[7767] | 1 | import os |
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| 2 | import unittest |
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| 3 | import tempfile |
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| 4 | import numpy as num |
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| 5 | |
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| 6 | from anuga.coordinate_transforms.geo_reference import Geo_reference |
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| 7 | from csv_file import load_csv_as_array, load_csv_as_dict |
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| 8 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular |
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| 9 | from anuga.shallow_water.shallow_water_domain import Domain |
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[7770] | 10 | from sww import load_sww_as_domain, weed, get_mesh_and_quantities_from_file |
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[7767] | 11 | |
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| 12 | # boundary functions |
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| 13 | from anuga.shallow_water.boundaries import Reflective_boundary, \ |
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| 14 | Field_boundary, Transmissive_momentum_set_stage_boundary, \ |
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| 15 | Transmissive_stage_zero_momentum_boundary |
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| 16 | from anuga.abstract_2d_finite_volumes.generic_boundary_conditions\ |
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| 17 | import Transmissive_boundary, Dirichlet_boundary, \ |
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| 18 | Time_boundary, File_boundary, AWI_boundary |
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| 19 | |
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| 20 | |
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| 21 | class Test_sww(unittest.TestCase): |
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| 22 | def setUp(self): |
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| 23 | self.verbose = False |
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| 24 | pass |
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| 25 | |
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| 26 | def tearDown(self): |
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| 27 | pass |
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| 28 | |
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| 29 | def test_sww2domain1(self): |
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| 30 | ################################################ |
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| 31 | #Create a test domain, and evolve and save it. |
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| 32 | ################################################ |
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| 33 | from mesh_factory import rectangular |
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| 34 | |
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| 35 | #Create basic mesh |
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| 36 | |
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| 37 | yiel=0.01 |
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| 38 | points, vertices, boundary = rectangular(10,10) |
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| 39 | |
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| 40 | #Create shallow water domain |
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| 41 | domain = Domain(points, vertices, boundary) |
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| 42 | domain.geo_reference = Geo_reference(56,11,11) |
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| 43 | domain.smooth = False |
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| 44 | domain.store = True |
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| 45 | domain.set_name('bedslope') |
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| 46 | domain.default_order=2 |
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| 47 | #Bed-slope and friction |
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| 48 | domain.set_quantity('elevation', lambda x,y: -x/3) |
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| 49 | domain.set_quantity('friction', 0.1) |
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| 50 | # Boundary conditions |
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| 51 | from math import sin, pi |
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| 52 | Br = Reflective_boundary(domain) |
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| 53 | Bt = Transmissive_boundary(domain) |
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| 54 | Bd = Dirichlet_boundary([0.2,0.,0.]) |
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| 55 | Bw = Time_boundary(domain=domain,f=lambda t: [(0.1*sin(t*2*pi)), 0.0, 0.0]) |
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| 56 | |
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| 57 | #domain.set_boundary({'left': Bd, 'right': Br, 'top': Br, 'bottom': Br}) |
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| 58 | domain.set_boundary({'left': Bd, 'right': Bd, 'top': Bd, 'bottom': Bd}) |
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| 59 | |
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| 60 | domain.quantities_to_be_stored['xmomentum'] = 2 |
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| 61 | domain.quantities_to_be_stored['ymomentum'] = 2 |
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| 62 | #Initial condition |
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| 63 | h = 0.05 |
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| 64 | elevation = domain.quantities['elevation'].vertex_values |
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| 65 | domain.set_quantity('stage', elevation + h) |
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| 66 | |
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| 67 | domain.check_integrity() |
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| 68 | #Evolution |
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| 69 | #domain.tight_slope_limiters = 1 |
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| 70 | for t in domain.evolve(yieldstep = yiel, finaltime = 0.05): |
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| 71 | #domain.write_time() |
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| 72 | pass |
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| 73 | |
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| 74 | |
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| 75 | |
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| 76 | filename = domain.datadir + os.sep + domain.get_name() + '.sww' |
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| 77 | domain2 = load_sww_as_domain(filename, None, fail_if_NaN=False, |
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| 78 | verbose=self.verbose) |
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| 79 | #points, vertices, boundary = rectangular(15,15) |
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| 80 | #domain2.boundary = boundary |
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| 81 | ################### |
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| 82 | ##NOW TEST IT!!! |
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| 83 | ################### |
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| 84 | |
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| 85 | os.remove(filename) |
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| 86 | |
