 | assert len(domain.boundary) == len(domain.boundary_objects) |
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186 | |
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187 | q = T.evaluate(0, 2) #Vol=0, edge=2 |
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188 | assert num.allclose(q, domain.get_edge_midpoint_coordinate(0,2)) |
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189 | |
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190 | |
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191 | q = T.evaluate(1, 1) #Vol=1, edge=1 |
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192 | assert num.allclose(q, domain.get_edge_midpoint_coordinate(1,1)) |
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193 | |
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194 | |
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195 | |
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196 | |
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197 | |
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198 | def test_transmissive(self): |
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199 | from quantity import Quantity |
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200 | |
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201 | a = [0.0, 0.0] |
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202 | b = [0.0, 2.0] |
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203 | c = [2.0,0.0] |
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204 | d = [0.0, 4.0] |
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205 | e = [2.0, 2.0] |
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206 | f = [4.0,0.0] |
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207 | |
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208 | points = [a, b, c, d, e, f] |
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209 | |
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210 | #bac, bce, ecf, dbe |
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211 | elements = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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212 | |
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213 | domain = Generic_Domain(points, elements) |
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214 | domain.check_integrity() |
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215 | |
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216 | domain.conserved_quantities = ['stage', 'ymomentum'] |
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217 | domain.evolved_quantities = ['stage', 'ymomentum'] |
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218 | domain.quantities['stage'] =\ |
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219 | Quantity(domain, [[1,2,3], [5,5,5], |
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220 | [0,0,9], [-6, 3, 3]]) |
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221 | |
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222 | domain.quantities['ymomentum'] =\ |
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223 | Quantity(domain, [[2,3,4], [5,5,5], |
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224 | [0,0,9], [-6, 3, 3]]) |
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225 | |
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226 | |
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227 | domain.check_integrity() |
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228 | |
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229 | #Test transmissve bdry |
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230 | try: |
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231 | T = Transmissive_boundary() |
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232 | except: |
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233 | pass |
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234 | else: |
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235 | raise 'Should have raised exception' |
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236 | |
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237 | T = Transmissive_boundary(domain) |
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238 | |
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239 | from anuga.config import default_boundary_tag |
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240 | domain.set_boundary( {default_boundary_tag: T} ) |
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241 | |
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242 | |
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243 | #FIXME: should not necessarily be true always. |
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244 | #E.g. with None as a boundary object. |
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245 | assert len(domain.boundary) == len(domain.boundary_objects) |
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246 | |
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247 | q = T.evaluate(0, 2) #Vol=0, edge=2 |
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248 | |
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249 | assert num.allclose(q, [1.5, 2.5]) |
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250 | |
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251 | |
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252 | # Now set the centroid_transmissive_bc flag to true |
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253 | domain.set_centroid_transmissive_bc(True) |
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254 | |
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255 | q = T.evaluate(0, 2) #Vol=0, edge=2 |
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256 | |
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257 | assert num.allclose(q, [2.0 ,3.0]) # centroid value |
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258 | |
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259 | |
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260 | |
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261 | |
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262 | |
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263 | def NOtest_fileboundary_time_only(self): |
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264 | """Test that boundary values can be read from file and interpolated |
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265 | This is using the .tms file format |
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266 | |
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267 | See also test_util for comprenhensive testing of the underlying |
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268 | file_function and also tests in test_datamanager which tests |
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269 | file_function using the sts format |
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270 | """ |
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271 | #FIXME (Ole): This test was disabled 18 August 2008 as no |
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272 | # need for this was found. Rather I implemented an Exception |
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273 | # to catch possible errors in the model setup |
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274 | |
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275 | from quantity import Quantity |
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276 | import time, os |
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277 | from math import sin, pi |
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278 | from anuga.config import time_format |
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279 | |
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280 | a = [0.0, 0.0] |
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281 | b = [0.0, 2.0] |
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282 | c = [2.0, 0.0] |
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283 | d = [0.0, 4.0] |
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284 | e = [2.0, 2.0] |
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285 | f = [4.0, 0.0] |
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286 | |
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287 | points = [a, b, c, d, e, f] |
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288 | |
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289 | #bac, bce, ecf, dbe |
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290 | elements = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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291 | |
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292 | domain = Generic_Domain(points, elements) |
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293 | domain.conserved_quantities = ['stage', 'ymomentum'] |
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294 | domain.quantities['stage'] =\ |
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295 | Quantity(domain, [[1,2,3], [5,5,5], |
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296 | [0,0,9], [-6, 3, 3]]) |
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297 | |
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298 | domain.quantities['ymomentum'] =\ |
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299 | Quantity(domain, [[2,3,4], [5,5,5], |
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300 | [0,0,9], [-6, 3, 3]]) |
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301 | |
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302 | domain.check_integrity() |
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303 | |
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304 | |
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305 | #Write file |
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306 | filename = 'boundarytest' + str(time.time()) |
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307 | fid = open(filename + '.txt', 'w') |
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308 | start = time.mktime(time.strptime('2000', '%Y')) |
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309 | dt = 5*60 #Five minute intervals |
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310 | for i in range(10): |
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311 | t = start + i*dt |
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312 | t_string = time.strftime(time_format, time.gmtime(t)) |
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313 | |
