1 | """Example of shallow water wave equation. |
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2 | |
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3 | Specific methods pertaining to the 2D shallow water equation |
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4 | are imported from shallow_water |
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5 | for use with the generic finite volume framework |
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6 | |
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7 | A example of running this program is; |
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8 | python run_tsh.py n hill.tsh 0.05 1 |
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9 | """ |
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10 | |
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11 | ###################### |
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12 | # Module imports |
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13 | # |
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14 | |
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15 | from Numeric import array |
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16 | import time |
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17 | import sys |
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18 | from os import sep, path |
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19 | |
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20 | from anuga.shallow_water import Domain, Reflective_boundary, \ |
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21 | Dirichlet_boundary, Transmissive_boundary, Time_boundary |
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22 | from anuga.abstract_2d_finite_volumes.region import Add_value_to_region, \ |
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23 | Set_region |
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24 | from anuga.visualiser import RealtimeVisualiser |
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25 | |
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26 | |
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27 | |
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28 | #from anuga.config import default_datadir |
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29 | |
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30 | ###################### |
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31 | # Domain |
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32 | |
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33 | import sys |
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34 | |
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35 | |
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36 | ######NEW |
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37 | def add_x_y(x, y): |
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38 | return x+y |
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39 | |
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40 | ######NEW |
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41 | |
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42 | usage = "usage: %s ['visual'|'non-visual'] pmesh_file_name yieldstep finaltime" % path.basename(sys.argv[0]) |
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43 | |
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44 | if len(sys.argv) < 4: |
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45 | print usage |
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46 | else: |
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47 | if sys.argv[1][0] == "n" or sys.argv[1][0] == "N": |
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48 | visualise = False |
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49 | else: |
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50 | visualise = True |
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51 | |
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52 | filename = sys.argv[2] |
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53 | yieldstep = float(sys.argv[3]) |
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54 | finaltime = float(sys.argv[4]) |
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55 | |
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56 | print 'Creating domain from', filename |
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57 | domain = Domain(filename) |
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58 | |
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59 | # check if the visualiser will work |
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60 | try: |
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61 | xx = RealtimeVisualiser(domain) |
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62 | except: |
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63 | print "Warning: Error in RealtimeVisualiser. Could not visualise." |
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64 | visualise = False |
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65 | |
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66 | print "Number of triangles = ", len(domain) |
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67 | print "domain.geo_reference",domain.geo_reference |
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68 | domain.checkpoint = False #True |
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69 | domain.default_order = 1 |
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70 | domain.smooth = True |
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71 | domain.set_datadir('.') |
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72 | |
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73 | if (visualise): |
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74 | domain.store = False #True #Store for visualisation purposes |
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75 | else: |
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76 | domain.store = True #True #Store for visualisation purposes |
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77 | domain.format = 'sww' #Native netcdf visualisation format |
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78 | |
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79 | file_path, filename = path.split(filename) |
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80 | filename, ext = path.splitext(filename) |
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81 | if domain.smooth is True: |
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82 | s = 'smooth' |
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83 | else: |
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84 | s = 'nonsmooth' |
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85 | domain.set_name(filename + '_' + s + '_ys'+ str(yieldstep) + \ |
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86 | '_ft' + str(finaltime)) |
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87 | print "Output being written to " + domain.get_datadir() + sep + \ |
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88 | domain.get_name() + "." + domain.format |
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89 | |
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90 | |
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91 | #Set friction |
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92 | manning = 0.07 |
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93 | inflow_stage = 10.0 |
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94 | |
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95 | |
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96 | domain.set_quantity('friction', manning) |
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97 | |
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98 | #domain.set_quantity('stage', add_x_y) |
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99 | #domain.set_quantity('elevation', |
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100 | # domain.quantities['stage'].vertex_values+ \ |
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101 | # domain.quantities['elevation'].vertex_values) |
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102 | #domain.set_quantity('stage', 0.0) |
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103 | |
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104 | |
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105 | ###################### |
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106 | # Boundary conditions |
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107 | # |
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108 | print 'Boundaries' |
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109 | reflective = Reflective_boundary(domain) |
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110 | Bt = Transmissive_boundary(domain) |
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111 | |
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112 | #Constant inflow |
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113 | Bd = Dirichlet_boundary(array([3, 0.0, 0.0])) |
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114 | |
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115 | #Time dependent inflow |
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116 | from math import sin, pi |
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117 | Bw = Time_boundary(domain=domain, |
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118 | f=lambda x: array([(1 + sin(x*pi/4))*\ |
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119 | (inflow_stage*(sin(2.5*x*pi)+0.7)),0,0])) |
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120 | |
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121 | |
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122 | print 'Available boundary tags are', domain.get_boundary_tags() |
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123 | |
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124 | #Set boundary conditions |
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125 | |
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126 | tags = {} |
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127 | tags['left'] = Bw |
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128 | tags['1'] = Bd |
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129 | |
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130 | tags['wave'] = Bd |
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131 | tags['wave'] = Time_boundary(domain=domain, |
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132 | f=lambda x: array([(1 + sin(x*pi/4))*\ |
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133 | (0.15*(sin(2.5*x*pi)+0.7)),0,0])) |
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134 | tags['internal'] = None |
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135 | tags['levee'] = None |
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136 | tags['0'] = reflective |
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137 | tags['wall'] = reflective |
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138 | tags['external'] = reflective |
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139 | tags['exterior'] = reflective |
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140 | tags['open'] = Bd |
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141 | tags['opening'] = None |
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142 | |
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143 | domain.set_boundary(tags) |
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144 | |
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145 | # region tags |
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146 | |
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147 | domain.set_region(Set_region('slow', 'friction', 20, location='unique vertices')) |
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148 | domain.set_region(Set_region('silo', 'elevation', 20, location='unique vertices')) |
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149 | domain.set_region(Set_region('wet', 'elevation', 0, location='unique vertices')) |
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150 | domain.set_region(Set_region('dry', 'elevation', 2, location='unique vertices')) |
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151 | domain.set_region(Add_value_to_region('wet', 'stage', 1.5, location='unique vertices', initial_quantity='elevation')) |
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152 | domain.set_region(Add_value_to_region('dry', 'stage', 0, location='unique vertices', initial_quantity='elevation')) |
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153 | |
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154 | #print domain.quantities['elevation'].vertex_values |
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155 | #print domain.quantities['stage'].vertex_values |
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156 | |
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157 | domain.check_integrity() |
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158 | |
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159 | # prepare the visualiser |
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160 | if visualise is True: |
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161 | v = RealtimeVisualiser(domain) |
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162 | v.render_quantity_height('elevation', dynamic=False) |
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163 | v.render_quantity_height('stage', dynamic=True) |
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164 | v.colour_height_quantity('stage', (0.0, 0.0, 0.8)) |
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165 | v.start() |
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166 | ###################### |
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167 | #Evolution |
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168 | t0 = time.time() |
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169 | for t in domain.evolve(yieldstep = yieldstep, finaltime = finaltime): |
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170 | domain.write_time() |
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171 | if visualise is True: |
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172 | v.update() |
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173 | if visualise is True: |
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174 | v.evolveFinished() |
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175 | |
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176 | |
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177 | print 'That took %.2f seconds' %(time.time()-t0) |
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178 | |
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179 | |
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