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| 87 | bits = ['vertex_coordinates'] |
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| 88 | for quantity in domain.quantities_to_be_stored: |
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| 89 | bits.append('get_quantity("%s").get_integral()' % quantity) |
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| 90 | bits.append('get_quantity("%s").get_values()' % quantity) |
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| 91 | |
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| 92 | for bit in bits: |
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| 93 | #print 'testing that domain.'+bit+' has been restored' |
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| 94 | #print bit |
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| 95 | #print 'done' |
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| 96 | assert num.allclose(eval('domain.'+bit),eval('domain2.'+bit)) |
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| 97 | |
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| 98 | ###################################### |
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| 99 | #Now evolve them both, just to be sure |
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| 100 | ######################################x |
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| 101 | domain.time = 0. |
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| 102 | from time import sleep |
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| 103 | |
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| 104 | final = .1 |
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| 105 | domain.set_quantity('friction', 0.1) |
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| 106 | domain.store = False |
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| 107 | domain.set_boundary({'left': Bd, 'right': Bd, 'top': Bd, 'bottom': Bd}) |
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| 108 | |
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| 109 | |
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| 110 | for t in domain.evolve(yieldstep = yiel, finaltime = final): |
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| 111 | #domain.write_time() |
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| 112 | pass |
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| 113 | |
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| 114 | final = final - (domain2.starttime-domain.starttime) |
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| 115 | #BUT since domain1 gets time hacked back to 0: |
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| 116 | final = final + (domain2.starttime-domain.starttime) |
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| 117 | |
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| 118 | domain2.smooth = False |
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| 119 | domain2.store = False |
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| 120 | domain2.default_order=2 |
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| 121 | domain2.set_quantity('friction', 0.1) |
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| 122 | #Bed-slope and friction |
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| 123 | # Boundary conditions |
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| 124 | Bd2=Dirichlet_boundary([0.2,0.,0.]) |
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| 125 | domain2.boundary = domain.boundary |
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| 126 | #print 'domain2.boundary' |
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| 127 | #print domain2.boundary |
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| 128 | domain2.set_boundary({'left': Bd, 'right': Bd, 'top': Bd, 'bottom': Bd}) |
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| 129 | #domain2.set_boundary({'exterior': Bd}) |
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| 130 | |
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| 131 | domain2.check_integrity() |
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| 132 | |
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| 133 | for t in domain2.evolve(yieldstep = yiel, finaltime = final): |
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| 134 | #domain2.write_time() |
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| 135 | pass |
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| 136 | |
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| 137 | ################### |
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| 138 | ##NOW TEST IT!!! |
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| 139 | ################## |
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| 140 | |
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| 141 | bits = ['vertex_coordinates'] |
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| 142 | |
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| 143 | for quantity in ['elevation','stage', 'ymomentum','xmomentum']: |
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| 144 | bits.append('get_quantity("%s").get_integral()' %quantity) |
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| 145 | bits.append('get_quantity("%s").get_values()' %quantity) |
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| 146 | |
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| 147 | #print bits |
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| 148 | for bit in bits: |
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| 149 | #print bit |
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| 150 | #print eval('domain.'+bit) |
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| 151 | #print eval('domain2.'+bit) |
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| 152 | |
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| 153 | #print eval('domain.'+bit+'-domain2.'+bit) |
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| 154 | msg = 'Values in the two domains are different for ' + bit |
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| 155 | assert num.allclose(eval('domain.'+bit),eval('domain2.'+bit), |
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| 156 | rtol=1.e-5, atol=3.e-8), msg |
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| 157 | |
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| 158 | |
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| 159 | |
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[7770] | 160 | def test_get_mesh_and_quantities_from_sww_file(self): |
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| 161 | """test_get_mesh_and_quantities_from_sww_file(self): |
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| 162 | """ |
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| 163 | |
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| 164 | # Generate a test sww file with non trivial georeference |
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| 165 | |
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| 166 | import time, os |
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| 167 | from Scientific.IO.NetCDF import NetCDFFile |
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| 168 | |
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| 169 | # Setup |
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| 170 | from mesh_factory import rectangular |
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| 171 | |
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| 172 | # Create basic mesh (100m x 5m) |
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| 173 | width = 5 |
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| 174 | length = 50 |
