| 1 | """Script for running a tsunami inundation scenario for Broome, WA, Australia. |
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| 2 | |
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| 3 | Source data such as elevation and boundary data is assumed to be available in |
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| 4 | directories specified by project.py |
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| 5 | The output sww file is stored in project.outputtimedir |
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| 6 | |
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| 7 | The scenario is defined by a triangular mesh created from project.polygon, |
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| 8 | the elevation data and a tsunami wave generated by MOST. |
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| 9 | |
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| 10 | Ole Nielsen and Duncan Gray, GA - 2005 and Nick Bartzis, GA - 2006 |
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| 11 | """ |
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| 12 | |
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| 13 | #------------------------------------------------------------------------------- |
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| 14 | # Import necessary modules |
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| 15 | #------------------------------------------------------------------------------- |
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| 16 | |
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| 17 | # Standard modules |
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| 18 | import os |
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| 19 | import time |
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| 20 | from shutil import copy |
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| 21 | from os import mkdir, access, F_OK |
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| 22 | import sys |
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| 23 | |
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| 24 | # Related major packages |
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| 25 | from anuga.shallow_water import Domain, Reflective_boundary, \ |
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| 26 | Dirichlet_boundary, Time_boundary, File_boundary |
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| 27 | from anuga.shallow_water.data_manager import convert_dem_from_ascii2netcdf, dem2pts |
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| 28 | from anuga.abstract_2d_finite_volumes.combine_pts import combine_rectangular_points_files |
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| 29 | from anuga.geospatial_data.geospatial_data import * |
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| 30 | from anuga.abstract_2d_finite_volumes.util import Screen_Catcher |
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| 31 | |
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| 32 | # Application specific imports |
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| 33 | import project # Definition of file names and polygons |
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| 34 | |
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| 35 | #------------------------------------------------------------------------------- |
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| 36 | # Define scenario as either slump or fixed_wave. |
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| 37 | #------------------------------------------------------------------------------- |
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| 38 | scenario = 'slump' # 'fixedwave' |
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| 39 | mkdir (scenario) |
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| 40 | basename = scenario + project.basename |
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| 41 | |
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| 42 | #------------------------------------------------------------------------------- |
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| 43 | # Copy scripts to time stamped output directory and capture screen |
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| 44 | # output to file |
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| 45 | #------------------------------------------------------------------------------- |
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| 46 | |
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| 47 | # creates copy of code in output dir if dir doesn't exist |
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| 48 | if access(project.outputtimedir,F_OK) == 0 : |
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| 49 | mkdir (project.outputtimedir) |
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| 50 | copy (project.codedirname, project.outputtimedir + project.codename) |
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| 51 | copy (project.codedir + 'runcairns.py', project.outputtimedir + 'runcairns2.py') |
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| 52 | print'output dir', project.outputtimedir |
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| 53 | |
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| 54 | #normal screen output is stored in |
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| 55 | screen_output_name = project.outputtimedir + "screen_output.txt" |
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| 56 | screen_error_name = project.outputtimedir + "screen_error.txt" |
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| 57 | |
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| 58 | #used to catch screen output to file |
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| 59 | sys.stdout = Screen_Catcher(screen_output_name) |
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| 60 | sys.stderr = Screen_Catcher(screen_error_name) |
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| 61 | |
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| 62 | print 'USER: ', project.user |
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| 63 | |
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| 64 | #------------------------------------------------------------------------------- |
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| 65 | # Preparation of topographic data |
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| 66 | # |
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| 67 | # Convert ASC 2 DEM 2 PTS using source data and store result in source data |
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| 68 | #------------------------------------------------------------------------------- |
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| 69 | |
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| 70 | # filenames |
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| 71 | dem_name = project.dem_name |
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| 72 | meshname = project.meshname+'.msh' |
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| 73 | |
