1 | from anuga.geometry.polygon import inside_polygon, polygon_area |
---|
2 | from anuga.config import g |
---|
3 | import anuga.utilities.log as log |
---|
4 | |
---|
5 | from boyd_box_culvert import Boyd_box_culvert |
---|
6 | |
---|
7 | class Culvert_operator: |
---|
8 | """Culvert flow - transfer water from one rectangular box to another. |
---|
9 | Sets up the geometry of problem |
---|
10 | |
---|
11 | This is the base class for culverts. Inherit from this class (and overwrite |
---|
12 | compute_discharge method for specific subclasses) |
---|
13 | |
---|
14 | Input: Two points, pipe_size (either diameter or width, height), |
---|
15 | mannings_rougness, |
---|
16 | """ |
---|
17 | |
---|
18 | def __init__(self, |
---|
19 | domain, |
---|
20 | end_point0, |
---|
21 | end_point1, |
---|
22 | width, |
---|
23 | height=None, |
---|
24 | apron=None, |
---|
25 | enquiry_gap=0.2, |
---|
26 | verbose=False): |
---|
27 | |
---|
28 | self.domain = domain |
---|
29 | self.domain.set_fractional_step_operator(self) |
---|
30 | self.end_points = [end_point0, end_point1] |
---|
31 | |
---|
32 | if height is None: |
---|
33 | height = width |
---|
34 | |
---|
35 | if apron is None: |
---|
36 | apron = width |
---|
37 | |
---|
38 | self.width = width |
---|
39 | self.height = height |
---|
40 | self.apron = apron |
---|
41 | self.enquiry_gap = enquiry_gap |
---|
42 | self.verbose = verbose |
---|
43 | |
---|
44 | self.culvert = Boyd_box_culvert(self.domain, |
---|
45 | self.end_points, |
---|
46 | self.width, |
---|
47 | self.height, |
---|
48 | self.apron, |
---|
49 | self.enquiry_gap, |
---|
50 | self.verbose) |
---|
51 | |
---|
52 | self.routine = self.culvert.routine |
---|
53 | |
---|
54 | self.inlets = self.culvert.get_inlets() |
---|
55 | |
---|
56 | if self.verbose: |
---|
57 | self.print_stats() |
---|
58 | |
---|
59 | |
---|
60 | def __call__(self): |
---|
61 | |
---|
62 | timestep = self.domain.get_timestep() |
---|
63 | |
---|
64 | Q, barrel_speed, outlet_depth = self.routine() |
---|
65 | |
---|
66 | |
---|
67 | inflow = self.routine.get_inflow() |
---|
68 | outflow = self.routine.get_outflow() |
---|
69 | |
---|
70 | |
---|
71 | old_inflow_height = inflow.get_average_height() |
---|
72 | old_inflow_xmom = inflow.get_average_xmom() |
---|
73 | old_inflow_ymom = inflow.get_average_ymom() |
---|
74 | |
---|
75 | if old_inflow_height > 0.0 : |
---|
76 | Qstar = Q/old_inflow_height |
---|
77 | else: |
---|
78 | Qstar = 0.0 |
---|
79 | |
---|
80 | factor = 1.0/(1.0 + Qstar*timestep/inflow.get_area()) |
---|
81 | |
---|
82 | |
---|
83 | |
---|
84 | new_inflow_height = old_inflow_height*factor |
---|
85 | new_inflow_xmom = old_inflow_xmom*factor |
---|
86 | new_inflow_ymom = old_inflow_ymom*factor |
---|
87 | |
---|
88 | |
---|
89 | inflow.set_heights(new_inflow_height) |
---|
90 | |
---|
91 | #inflow.set_xmoms(Q/inflow.get_area()) |
---|
92 | #inflow.set_ymoms(0.0) |
---|
93 | |
---|
94 | |
---|
95 | inflow.set_xmoms(new_inflow_xmom) |
---|
96 | inflow.set_ymoms(new_inflow_ymom) |
---|
97 | |
---|
98 | |
---|
99 | loss = (old_inflow_height - new_inflow_height)*inflow.get_area() |
---|
100 | |
---|
101 | |
---|
102 | # set outflow |
---|
103 | if old_inflow_height > 0.0 : |
---|
104 | timestep_star = timestep*new_inflow_height/old_inflow_height |
---|
105 | else: |
---|
106 | timestep_star = 0.0 |
---|
107 | |
---|
108 | |
---|
109 | outflow_extra_height = Q*timestep_star/outflow.get_area() |
---|
110 | outflow_direction = - outflow.outward_culvert_vector |
---|
111 | outflow_extra_momentum = outflow_extra_height*barrel_speed*outflow_direction |
---|
112 | |
---|
113 | |
---|
114 | gain = outflow_extra_height*outflow.get_area() |
---|
115 | |
---|
116 | #print Q, Q*timestep, barrel_speed, outlet_depth, Qstar, factor, timestep_star |
---|
117 | #print ' ', loss, gain |
---|
118 | |
---|
119 | |
---|
120 | new_outflow_height = outflow.get_average_height() + outflow_extra_height |
---|
121 | new_outflow_xmom = outflow.get_average_xmom() + outflow_extra_momentum[0] |
---|
122 | new_outflow_ymom = outflow.get_average_ymom() + outflow_extra_momentum[1] |
---|
123 | |
---|
124 | outflow.set_heights(new_outflow_height) |
---|
125 | |
---|