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| 175 | t_end = 10 |
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| 176 | points, vertices, boundary = rectangular(length, width, 50, 5) |
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| 177 | |
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| 178 | # Create shallow water domain |
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| 179 | domain = Domain(points, vertices, boundary, |
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| 180 | geo_reference = Geo_reference(56,308500,6189000)) |
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| 181 | |
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| 182 | domain.set_name('flowtest') |
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| 183 | swwfile = domain.get_name() + '.sww' |
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| 184 | domain.set_datadir('.') |
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| 185 | |
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| 186 | Br = Reflective_boundary(domain) # Side walls |
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| 187 | Bd = Dirichlet_boundary([1, 0, 0]) # inflow |
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| 188 | |
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| 189 | domain.set_boundary( {'left': Bd, 'right': Bd, 'top': Br, 'bottom': Br}) |
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| 190 | |
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| 191 | for t in domain.evolve(yieldstep=1, finaltime = t_end): |
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| 192 | pass |
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| 193 | |
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| 194 | |
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| 195 | # Read it |
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| 196 | |
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| 197 | # Get mesh and quantities from sww file |
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| 198 | X = get_mesh_and_quantities_from_file(swwfile, |
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| 199 | quantities=['elevation', |
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| 200 | 'stage', |
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| 201 | 'xmomentum', |
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| 202 | 'ymomentum'], |
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| 203 | verbose=False) |
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| 204 | mesh, quantities, time = X |
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| 205 | |
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| 206 | |
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| 207 | # Check that mesh has been recovered |
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| 208 | assert num.alltrue(mesh.triangles == domain.get_triangles()) |
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| 209 | assert num.allclose(mesh.nodes, domain.get_nodes()) |
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| 210 | |
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| 211 | # Check that time has been recovered |
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| 212 | assert num.allclose(time, range(t_end+1)) |
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| 213 | |
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| 214 | # Check that quantities have been recovered |
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| 215 | # (sww files use single precision) |
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| 216 | z=domain.get_quantity('elevation').get_values(location='unique vertices') |
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| 217 | assert num.allclose(quantities['elevation'], z) |
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| 218 | |
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| 219 | for q in ['stage', 'xmomentum', 'ymomentum']: |
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| 220 | # Get quantity at last timestep |
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| 221 | q_ref=domain.get_quantity(q).get_values(location='unique vertices') |
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| 222 | |
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| 223 | #print q,quantities[q] |
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| 224 | q_sww=quantities[q][-1,:] |
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| 225 | |
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| 226 | msg = 'Quantity %s failed to be recovered' %q |
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| 227 | assert num.allclose(q_ref, q_sww, atol=1.0e-6), msg |
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| 228 | |
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| 229 | # Cleanup |
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| 230 | os.remove(swwfile) |
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| 231 | |
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| 232 | |
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| 233 | |
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| 234 | def test_weed(self): |
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| 235 | coordinates1 = [[0.,0.],[1.,0.],[1.,1.],[1.,0.],[2.,0.],[1.,1.]] |
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| 236 | volumes1 = [[0,1,2],[3,4,5]] |
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| 237 | boundary1= {(0,1): 'external',(1,2): 'not external',(2,0): 'external',(3,4): 'external',(4,5): 'external',(5,3): 'not external'} |
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| 238 | coordinates2,volumes2,boundary2=weed(coordinates1,volumes1,boundary1) |
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| 239 | |
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| 240 | points2 = {(0.,0.):None,(1.,0.):None,(1.,1.):None,(2.,0.):None} |
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| 241 | |
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| 242 | assert len(points2)==len(coordinates2) |
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| 243 | for i in range(len(coordinates2)): |
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| 244 | coordinate = tuple(coordinates2[i]) |
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| 245 | assert points2.has_key(coordinate) |
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| 246 | points2[coordinate]=i |
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| 247 | |
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| 248 | for triangle in volumes1: |
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| 249 | for coordinate in triangle: |
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| 250 | assert coordinates2[points2[tuple(coordinates1[coordinate])]][0]==coordinates1[coordinate][0] |
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| 251 | assert coordinates2[points2[tuple(coordinates1[coordinate])]][1]==coordinates1[coordinate][1] |
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| 252 | |
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[7767] | 253 | ################################################################################# |
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| 254 | |
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| 255 | if __name__ == "__main__": |
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| 256 | suite = unittest.makeSuite(Test_sww, 'test') |
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| 257 | runner = unittest.TextTestRunner(verbosity=1) |
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| 258 | runner.run(suite) |
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