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| 74 | # creates DEM from asc data |
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| 75 | convert_dem_from_ascii2netcdf(dem_name, use_cache=True, verbose=True) |
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| 76 | |
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| 77 | #creates pts file for onshore DEM |
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| 78 | dem2pts(dem_name, use_cache=True, verbose=True) |
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| 79 | |
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| 80 | #---------------------------------------------------------------------------- |
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| 81 | # Create the triangular mesh based on overall clipping polygon with a tagged |
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| 82 | # boundary and interior regions defined in project.py along with |
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| 83 | # resolutions (maximal area of per triangle) for each polygon |
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| 84 | #------------------------------------------------------------------------------- |
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| 85 | |
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| 86 | from anuga.pmesh.mesh_interface import create_mesh_from_regions |
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| 87 | remainder_res = 10000000 |
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| 88 | islands_res = 100000 |
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| 89 | cairns_res = 100000 |
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| 90 | shallow_res = 500000 |
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| 91 | interior_regions = [[project.poly_cairns, cairns_res], |
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| 92 | [project.poly_island0, islands_res], |
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| 93 | [project.poly_island1, islands_res], |
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| 94 | [project.poly_island2, islands_res], |
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| 95 | [project.poly_island3, islands_res], |
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| 96 | [project.poly_shallow, shallow_res]] |
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| 97 | |
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| 98 | from caching import cache |
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| 99 | _ = cache(create_mesh_from_regions, |
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| 100 | project.polyAll, |
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| 101 | {'boundary_tags': {'top': [0], 'ocean_east': [1], |
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| 102 | 'bottom': [2], 'onshore': [3]}, |
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| 103 | 'maximum_triangle_area': remainder_res, |
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| 104 | 'filename': meshname, |
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| 105 | 'interior_regions': interior_regions}, |
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| 106 | verbose = True, evaluate=False) |
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| 107 | print 'created mesh' |
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| 108 | |
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| 109 | #------------------------------------------------------------------------------- |
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| 110 | # Setup computational domain |
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| 111 | #------------------------------------------------------------------------------- |
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| 112 | domain = Domain(meshname, use_cache = True, verbose = True) |
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| 113 | |
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| 114 | print 'Number of triangles = ', len(domain) |
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| 115 | print 'The extent is ', domain.get_extent() |
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| 116 | print domain.statistics() |
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| 117 | |
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| 118 | domain.set_name(basename) #domain.set_name(project.basename) |
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| 119 | domain.set_datadir(scenario) #domain.set_datadir(project.outputtimedir) |
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| 120 | domain.set_quantities_to_be_stored(['stage', 'xmomentum', 'ymomentum']) |
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| 121 | domain.set_minimum_storable_height(0.01) |
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| 122 | |
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| 123 | #------------------------------------------------------------------------------- |
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| 124 | # Setup initial conditions |
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| 125 | #------------------------------------------------------------------------------- |
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| 126 | |
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| 127 | tide = 0.0 |
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| 128 | domain.set_quantity('stage', tide) |
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| 129 | domain.set_quantity('friction', 0.0) |
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| 130 | domain.set_quantity('elevation', |
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| 131 | filename = project.dem_name + '.pts', |
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| 132 | use_cache = True, |
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| 133 | verbose = True, |
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| 134 | alpha = 0.1 |
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| 135 | ) |
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| 136 | |
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| 137 | #------------------------------------------------------------------------------- |
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| 138 | # Setup information for slump scenario (to be applied 1 min into simulation |
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| 139 | #------------------------------------------------------------------------------- |
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| 140 | if scenario == 'slump': |
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| 141 | from anuga.shallow_water.smf import slump_tsunami # Function for submarine slump |
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| 142 | tsunami_source = slump_tsunami(length=15000.0, |
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| 143 | depth=project.slump_depth, |
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| 144 | slope=6.0, |
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| 145 | thickness=250.0, |
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| 146 | radius=3330, |
