1 | """Validation of the AnuGA implementation of the shallow water wave equation. |
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2 | |
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3 | This script sets up Okushiri Island benchmark as published at the |
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4 | |
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5 | THE THIRD INTERNATIONAL WORKSHOP ON LONG-WAVE RUNUP MODELS |
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6 | June 17-18 2004 |
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7 | Wrigley Marine Science Center |
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8 | Catalina Island, California |
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9 | http://www.cee.cornell.edu/longwave/ |
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10 | |
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11 | |
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12 | The validation data was downloaded and made available in this directory |
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13 | for convenience but the original data is available at |
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14 | http://www.cee.cornell.edu/longwave/index.cfm?page=benchmark&problem=2 |
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15 | where a detailed description of the problem is also available. |
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16 | |
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17 | |
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18 | Run create_okushiri.py to process the boundary condition and build a the |
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19 | mesh before running this script. |
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20 | |
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21 | """ |
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22 | |
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23 | # Module imports |
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24 | from anuga.shallow_water import Domain |
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25 | from anuga.shallow_water import Reflective_boundary |
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26 | from anuga.shallow_water import Transmissive_Momentum_Set_Stage_boundary |
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27 | from anuga.abstract_2d_finite_volumes.util import file_function |
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28 | |
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29 | import project |
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30 | |
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31 | |
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32 | #------------------------- |
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33 | # Create Domain from mesh |
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34 | #------------------------- |
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35 | domain = Domain(project.mesh_filename, use_cache=True, verbose=True) |
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36 | print domain.statistics() |
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37 | |
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38 | |
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39 | #------------------------- |
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40 | # Initial Conditions |
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41 | #------------------------- |
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42 | domain.set_quantity('friction', 0.0) |
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43 | domain.set_quantity('stage', 0.0) |
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44 | domain.set_quantity('elevation', |
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45 | filename=project.bathymetry_filename, |
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46 | alpha=0.02, |
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47 | verbose=True, |
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48 | use_cache=True) |
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49 | |
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50 | |
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51 | #------------------------- |
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52 | # Set simulation parameters |
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53 | #------------------------- |
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54 | domain.set_name(project.output_filename) # Name of output sww file |
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55 | domain.set_default_order(2) # Apply second order scheme |
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56 | domain.set_all_limiters(0.9) # Max second order scheme (old lim) |
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57 | domain.set_minimum_storable_height(0.001) # Don't store w < 0.001m |
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58 | domain.set_maximum_allowed_speed(0.1) # Allow a little runoff (0.1 is OK) |
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59 | domain.tight_slope_limiters = 1 |
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60 | domain.beta_h = 0.0 |
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61 | |
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62 | #Timings on AMD64-242 (beta_h=0) |
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63 | # tight_slope_limiters = 0: |
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64 | # 3035s - 3110s |
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65 | # tight_slope_limiters = 1: |
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66 | # 3000s - 3008s |
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67 | # |
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68 | # beta_h>0: In the order of 3200s |
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69 | |
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70 | #------------------------- |
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71 | # Boundary Conditions |
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72 | #------------------------- |
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73 | |
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74 | # Create boundary function from timeseries provided in file |
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75 | function = file_function(project.boundary_filename, |
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76 | domain, verbose=True) |
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77 | |
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78 | # Create and assign boundary objects |
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79 | Bts = Transmissive_Momentum_Set_Stage_boundary(domain, function) |
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80 | Br = Reflective_boundary(domain) |
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81 | domain.set_boundary({'wave': Bts, 'wall': Br}) |
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82 | |
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83 | |
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84 | # Select triangle containing ch5 for diagnostic output |
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85 | # around known gauge |
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86 | triangle_id = domain.get_triangle_containing_point([4.521, 1.196]) |
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87 | # This should get triangle id 32833 with centroid (4.5244, 1.1972) |
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88 | |
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89 | |
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90 | #------------------------- |
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91 | # Evolve through time |
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92 | #------------------------- |
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93 | import time |
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94 | t0 = time.time() |
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95 | |
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96 | for t in domain.evolve(yieldstep = 0.05, finaltime = 22.5): |
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97 | print domain.timestepping_statistics(track_speeds=False, |
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98 | triangle_id=triangle_id) |
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99 | |
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100 | print 'That took %.2f seconds' %(time.time()-t0) |
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