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314 | fid.write('%s,%f %f\n' %(t_string, 1.0*i, sin(i*2*pi/10))) |
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315 | fid.close() |
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316 | |
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317 | |
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318 | #Convert ASCII file to NetCDF (Which is what we really like!) |
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319 | |
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320 | from anuga.shallow_water.data_manager import timefile2netcdf |
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321 | |
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322 | timefile2netcdf(filename, quantity_names = ['stage', 'ymomentum']) |
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323 | |
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324 | |
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325 | |
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326 | F = File_boundary(filename + '.tms', domain) |
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327 | |
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328 | |
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329 | os.remove(filename + '.txt') |
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330 | os.remove(filename + '.tms') |
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331 | |
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332 | |
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333 | |
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334 | |
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335 | #Check that midpoint coordinates at boundary are correctly computed |
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336 | assert num.allclose( F.midpoint_coordinates, |
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337 | [[1.0, 0.0], [0.0, 1.0], [3.0, 0.0], |
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338 | [3.0, 1.0], [1.0, 3.0], [0.0, 3.0]]) |
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339 | |
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340 | #assert allclose(F.midpoint_coordinates[(3,2)], [0.0, 3.0]) |
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341 | #assert allclose(F.midpoint_coordinates[(3,1)], [1.0, 3.0]) |
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342 | #assert allclose(F.midpoint_coordinates[(0,2)], [0.0, 1.0]) |
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343 | #assert allclose(F.midpoint_coordinates[(0,0)], [1.0, 0.0]) |
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344 | #assert allclose(F.midpoint_coordinates[(2,0)], [3.0, 0.0]) |
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345 | #assert allclose(F.midpoint_coordinates[(2,1)], [3.0, 1.0]) |
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346 | |
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347 | |
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348 | #Check time interpolation |
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349 | from anuga.config import default_boundary_tag |
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350 | domain.set_boundary( {default_boundary_tag: F} ) |
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351 | |
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352 | domain.time = 5*30/2 #A quarter way through first step |
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353 | q = F.evaluate() |
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354 | assert num.allclose(q, [1.0/4, sin(2*pi/10)/4]) |
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355 | |
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356 | |
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357 | domain.time = 2.5*5*60 #Half way between steps 2 and 3 |
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358 | q = F.evaluate() |
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359 | assert num.allclose(q, [2.5, (sin(2*2*pi/10) + sin(3*2*pi/10))/2]) |
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360 | |
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361 | |
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362 | |
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363 | def test_fileboundary_exception(self): |
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364 | """Test that boundary object complains if number of |
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365 | conserved quantities are wrong |
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366 | """ |
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367 | |
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368 | from quantity import Quantity |
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369 | import time, os |
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370 | from math import sin, pi |
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371 | from anuga.config import time_format |
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372 | |
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373 | a = [0.0, 0.0] |
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374 | b = [0.0, 2.0] |
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375 | c = [2.0,0.0] |
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376 | d = [0.0, 4.0] |
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377 | e = [2.0, 2.0] |
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378 | f = [4.0,0.0] |
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379 | |
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380 | points = [a, b, c, d, e, f] |
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381 | |
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382 | #bac, bce, ecf, dbe |
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383 | elements = [ [1,0,2], [1,2,4], [4,2,5], [3,1,4] ] |
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384 | |
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385 | domain = Generic_Domain(points, elements) |
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386 | domain.conserved_quantities = ['stage', 'xmomentum', 'ymomentum'] |
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387 | domain.evolved_quantities = ['stage', 'xmomentum', 'ymomentum'] |
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388 | domain.quantities['stage'] =\ |
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389 | Quantity(domain, [[1,2,3], [5,5,5], |
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390 | [0,0,9], [-6, 3, 3]]) |
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391 | |
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392 | domain.quantities['xmomentum'] =\ |
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393 | Quantity(domain, [[2,3,4], [5,5,5], |
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394 | [0,0,9], [-6, 3, 3]]) |
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395 | domain.quantities['ymomentum'] =\ |
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396 | Quantity(domain, [[2,3,4], [5,5,5], |
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397 | [0,0,9], [-6, 3, 3]]) |
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398 | |
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399 | domain.check_integrity() |
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400 | |
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401 | #Write file (with only two values) |
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402 | filename = 'boundarytest' + str(time.time()) |
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403 | fid = open(filename + '.txt', 'w') |
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404 | start = time.mktime(time.strptime('2000', '%Y')) |
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405 | dt = 5*60 #Five minute intervals |
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406 | for i in range(10): |
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407 | t = start + i*dt |
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408 | t_string = time.strftime(time_format, time.gmtime(t)) |
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409 | |
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410 | fid.write('%s,%f %f\n' %(t_string, 1.0*i, sin(i*2*pi/10))) |
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411 | fid.close() |
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412 | |
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413 | |
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414 | #Convert ASCII file to NetCDF (Which is what we really like!) |
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415 | from anuga.file_conversion.file_conversion import timefile2netcdf |
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416 | |
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417 | timefile2netcdf(filename, quantity_names = ['stage', 'xmomentum']) |
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418 | |
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419 | |
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420 | try: |
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421 | F = File_boundary(filename + '.tms', |
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422 | domain) |
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423 | except: |
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424 | pass |
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425 | else: |
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426 | raise 'Should have raised an exception' |
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427 | |
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428 | os.remove(filename + '.txt') |
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429 | os.remove(filename + '.tms') |
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430 | |
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431 | |
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432 | #------------------------------------------------------------- |
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433 | |
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434 | if __name__ == "__main__": |
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435 | suite = unittest.makeSuite(Test_Generic_Boundary_Conditions, 'test') |
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436 | runner = unittest.TextTestRunner() |
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437 | runner.run(suite) |
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