Changeset 6122
 Timestamp:
 Jan 8, 2009, 12:18:48 PM (10 years ago)
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 1 added
 1 edited
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anuga_core/source/anuga/shallow_water/test_shallow_water_domain.py
r6086 r6122 13 13 from anuga.abstract_2d_finite_volumes.quantity import Quantity 14 14 from anuga.geospatial_data.geospatial_data import Geospatial_data 15 15 from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross 16 16 from shallow_water_domain import * 17 17 … … 3007 3007 3008 3008 3009 3010 3009 3010 def Xtest_inflow_outflow_conservation(self): 3011 """test_inflow_outflow_conservation 3012 3013 Test what happens if water is abstracted from one area and 3014 injected into another  especially if there is not enough 3015 water to match the abstraction. 3016 This tests that the total volume is kept constant under a range of 3017 scenarios. 3018 """ 3019 3020 from math import pi, cos, sin 3021 3022 length = 20. 3023 width = 10. 3024 3025 dx = dy = 2 # 1 or 2 OK 3026 points, vertices, boundary = rectangular_cross(int(length/dx), 3027 int(width/dy), 3028 len1=length, 3029 len2=width) 3030 domain = Domain(points, vertices, boundary) 3031 domain.set_name('test_inflow_conservation') # Output name 3032 domain.set_default_order(2) 3033 3034 3035 # Flat surface with 1m of water 3036 stage = 1.0 3037 domain.set_quantity('elevation', 0) 3038 domain.set_quantity('stage', stage) 3039 domain.set_quantity('friction', 0) 3040 3041 Br = Reflective_boundary(domain) 3042 domain.set_boundary({'left': Br, 'right': Br, 'bottom': Br, 'top': Br}) 3043 3044 # Setup one forcing term, constant inflow of 2 m^3/s on a circle 3045 domain.forcing_terms = [] 3046 domain.forcing_terms.append(Inflow(domain, rate=2.0, center=(5,5), radius=1)) 3047 3048 domain.compute_forcing_terms() 3049 #print domain.quantities['stage'].explicit_update 3050 3051 # Check that update values are correct 3052 for x in domain.quantities['stage'].explicit_update: 3053 assert allclose(x, 2.0/pi) or allclose(x, 0.0) 3054 3055 3056 # Check volumes without inflow 3057 domain.forcing_terms = [] 3058 initial_volume = domain.quantities['stage'].get_integral() 3059 3060 assert allclose(initial_volume, width*length*stage) 3061 3062 for t in domain.evolve(yieldstep = 0.05, finaltime = 5.0): 3063 volume = domain.quantities['stage'].get_integral() 3064 assert allclose (volume, initial_volume) 3065 3066 3067 # Now apply the inflow and check volumes for a range of stage values 3068 for stage in [2.0, 1.0, 0.5, 0.25, 0.1, 0.0]: 3069 domain.time = 0.0 3070 domain.set_quantity('stage', stage) 3071 3072 domain.forcing_terms = [] 3073 domain.forcing_terms.append(Inflow(domain, rate=2.0, center=(5,5), radius=1)) 3074 initial_volume = domain.quantities['stage'].get_integral() 3075 predicted_volume = initial_volume 3076 dt = 0.05 3077 for t in domain.evolve(yieldstep = dt, finaltime = 5.0): 3078 volume = domain.quantities['stage'].get_integral() 3079 3080 assert allclose (volume, predicted_volume) 3081 predicted_volume = predicted_volume + 2.0/pi/100/dt # Why 100? 3082 3083 3084 # Apply equivalent outflow only and check volumes for a range of stage values 3085 for stage in [2.0, 1.0, 0.5, 0.25, 0.1, 0.0]: 3086 print stage 3087 3088 domain.time = 0.0 3089 domain.set_quantity('stage', stage) 3090 domain.forcing_terms = [] 3091 domain.forcing_terms.append(Inflow(domain, rate=2.0, center=(15,5), radius=1)) 3092 initial_volume = domain.quantities['stage'].get_integral() 3093 predicted_volume = initial_volume 3094 dt = 0.05 3095 for t in domain.evolve(yieldstep = dt, finaltime = 5.0): 3096 volume = domain.quantities['stage'].get_integral() 3097 3098 print t, volume, predicted_volume 3099 assert allclose (volume, predicted_volume) 3100 predicted_volume = predicted_volume  2.0/pi/100/dt # Why 100? 3101 3102 3103 # Apply both inflow and outflow and check volumes being constant for a 3104 # range of stage values 3105 for stage in [2.0, 1.0, 0.5, 0.25, 0.1, 0.0]: 3106 print stage 3107 3108 domain.time = 0.0 3109 domain.set_quantity('stage', stage) 3110 domain.forcing_terms = [] 3111 domain.forcing_terms.append(Inflow(domain, rate=2.0, center=(5,5), radius=1)) 3112 domain.forcing_terms.append(Inflow(domain, rate=2.0, center=(15,5), radius=1)) 3113 initial_volume = domain.quantities['stage'].get_integral() 3114 3115 dt = 0.05 3116 for t in domain.evolve(yieldstep = dt, finaltime = 5.0): 3117 volume = domain.quantities['stage'].get_integral() 3118 3119 print t, volume 3120 assert allclose (volume, initial_volume) 3121 3122 3123 3011 3124 3012 3125 ##################################################### … … 6448 6561 if __name__ == "__main__": 6449 6562 6450 suite = unittest.makeSuite(Test_Shallow_Water, 'test')6563 #suite = unittest.makeSuite(Test_Shallow_Water, 'test') 6451 6564 #suite = unittest.makeSuite(Test_Shallow_Water, 'test_rainfall_forcing_with_evolve') 6452 6565 #suite = unittest.makeSuite(Test_Shallow_Water,'test_get_energy_through_cross_section_with_g') 6453 6566 #suite = unittest.makeSuite(Test_Shallow_Water,'test_fitting_using_shallow_water_domain') 6454 6567 #suite = unittest.makeSuite(Test_Shallow_Water,'test_tight_slope_limiters') 6455 #suite = unittest.makeSuite(Test_Shallow_Water,'test_get_maximum_inundation_from_sww')6456 #suite = unittest.makeSuite(Test_Shallow_Water,'test_ time_dependent_rainfall')6568 suite = unittest.makeSuite(Test_Shallow_Water,'test_inflow_outflow_conservation') 6569 #suite = unittest.makeSuite(Test_Shallow_Water,'test_outflow_conservation_problem_temp') 6457 6570 6458 6571
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