1 | """ |
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2 | |
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3 | Script for running a breaking wave simulation of Jon Hinwood's wave tank. |
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4 | |
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5 | Duncan Gray, GA - 2007 |
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6 | """ |
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7 | |
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8 | |
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9 | #---------------------------------------------------------------------------- |
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10 | # Import necessary modules |
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11 | #---------------------------------------------------------------------------- |
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12 | |
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13 | # Standard modules |
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14 | import time |
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15 | from os.path import join |
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16 | |
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17 | # Related major packages |
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18 | from anuga.shallow_water import Domain, Reflective_boundary, Time_boundary |
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19 | from anuga.fit_interpolate.interpolate import interpolate_sww2csv |
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20 | from anuga.abstract_2d_finite_volumes.util import file_function |
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21 | from anuga.utilities.interp import interp |
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22 | |
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23 | # Scenario specific imports |
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24 | import project |
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25 | import create_mesh |
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26 | from prepare_time_boundary import csv2tms |
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27 | |
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28 | |
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29 | def main(metadata_dic, |
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30 | maximum_triangle_area, |
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31 | yieldstep, |
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32 | boundary_path=None, |
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33 | friction=0., # planed wood 0.012 http://www.lmnoeng.com/manningn.htm |
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34 | outputdir_name=None, |
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35 | isTest=False, |
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36 | width=1.0, |
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37 | use_limits=True, |
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38 | end_tag = ''): |
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39 | """ |
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40 | Run a simulation. |
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41 | """ |
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42 | |
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43 | id = metadata_dic['scenario_id'] |
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44 | |
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45 | if isTest is True: |
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46 | yieldstep = 1.0 |
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47 | finaltime = 15. |
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48 | maximum_triangle_area=0.1 |
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49 | outputdir_name += '_test' |
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50 | else: |
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51 | finaltime = None |
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52 | |
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53 | outputdir_name = paras2outputdir_tag(mta=maximum_triangle_area, |
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54 | yieldstep=yieldstep, |
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55 | width=width, |
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56 | use_limits=use_limits, |
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57 | friction=friction, |
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58 | end_tag=end_tag, |
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59 | outputdir_name=outputdir_name) |
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60 | basename = outputdir_name |
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61 | |
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62 | if finaltime is None: |
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63 | finaltime = metadata_dic['wave_times'][1] + 0.1 |
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64 | |
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65 | boundary_file_path = id + '_boundary.tsm' |
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66 | |
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67 | # Convert the boundary file, .csv to .tsm |
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68 | csv2tms(boundary_file_path, metadata_dic['xleft'][1]) |
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69 | |
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70 | mesh_filename = join(project.output_dir,basename + '.msh') |
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71 | |
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72 | #------------------------------------------------------------------------- |
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73 | # Create the triangular mesh |
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74 | #------------------------------------------------------------------------- |
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75 | |
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76 | create_mesh.generate(mesh_filename, metadata_dic, width=width, |
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77 | maximum_triangle_area=maximum_triangle_area) |
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78 | |
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79 | #------------------------------------------------------------------------- |
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80 | # Setup computational domain |
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81 | #------------------------------------------------------------------------- |
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82 | domain = Domain(mesh_filename, use_cache = False, verbose = True) |
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83 | |
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84 | print 'Number of triangles = ', len(domain) |
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85 | print 'The extent is ', domain.get_extent() |
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86 | print domain.statistics() |
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87 | |
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88 | domain.set_name(basename) |
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89 | domain.set_datadir(project.output_dir) |
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90 | domain.set_quantities_to_be_stored(['stage', 'xmomentum', 'ymomentum']) |
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91 | domain.set_minimum_storable_height(0.0001) |
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92 | |
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93 | if use_limits is True: |
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94 | domain.set_default_order(2) # Use second order spatial scheme |
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95 | domain.set_timestepping_method('rk2') |
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96 | domain.use_edge_limiter = True |
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97 | domain.tight_slope_limiters = True |
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98 | |
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99 | domain.beta_w = 0.6 |
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100 | domain.beta_uh = 0.6 |
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101 | domain.beta_vh = 0.6 |
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102 | |
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103 | |
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104 | #------------------------------------------------------------------------- |
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105 | # Setup initial conditions |
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106 | #------------------------------------------------------------------------- |
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107 | |
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108 | domain.set_quantity('stage', 0.) #the z origin is the still water level |
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109 | domain.set_quantity('friction', friction) |
