| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | |
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| 4 | import unittest |
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| 5 | import os.path |
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| 6 | import sys |
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| 7 | |
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| 8 | from anuga.utilities.system_tools import get_pathname_from_package |
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| 9 | from anuga.utilities.polygon import Polygon_function |
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| 10 | |
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| 11 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross |
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| 12 | from anuga.abstract_2d_finite_volumes.quantity import Quantity |
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| 13 | |
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| 14 | from anuga.shallow_water import Domain, Reflective_boundary,\ |
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| 15 | Dirichlet_boundary,\ |
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| 16 | Transmissive_boundary, Time_boundary |
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| 17 | |
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| 18 | from anuga.culvert_flows.culvert_class import Culvert_flow_rating, Culvert_flow_energy |
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| 19 | from anuga.culvert_flows.culvert_routines import boyd_generalised_culvert_model |
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| 20 | |
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| 21 | from math import pi,pow,sqrt |
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| 22 | from Numeric import choose, greater, ones, sin, cos, exp, cosh, allclose |
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| 23 | |
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| 24 | |
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| 25 | |
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| 26 | class Test_Culvert(unittest.TestCase): |
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| 27 | def setUp(self): |
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| 28 | pass |
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| 29 | |
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| 30 | def tearDown(self): |
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| 31 | pass |
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| 32 | |
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| 33 | |
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| 34 | def test_that_culvert_runs_rating(self): |
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| 35 | """test_that_culvert_runs_rating |
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| 36 | |
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| 37 | This test exercises the culvert and checks values outside rating curve |
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| 38 | are dealt with |
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| 39 | """ |
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| 40 | |
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| 41 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 42 | |
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| 43 | length = 40. |
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| 44 | width = 5. |
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| 45 | |
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| 46 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 47 | |
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| 48 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 49 | int(width/dy), |
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| 50 | len1=length, |
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| 51 | len2=width) |
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| 52 | domain = Domain(points, vertices, boundary) |
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| 53 | domain.set_name('Test_culvert') # Output name |
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| 54 | domain.set_default_order(2) |
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| 55 | |
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| 56 | |
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| 57 | #---------------------------------------------------------------------- |
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| 58 | # Setup initial conditions |
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| 59 | #---------------------------------------------------------------------- |
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| 60 | |
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| 61 | def topography(x, y): |
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| 62 | """Set up a weir |
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| 63 | |
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| 64 | A culvert will connect either side |
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| 65 | """ |
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| 66 | # General Slope of Topography |
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| 67 | z=-x/1000 |
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| 68 | |
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| 69 | N = len(x) |
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| 70 | for i in range(N): |
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| 71 | |
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| 72 | # Sloping Embankment Across Channel |
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| 73 | if 5.0 < x[i] < 10.1: |
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| 74 | # Cut Out Segment for Culvert FACE |
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| 75 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 76 | z[i]=z[i] |
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| 77 | else: |
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| 78 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 79 | if 10.0 < x[i] < 12.1: |
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| 80 | z[i] += 2.5 # Flat Crest of Embankment |
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| 81 | if 12.0 < x[i] < 14.5: |
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| 82 | # Cut Out Segment for Culvert FACE |
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| 83 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 84 | z[i]=z[i] |
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| 85 | else: |
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| 86 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 87 | |
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| 88 | |
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| 89 | return z |
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| 90 | |
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| 91 | |
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| 92 | domain.set_quantity('elevation', topography) |
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| 93 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 94 | domain.set_quantity('stage', |
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| 95 | expression='elevation') # Dry initial condition |
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| 96 | |
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| 97 | filename=os.path.join(path, 'example_rating_curve.csv') |
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| 98 | culvert = Culvert_flow_rating(domain, |
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| 99 | culvert_description_filename=filename, |
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| 100 | end_point0=[9.0, 2.5], |
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| 101 | end_point1=[13.0, 2.5], |
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| 102 | verbose=False) |
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| 103 | |
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| 104 | domain.forcing_terms.append(culvert) |
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| 105 | |
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| 106 | |
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| 107 | #----------------------------------------------------------------------- |
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| 108 | # Setup boundary conditions |
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| 109 | #----------------------------------------------------------------------- |
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| 110 | |
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| 111 | # Inflow based on Flow Depth and Approaching Momentum |
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| 112 | Bi = Dirichlet_boundary([0.0, 0.0, 0.0]) |
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| 113 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 114 | Bo = Dirichlet_boundary([-5, 0, 0]) # Outflow |
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| 115 | |
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| 116 | # Upstream and downstream conditions that will exceed the rating curve |
