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