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110 | elevation_function = Elevation_function(metadata_dic) |
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111 | domain.set_quantity('elevation', elevation_function) |
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112 | |
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113 | function = file_function(boundary_file_path, domain, verbose=True) |
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114 | |
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115 | Br = Reflective_boundary(domain) |
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116 | Bts = Time_boundary(domain, function) |
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117 | domain.set_boundary( {'wall': Br, 'wave': Bts} ) |
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118 | |
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119 | #------------------------------------------------------------------------- |
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120 | # Evolve system through time |
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121 | #------------------------------------------------------------------------- |
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122 | t0 = time.time() |
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123 | |
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124 | for t in domain.evolve(yieldstep, finaltime): |
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125 | domain.write_time() |
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126 | print 'That took %.2f seconds' %(time.time()-t0) |
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127 | print 'finished' |
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128 | |
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129 | |
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130 | #------------------------------------------------------------------------- |
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131 | # Calculate gauge info |
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132 | #------------------------------------------------------------------------- |
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133 | |
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134 | if isTest is not True: |
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135 | points = [] |
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136 | for gauge_x in metadata_dic['gauge_x']: |
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137 | points.append([gauge_x, 0.0]) |
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138 | |
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139 | interpolate_sww2csv(join(project.output_dir,basename+".sww"), |
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140 | points, |
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141 | join(project.output_dir,basename + "_depth.csv"), |
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142 | join(project.output_dir,basename + \ |
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143 | "_velocit_x.csv"), |
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144 | join(project.output_dir, basename + \ |
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145 | "_velocity_y.csv"), |
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146 | join(project.output_dir,basename + "_stage.csv")) |
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147 | |
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148 | |
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149 | def paras2outputdir_tag(mta, |
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150 | yieldstep, |
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151 | width, |
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152 | use_limits, |
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153 | friction, |
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154 | end_tag, |
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155 | outputdir_name=None): |
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156 | """ |
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157 | Given run parameters return a string that can be used to name files. |
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158 | """ |
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159 | if outputdir_name is None: |
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160 | outputdir_name = '' |
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161 | |
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162 | if use_limits is True: |
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163 | outputdir_name += '_lmts' |
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164 | else: |
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165 | outputdir_name += '_nolmts' |
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166 | outputdir_name += '_wdth_' + str(width) |
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167 | outputdir_name += '_z_' + str(friction) |
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168 | outputdir_name += '_ys_' + str(yieldstep) |
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169 | outputdir_name += '_mta_' + str(mta) |
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170 | outputdir_name += end_tag |
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171 | |
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172 | return outputdir_name |
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173 | |
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174 | |
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175 | class Elevation_function: |
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176 | """ |
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177 | |
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178 | Create a callable instance that returns the bed surface of the |
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179 | flume given the scenario metadata. |
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180 | |
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181 | """ |
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182 | def __init__(self, metadata_dic): |
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183 | self.xslope_position = [metadata_dic['xleft'][0], |
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184 | metadata_dic['xtoe'][0], |
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185 | metadata_dic['xbeach'][0], |
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186 | metadata_dic['xright'][0]] |
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187 | self.yslope_height = [metadata_dic['xleft'][1], |
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188 | metadata_dic['xtoe'][1], |
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189 | metadata_dic['xbeach'][1], |
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190 | metadata_dic['xright'][1]] |
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191 | |
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192 | def __call__(self, x,y): |
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193 | z = interp(self.yslope_height, self.xslope_position, x) |
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194 | return z |
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195 | |
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196 | #------------------------------------------------------------- |
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197 | if __name__ == "__main__": |
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198 | |
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199 | from scenarios import scenarios |
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200 | |
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201 | #scenarios = [scenarios[0]] |
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202 | |
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203 | width = 0.1 |
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204 | maximum_triangle_area=0.01 |
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205 | yieldstep = 0.01 |
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206 | #yieldstep = 0.5 |
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207 | friction=0.0 |
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208 | isTest=True |
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209 | isTest=False |
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210 | |
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211 | for run_data in scenarios: |
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212 | main(run_data, |
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213 | maximum_triangle_area=maximum_triangle_area, |
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214 | yieldstep=yieldstep, |
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215 | width=width, |
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216 | isTest=isTest, |
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217 | outputdir_name=run_data['scenario_id'], |
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218 | use_limits=False, |
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219 | friction=friction, |
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220 | end_tag='_A') |
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