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| 117 | # I.e produce delta_h outside the range [0, 10] specified in the the |
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| 118 | # file example_rating_curve.csv |
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| 119 | Btus = Time_boundary(domain, lambda t: [100*sin(2*pi*(t-4)/10), 0.0, 0.0]) |
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| 120 | Btds = Time_boundary(domain, lambda t: [-5*(cos(2*pi*(t-4)/20)), 0.0, 0.0]) |
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| 121 | domain.set_boundary({'left': Btus, 'right': Btds, 'top': Br, 'bottom': Br}) |
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| 122 | |
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| 123 | |
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| 124 | #----------------------------------------------------------------------- |
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| 125 | # Evolve system through time |
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| 126 | #----------------------------------------------------------------------- |
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| 127 | |
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| 128 | min_delta_w = sys.maxint |
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| 129 | max_delta_w = -min_delta_w |
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| 130 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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| 131 | delta_w = culvert.inlet.stage - culvert.outlet.stage |
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| 132 | |
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| 133 | if delta_w > max_delta_w: max_delta_w = delta_w |
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| 134 | if delta_w < min_delta_w: min_delta_w = delta_w |
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| 135 | |
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| 136 | #print domain.timestepping_statistics() |
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| 137 | pass |
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| 138 | |
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| 139 | # Check that extreme values in rating curve have been exceeded |
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| 140 | # so that we know that condition has been exercised |
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| 141 | assert min_delta_w < 0 |
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| 142 | assert max_delta_w > 10 |
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| 143 | |
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| 144 | |
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| 145 | def test_that_culvert_dry_bed_rating(self): |
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| 146 | """test_that_culvert_in_dry_bed_does_not_produce_flow(self): |
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| 147 | |
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| 148 | Test that culvert on a sloping dry bed doesn't produce flows |
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| 149 | although there will be a 'pressure' head due to delta_w > 0 |
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| 150 | |
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| 151 | This one is using the rating curve variant |
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| 152 | """ |
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| 153 | |
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| 154 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 155 | |
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| 156 | length = 40. |
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| 157 | width = 5. |
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| 158 | |
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| 159 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 160 | |
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| 161 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 162 | int(width/dy), |
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| 163 | len1=length, |
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| 164 | len2=width) |
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| 165 | domain = Domain(points, vertices, boundary) |
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| 166 | domain.set_name('Test_culvert_dry') # Output name |
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| 167 | domain.set_default_order(2) |
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| 168 | |
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| 169 | |
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| 170 | #---------------------------------------------------------------------- |
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| 171 | # Setup initial conditions |
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| 172 | #---------------------------------------------------------------------- |
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| 173 | |
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| 174 | def topography(x, y): |
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| 175 | """Set up a weir |
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| 176 | |
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| 177 | A culvert will connect either side |
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| 178 | """ |
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| 179 | # General Slope of Topography |
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| 180 | z=-x/1000 |
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| 181 | |
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| 182 | N = len(x) |
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| 183 | for i in range(N): |
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| 184 | |
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| 185 | # Sloping Embankment Across Channel |
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| 186 | if 5.0 < x[i] < 10.1: |
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| 187 | # Cut Out Segment for Culvert FACE |
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| 188 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 189 | z[i]=z[i] |
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| 190 | else: |
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| 191 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 192 | if 10.0 < x[i] < 12.1: |
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| 193 | z[i] += 2.5 # Flat Crest of Embankment |
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| 194 | if 12.0 < x[i] < 14.5: |
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| 195 | # Cut Out Segment for Culvert FACE |
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| 196 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 197 | z[i]=z[i] |
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| 198 | else: |
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| 199 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 200 | |
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| 201 | |
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| 202 | return z |
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| 203 | |
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| 204 | |
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| 205 | domain.set_quantity('elevation', topography) |
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| 206 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 207 | domain.set_quantity('stage', |
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| 208 | expression='elevation') # Dry initial condition |
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| 209 | |
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| 210 | |
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| 211 | filename = os.path.join(path, 'example_rating_curve.csv') |
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| 212 | culvert = Culvert_flow_rating(domain, |
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| 213 | culvert_description_filename=filename, |
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| 214 | end_point0=[9.0, 2.5], |
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| 215 | end_point1=[13.0, 2.5], |
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| 216 | verbose=False) |
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| 217 | |
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| 218 | domain.forcing_terms.append(culvert) |
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| 219 | |
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| 220 | |
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| 221 | #----------------------------------------------------------------------- |
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| 222 | # Setup boundary conditions |
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| 223 | #----------------------------------------------------------------------- |
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| 224 | |
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| 225 | # Inflow based on Flow Depth and Approaching Momentum |