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| 147 | dphi=0.23, |
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| 148 | x0=project.slump_origin[0], |
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| 149 | y0=project.slump_origin[1], |
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| 150 | alpha=0.0, |
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| 151 | domain=domain, |
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| 152 | verbose=True) |
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| 153 | |
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| 154 | |
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| 155 | #------------------------------------------------------------------------------- |
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| 156 | # Setup boundary conditions |
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| 157 | #------------------------------------------------------------------------------- |
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| 158 | print 'Available boundary tags', domain.get_boundary_tags() |
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| 159 | |
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| 160 | Br = Reflective_boundary(domain) |
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| 161 | Bd = Dirichlet_boundary([tide,0,0]) |
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| 162 | |
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| 163 | # 7 min square wave starting at 1 min, 10m high |
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| 164 | if scenario == 'fixed_wave': |
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| 165 | Bw = Time_boundary(domain = domain, |
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| 166 | f=lambda t: [(60<t<480)*10, 0, 0]) |
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| 167 | domain.set_boundary( {'ocean_east': Bw, 'bottom': Bd, 'onshore': Bd, |
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| 168 | 'top': Bd} ) |
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| 169 | |
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| 170 | # boundary conditions for slump scenario |
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| 171 | if scenario == 'slump': |
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| 172 | domain.set_boundary( {'ocean_east': Bd, 'bottom': Bd, 'onshore': Bd, |
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| 173 | 'top': Bd} ) |
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| 174 | |
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| 175 | |
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| 176 | #------------------------------------------------------------------------------- |
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| 177 | # Evolve system through time |
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| 178 | #------------------------------------------------------------------------------- |
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| 179 | import time |
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| 180 | t0 = time.time() |
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| 181 | |
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| 182 | from Numeric import allclose |
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| 183 | from anuga.abstract_2d_finite_volumes.quantity import Quantity |
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| 184 | |
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| 185 | if scenario == 'slump': |
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| 186 | |
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| 187 | for t in domain.evolve(yieldstep = 30, finaltime = 60): |
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| 188 | domain.write_time() |
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| 189 | domain.write_boundary_statistics(tags = 'ocean_east') |
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| 190 | |
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| 191 | # add slump |
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| 192 | thisstagestep = domain.get_quantity('stage') |
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| 193 | if allclose(t, 60): |
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| 194 | slump = Quantity(domain) |
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| 195 | slump.set_values(tsunami_source) |
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| 196 | domain.set_quantity('stage', slump + thisstagestep) |
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| 197 | |
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| 198 | # save every two mins leading up to wave approaching land |
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| 199 | for t in domain.evolve(yieldstep = 120, finaltime = 1000, |
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| 200 | skip_initial_step = True): |
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| 201 | domain.write_time() |
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| 202 | domain.write_boundary_statistics(tags = 'ocean_east') |
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| 203 | |
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| 204 | # save every 30 secs as wave starts inundating ashore |
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| 205 | for t in domain.evolve(yieldstep = 30, finaltime = 10000, |
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| 206 | skip_initial_step = True): |
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| 207 | domain.write_time() |
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| 208 | domain.write_boundary_statistics(tags = 'ocean_east') |
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| 209 | |
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| 210 | if scenario == 'fixed_wave': |
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| 211 | |
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| 212 | # save every two mins leading up to wave approaching land |
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| 213 | for t in domain.evolve(yieldstep = 120, finaltime = 1000): |
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| 214 | domain.write_time() |
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| 215 | domain.write_boundary_statistics(tags = 'ocean_east') |
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| 216 | |
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| 217 | # save every 30 secs as wave starts inundating ashore |
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| 218 | for t in domain.evolve(yieldstep = 30, finaltime = 10000, |
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| 219 | skip_initial_step = True): |
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| 220 | domain.write_time() |
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| 221 | domain.write_boundary_statistics(tags = 'ocean_east') |
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| 222 | |
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| 223 | print 'That took %.2f seconds' %(time.time()-t0) |
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