126 | outflow.set_xmoms(barrel_speed*new_outflow_height*outflow_direction[0]) |
---|
127 | outflow.set_ymoms(barrel_speed*new_outflow_height*outflow_direction[1]) |
---|
128 | |
---|
129 | #outflow.set_xmoms(new_outflow_xmom) |
---|
130 | #outflow.set_ymoms(new_outflow_ymom) |
---|
131 | |
---|
132 | #print ' outflow volume ',outflow.get_total_water_volume() |
---|
133 | |
---|
134 | def print_stats(self): |
---|
135 | |
---|
136 | print '=====================================' |
---|
137 | print 'Generic Culvert Operator' |
---|
138 | print '=====================================' |
---|
139 | |
---|
140 | print 'Culvert' |
---|
141 | print self.culvert |
---|
142 | |
---|
143 | print 'Culvert Routine' |
---|
144 | print self.routine |
---|
145 | |
---|
146 | for i, inlet in enumerate(self.inlets): |
---|
147 | print '-------------------------------------' |
---|
148 | print 'Inlet %i' % i |
---|
149 | print '-------------------------------------' |
---|
150 | |
---|
151 | print 'inlet triangle indices and centres' |
---|
152 | print inlet.triangle_indices |
---|
153 | print self.domain.get_centroid_coordinates()[inlet.triangle_indices] |
---|
154 | |
---|
155 | print 'polygon' |
---|
156 | print inlet.polygon |
---|
157 | |
---|
158 | print '=====================================' |
---|
159 | |
---|
160 | |
---|
161 | # FIXME(Ole): Write in C and reuse this function by similar code |
---|
162 | # in interpolate.py |
---|
163 | def interpolate_linearly(x, xvec, yvec): |
---|
164 | |
---|
165 | msg = 'Input to function interpolate_linearly could not be converted ' |
---|
166 | msg += 'to numerical scalar: x = %s' % str(x) |
---|
167 | try: |
---|
168 | x = float(x) |
---|
169 | except: |
---|
170 | raise Exception, msg |
---|
171 | |
---|
172 | |
---|
173 | # Check bounds |
---|
174 | if x < xvec[0]: |
---|
175 | msg = 'Value provided = %.2f, interpolation minimum = %.2f.'\ |
---|
176 | % (x, xvec[0]) |
---|
177 | raise Below_interval, msg |
---|
178 | |
---|
179 | if x > xvec[-1]: |
---|
180 | msg = 'Value provided = %.2f, interpolation maximum = %.2f.'\ |
---|
181 | %(x, xvec[-1]) |
---|
182 | raise Above_interval, msg |
---|
183 | |
---|
184 | |
---|
185 | # Find appropriate slot within bounds |
---|
186 | i = 0 |
---|
187 | while x > xvec[i]: i += 1 |
---|
188 | |
---|
189 | |
---|
190 | x0 = xvec[i-1] |
---|
191 | x1 = xvec[i] |
---|
192 | alpha = (x - x0)/(x1 - x0) |
---|
193 | |
---|
194 | y0 = yvec[i-1] |
---|
195 | y1 = yvec[i] |
---|
196 | y = alpha*y1 + (1-alpha)*y0 |
---|
197 | |
---|
198 | return y |
---|
199 | |
---|
200 | |
---|
201 | |
---|
202 | def read_culvert_description(culvert_description_filename): |
---|
203 | |
---|
204 | # Read description file |
---|
205 | fid = open(culvert_description_filename) |
---|
206 | |
---|
207 | read_rating_curve_data = False |
---|
208 | rating_curve = [] |
---|
209 | for i, line in enumerate(fid.readlines()): |
---|
210 | |
---|
211 | if read_rating_curve_data is True: |
---|
212 | fields = line.split(',') |
---|
213 | head_difference = float(fields[0].strip()) |
---|
214 | flow_rate = float(fields[1].strip()) |
---|
215 | barrel_velocity = float(fields[2].strip()) |
---|
216 | |
---|
217 | rating_curve.append([head_difference, flow_rate, barrel_velocity]) |
---|
218 | |
---|
219 | if i == 0: |
---|
220 | # Header |
---|
221 | continue |
---|
222 | if i == 1: |
---|
223 | # Metadata |
---|
224 | fields = line.split(',') |
---|
225 | label=fields[0].strip() |
---|
226 | type=fields[1].strip().lower() |
---|
227 | assert type in ['box', 'pipe'] |
---|
228 | |
---|
229 | width=float(fields[2].strip()) |
---|
230 | height=float(fields[3].strip()) |
---|
231 | length=float(fields[4].strip()) |
---|
232 | number_of_barrels=int(fields[5].strip()) |
---|
233 | #fields[6] refers to losses |
---|
234 | description=fields[7].strip() |
---|
235 | |
---|
236 | if line.strip() == '': continue # Skip blanks |
---|
237 | |
---|
238 | if line.startswith('Rating'): |
---|
239 | read_rating_curve_data = True |
---|
240 | # Flow data follows |
---|
241 | |
---|
242 | fid.close() |
---|
243 | |
---|
244 | return label, type, width, height, length, number_of_barrels, description, rating_curve |
---|
245 | |
---|