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| 226 | |
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| 227 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 228 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
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| 229 | |
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| 230 | |
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| 231 | #----------------------------------------------------------------------- |
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| 232 | # Evolve system through time |
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| 233 | #----------------------------------------------------------------------- |
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| 234 | |
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| 235 | ref_volume = domain.get_quantity('stage').get_integral() |
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| 236 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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| 237 | #print domain.timestepping_statistics() |
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| 238 | new_volume = domain.get_quantity('stage').get_integral() |
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| 239 | |
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| 240 | msg = 'Total volume has changed' |
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| 241 | assert allclose(new_volume, ref_volume), msg |
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| 242 | pass |
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| 243 | |
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| 244 | |
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| 245 | |
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| 246 | def test_that_culvert_dry_bed_boyd(self): |
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| 247 | """test_that_culvert_in_dry_bed_does_not_produce_flow(self): |
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| 248 | |
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| 249 | Test that culvert on a sloping dry bed doesn't produce flows |
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| 250 | although there will be a 'pressure' head due to delta_w > 0 |
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| 251 | |
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| 252 | This one is using the 'Boyd' variant |
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| 253 | """ |
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| 254 | |
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| 255 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 256 | |
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| 257 | length = 40. |
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| 258 | width = 5. |
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| 259 | |
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| 260 | dx = dy = 1 # Resolution: Length of subdivisions on both axes |
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| 261 | |
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| 262 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 263 | int(width/dy), |
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| 264 | len1=length, |
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| 265 | len2=width) |
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| 266 | domain = Domain(points, vertices, boundary) |
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| 267 | domain.set_name('Test_culvert_dry') # Output name |
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| 268 | domain.set_default_order(2) |
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| 269 | |
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| 270 | |
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| 271 | #---------------------------------------------------------------------- |
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| 272 | # Setup initial conditions |
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| 273 | #---------------------------------------------------------------------- |
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| 274 | |
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| 275 | def topography(x, y): |
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| 276 | """Set up a weir |
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| 277 | |
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| 278 | A culvert will connect either side |
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| 279 | """ |
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| 280 | # General Slope of Topography |
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| 281 | z=-x/1000 |
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| 282 | |
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| 283 | N = len(x) |
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| 284 | for i in range(N): |
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| 285 | |
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| 286 | # Sloping Embankment Across Channel |
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| 287 | if 5.0 < x[i] < 10.1: |
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| 288 | # Cut Out Segment for Culvert FACE |
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| 289 | if 1.0+(x[i]-5.0)/5.0 < y[i] < 4.0 - (x[i]-5.0)/5.0: |
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| 290 | z[i]=z[i] |
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| 291 | else: |
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| 292 | z[i] += 0.5*(x[i] -5.0) # Sloping Segment U/S Face |
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| 293 | if 10.0 < x[i] < 12.1: |
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| 294 | z[i] += 2.5 # Flat Crest of Embankment |
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| 295 | if 12.0 < x[i] < 14.5: |
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| 296 | # Cut Out Segment for Culvert FACE |
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| 297 | if 2.0-(x[i]-12.0)/2.5 < y[i] < 3.0 + (x[i]-12.0)/2.5: |
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| 298 | z[i]=z[i] |
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| 299 | else: |
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| 300 | z[i] += 2.5-1.0*(x[i] -12.0) # Sloping D/S Face |
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| 301 | |
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| 302 | |
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| 303 | return z |
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| 304 | |
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| 305 | |
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| 306 | domain.set_quantity('elevation', topography) |
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| 307 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 308 | domain.set_quantity('stage', |
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| 309 | expression='elevation') # Dry initial condition |
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| 310 | |
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| 311 | |
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| 312 | filename = os.path.join(path, 'example_rating_curve.csv') |
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| 313 | |
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| 314 | |
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| 315 | culvert = Culvert_flow_energy(domain, |
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| 316 | label='Culvert No. 1', |
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| 317 | description='This culvert is a test unit 1.2m Wide by 0.75m High', |
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| 318 | end_point0=[9.0, 2.5], |
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| 319 | end_point1=[13.0, 2.5], |
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| 320 | width=1.20,height=0.75, |
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| 321 | culvert_routine=boyd_generalised_culvert_model, |
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| 322 | number_of_barrels=1, |
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| 323 | update_interval=2, |
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| 324 | verbose=True) |
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| 325 | |
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| 326 | domain.forcing_terms.append(culvert) |
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| 327 | |
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| 328 | |
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| 329 | #----------------------------------------------------------------------- |
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| 330 | # Setup boundary conditions |
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| 331 | #----------------------------------------------------------------------- |
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| 332 | |
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| 333 | # Inflow based on Flow Depth and Approaching Momentum |
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| 334 | |
