# source:trunk/anuga_core/source/anuga/structures/testing_culvert.py@7962

Last change on this file since 7962 was 7962, checked in by steve, 13 years ago

Got a flow from one region to another.

File size: 4.7 KB
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1import os.path
2import sys
3
4from anuga.utilities.system_tools import get_pathname_from_package
5from anuga.geometry.polygon_function import Polygon_function
6
7from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross
8from anuga.abstract_2d_finite_volumes.quantity import Quantity
9
10import anuga
11
12from anuga.structures.culvert_operator import Generic_box_culvert
13
14#from anuga.culvert_flows.culvert_routines import boyd_generalised_culvert_model
15
16from math import pi, pow, sqrt
17
18import numpy as num
19
20
21
22
23
24"""test_that_culvert_runs_rating
25
26This test exercises the culvert and checks values outside rating curve
27are dealt with
28"""
29
30path = get_pathname_from_package('anuga.culvert_flows')
31
32length = 40.
33width = 5.
34
35dx = dy = 0.5          # Resolution: Length of subdivisions on both axes
36
37points, vertices, boundary = rectangular_cross(int(length/dx),
38                                               int(width/dy),
39                                               len1=length,
40                                               len2=width)
41domain = anuga.Domain(points, vertices, boundary)
42domain.set_name('Test_culvert')                 # Output name
43domain.set_default_order(2)
44
45
46#----------------------------------------------------------------------
47# Setup initial conditions
48#----------------------------------------------------------------------
49
50def topography(x, y):
51    """Set up a weir
52
53    A culvert will connect either side
54    """
55    # General Slope of Topography
56    z=-x/1000
57
58    N = len(x)
59    for i in range(N):
60
61       # Sloping Embankment Across Channel
62        if 5.0 < x[i] < 10.1:
63            # Cut Out Segment for Culvert face
64            if  1.0+(x[i]-5.0)/5.0 <  y[i]  < 4.0 - (x[i]-5.0)/5.0:
65               z[i]=z[i]
66            else:
67               z[i] +=  0.5*(x[i] -5.0)    # Sloping Segment  U/S Face
68        if 10.0 < x[i] < 12.1:
69           z[i] +=  2.5                    # Flat Crest of Embankment
70        if 12.0 < x[i] < 14.5:
71            # Cut Out Segment for Culvert face
72            if  2.0-(x[i]-12.0)/2.5 <  y[i]  < 3.0 + (x[i]-12.0)/2.5:
73               z[i]=z[i]
74            else:
75               z[i] +=  2.5-1.0*(x[i] -12.0) # Sloping D/S Face
76
77
78    return z
79
80
81domain.set_quantity('elevation', topography)
82domain.set_quantity('friction', 0.01)         # Constant friction
83domain.set_quantity('stage',
84                    expression='elevation')   # Dry initial condition
85
86filename=os.path.join(path, 'example_rating_curve.csv')
87culvert1 = Generic_box_culvert(domain,
88                              end_point0=[9.0, 2.5],
89                              end_point1=[13.0, 2.5],
90                              width=1.00,
91                              verbose=False)
92
93
94#culvert2 = Generic_box_culvert(domain,
95#                              end_point0=[19.0, 2.5],
96#                              end_point1=[25.0, 2.5],
97#                              width=1.00,
98#                              verbose=False)
99
100
101
102
103#print domain.fractional_step_operators
104
105#domain.apply_fractional_steps()
106
107##-----------------------------------------------------------------------
108## Setup boundary conditions
109##-----------------------------------------------------------------------
110
111## Inflow based on Flow Depth and Approaching Momentum
112Bi = anuga.Dirichlet_boundary([1.0, 0.0, 0.0])
113Br = anuga.Reflective_boundary(domain)              # Solid reflective wall
114#Bo = anuga.Dirichlet_boundary([-5, 0, 0])           # Outflow
115
116## Upstream and downstream conditions that will exceed the rating curve
117## I.e produce delta_h outside the range [0, 10] specified in the the
118## file example_rating_curve.csv
119#Btus = anuga.Time_boundary(domain, \
120            #lambda t: [100*num.sin(2*pi*(t-4)/10), 0.0, 0.0])
121#Btds = anuga.Time_boundary(domain, \
122            #lambda t: [-5*(num.cos(2*pi*(t-4)/20)), 0.0, 0.0])
123#domain.set_boundary({'left': Btus, 'right': Btds, 'top': Br, 'bottom': Br})
124domain.set_boundary({'left': Bi, 'right': Br, 'top': Br, 'bottom': Br})
125
126
127##-----------------------------------------------------------------------
128## Evolve system through time
129##-----------------------------------------------------------------------
130
131#min_delta_w = sys.maxint
132#max_delta_w = -min_delta_w
133for t in domain.evolve(yieldstep = 1.0, finaltime = 300):
134    domain.write_time()
135    #delta_w = culvert.inlet.stage - culvert.outlet.stage
136
137    #if delta_w > max_delta_w: max_delta_w = delta_w
138    #if delta_w < min_delta_w: min_delta_w = delta_w
139
140    pass
141
142## Check that extreme values in rating curve have been exceeded
143## so that we know that condition has been exercised
144#assert min_delta_w < 0
145#assert max_delta_w > 10
146
147
148#os.remove('Test_culvert.sww')
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