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| 335 | Br = Reflective_boundary(domain) # Solid reflective wall |
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| 336 | domain.set_boundary({'left': Br, 'right': Br, 'top': Br, 'bottom': Br}) |
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| 337 | |
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| 338 | |
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| 339 | #----------------------------------------------------------------------- |
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| 340 | # Evolve system through time |
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| 341 | #----------------------------------------------------------------------- |
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| 342 | |
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| 343 | ref_volume = domain.get_quantity('stage').get_integral() |
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| 344 | for t in domain.evolve(yieldstep = 1, finaltime = 25): |
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| 345 | #print domain.timestepping_statistics() |
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| 346 | new_volume = domain.get_quantity('stage').get_integral() |
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| 347 | |
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| 348 | msg = 'Total volume has changed' |
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| 349 | assert allclose(new_volume, ref_volume), msg |
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| 350 | pass |
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| 351 | |
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| 352 | |
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| 353 | |
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| 354 | |
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| 355 | |
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| 356 | def Xtest_predicted_boyd_flow(self): |
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| 357 | """test_predicted_boyd_flow |
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| 358 | |
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| 359 | Test that flows predicted by the boyd method are consistent with what what |
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| 360 | is calculated in engineering codes. |
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| 361 | The data was supplied by Petar Milevski |
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| 362 | """ |
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| 363 | |
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| 364 | path = get_pathname_from_package('anuga.culvert_flows') |
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| 365 | |
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| 366 | length = 12. |
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| 367 | width = 5. |
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| 368 | |
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| 369 | dx = dy = 0.5 # Resolution: Length of subdivisions on both axes |
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| 370 | |
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| 371 | points, vertices, boundary = rectangular_cross(int(length/dx), |
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| 372 | int(width/dy), |
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| 373 | len1=length, |
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| 374 | len2=width) |
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| 375 | domain = Domain(points, vertices, boundary) |
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| 376 | |
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| 377 | domain.set_name('test_culvert') # Output name |
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| 378 | domain.set_default_order(2) |
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| 379 | |
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| 380 | |
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| 381 | #---------------------------------------------------------------------- |
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| 382 | # Setup initial conditions |
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| 383 | #---------------------------------------------------------------------- |
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| 384 | |
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| 385 | def topography(x, y): |
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| 386 | # General Slope of Topography |
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| 387 | z=-x/10 |
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| 388 | |
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| 389 | return z |
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| 390 | |
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| 391 | |
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| 392 | domain.set_quantity('elevation', topography) |
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| 393 | domain.set_quantity('friction', 0.01) # Constant friction |
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| 394 | domain.set_quantity('stage', expression='elevation') |
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| 395 | |
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| 396 | |
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| 397 | Q0 = domain.get_quantity('stage') |
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| 398 | Q1 = Quantity(domain) |
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| 399 | |
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| 400 | # Add depths to stage |
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| 401 | head_water_depth = 0.169 |
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| 402 | tail_water_depth = 0.089 |
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| 403 | |
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| 404 | inlet_poly = [[0,0], [6,0], [6,5], [0,5]] |
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| 405 | outlet_poly = [[6,0], [12,0], [12,5], [6,5]] |
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| 406 | |
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| 407 | Q1.set_values(Polygon_function([(inlet_poly, head_water_depth), |
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| 408 | (outlet_poly, tail_water_depth)])) |
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| 409 | |
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| 410 | domain.set_quantity('stage', Q0 + Q1) |
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| 411 | |
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| 412 | |
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| 413 | |
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| 414 | culvert = Culvert_flow_energy(domain, |
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| 415 | label='Test culvert', |
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| 416 | description='4 m test culvert', |
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| 417 | end_point0=[4.0, 2.5], |
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| 418 | end_point1=[8.0, 2.5], |
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| 419 | width=1.20, |
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| 420 | height=0.75, |
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| 421 | culvert_routine=boyd_generalised_culvert_model, |
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| 422 | number_of_barrels=1, |
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| 423 | verbose=True) |
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| 424 | |
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| 425 | |
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| 426 | domain.forcing_terms.append(culvert) |
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| 427 | |
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| 428 | # Call |
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| 429 | culvert(domain) |
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| 430 | |
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| 431 | #print 'Inlet flow', culvert.inlet.rate |
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| 432 | #print 'Outlet flow', culvert.outlet.rate |
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| 433 | |
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| 434 | |
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| 435 | |
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| 436 | #------------------------------------------------------------- |
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| 437 | if __name__ == "__main__": |
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| 438 | #suite = unittest.makeSuite(Test_Culvert, 'test_predicted_boyd_flow') |
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| 439 | suite = unittest.makeSuite(Test_Culvert, 'test') |
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| 440 | runner = unittest.TextTestRunner() |
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| 441 | runner.run(suite) |
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| 442 | |
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