| 1 | """Script for running a tsunami inundation scenario for Sydney, NSW, 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.outputdir |
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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 simulated submarine landslide. |
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| 9 | |
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| 10 | Ole Nielsen and Duncan Gray, GA - 2005 and Adrian Hitchman and Jane Sexton, 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 | |
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| 21 | # Related major packages |
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| 22 | from pyvolution.shallow_water import Domain, Reflective_boundary, Dirichlet_boundary |
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| 23 | from pyvolution.data_manager import convert_dem_from_ascii2netcdf, dem2pts |
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| 24 | #from pyvolution.data_manager_old import convert_dem_from_ascii2netcdf, dem2pts |
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| 25 | from pyvolution.combine_pts import combine_rectangular_points_files |
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| 26 | from pyvolution.pmesh2domain import pmesh_to_domain_instance |
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| 27 | from pyvolution.quantity import Quantity |
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| 28 | from Numeric import allclose |
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| 29 | from utilities.polygon import inside_polygon |
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| 30 | |
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| 31 | # Application specific imports |
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| 32 | import project # Definition of file names and polygons |
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| 33 | from pyvolution.smf import slump_tsunami # Function for submarine mudslide |
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| 34 | |
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| 35 | |
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| 36 | #------------------------------------------------------------------------------- |
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| 37 | # Preparation of topographic data |
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| 38 | # |
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| 39 | # Convert ASC 2 DEM 2 PTS using source data and store result in source data |
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| 40 | # Do for coarse and fine data |
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| 41 | # Fine pts file to be clipped to area of interest |
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| 42 | #------------------------------------------------------------------------------- |
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| 43 | |
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| 44 | # filenames |
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| 45 | coarsedemname = project.coarsedemname |
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| 46 | finedemname = project.finedemname |
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| 47 | meshname = project.meshname+'.msh' |
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| 48 | |
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| 49 | # coarse data |
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| 50 | convert_dem_from_ascii2netcdf(coarsedemname, use_cache=True, verbose=True) |
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| 51 | dem2pts(coarsedemname, use_cache=True, verbose=True) |
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| 52 | |
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| 53 | # fine data (clipping the points file to smaller area) |
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| 54 | convert_dem_from_ascii2netcdf(finedemname, use_cache=True, verbose=True) |
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| 55 | dem2pts(finedemname, |
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| 56 | easting_min=project.eastingmin, |
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| 57 | easting_max=project.eastingmax, |
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| 58 | northing_min=project.northingmin, |
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| 59 | northing_max= project.northingmax, |
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| 60 | use_cache=True, |
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| 61 | verbose=True) |
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| 62 | |
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| 63 | # combining the coarse and fine data |
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| 64 | combine_rectangular_points_files(project.finedemname + '.pts', |
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| 65 | project.coarsedemname + '.pts', |
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| 66 | project.combineddemname + '.pts') |
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| 67 | |
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| 68 | #from pmesh.create_mesh import create_mesh_from_regions |
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| 69 | #new interface |
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| 70 | from pmesh.mesh_interface import create_mesh_from_regions |
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| 71 | |
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| 72 | # original issue to Benfield |
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| 73 | interior_res = 5000 |
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| 74 | interior_regions = [[project.harbour_polygon_2, interior_res], |
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| 75 | [project.botanybay_polygon_2, interior_res]] |
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| 76 | |
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| 77 | # used for finer mesh |
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| 78 | #interior_res1 = 5000 |
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| 79 | #interior_res2 = 315 |
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| 80 | #interior_regions = [[project.newpoly1, interior_res1], |
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| 81 | # [project.south1, interior_res1], |
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| 82 | # [project.finepolymanly, interior_res2], |
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| 83 | # [project.finepolyquay, interior_res2]] |
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| 84 | |
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| 85 | # used for coastal polygons constructed by GIS guys |
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| 86 | def get_polygon_from_file(filename): |
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| 87 | """ Function to read in output from GIS determined polygon |
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| 88 | """ |
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| 89 | fid = open(filename) |
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| 90 | lines = fid.readlines() |
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| 91 | fid.close() |
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| 92 | |
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| 93 | polygon = [] |
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| 94 | for line in lines[1:]: |
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| 95 | fields = line.split(',') |
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| 96 | x = float(fields[1]) |
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| 97 | y = float(fields[2]) |
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| 98 | polygon.append([x, y]) |
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| 99 | |
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| 100 | return polygon |
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| 101 | |
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| 102 | num_polygons = 9 |
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| 103 | fileext = '.csv' |
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| 104 | filename = project.polygonptsfile |
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| 105 | |
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| 106 | #interior_res = 1000 |
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| 107 | #interior_regions = [] |
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| 108 | #bounding_polygon = project.diffpolygonall#project.demopoly |
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| 109 | #count = 0 |
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| 110 | #for p in range(1, num_polygons+1): |
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| 111 | # thefilename = filename + str(p) + fileext |
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| 112 | # print 'reading in polygon points', thefilename |
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| 113 | # interior_polygon = get_polygon_from_file(thefilename) |
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| 114 | # interior_regions.append([interior_polygon, interior_res]) |
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| 115 | # n = len(interior_polygon) |
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| 116 | # # check interior polygon falls in bounding polygon |
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| 117 | # if len(inside_polygon(interior_polygon, bounding_polygon, |
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| 118 | # closed = True, verbose = False)) <> len(interior_polygon): |
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| 119 | # print 'WARNING: interior polygon %d is outside bounding polygon' %(p) |
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| 120 | # count += 1 |
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| 121 | # # check for duplicate points in interior polygon |
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| 122 | |
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| 123 | print 'number of interior polygons: ', len(interior_regions) |
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| 124 | #if count == 0: print 'interior polygons OK' |
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| 125 | |
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| 126 | #FIXME: Fix caching of this one once the mesh_interface is ready |
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| 127 | from caching import cache |
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| 128 | |
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| 129 | # original + refined region |
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| 130 | _ = cache(create_mesh_from_regions, |
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| 131 | #project.demopoly, |
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| 132 | project.diffpolygonall2, |
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| 133 | #{'boundary_tags': {'bottom': [0], |
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| 134 | # 'right1': [1], 'right0': [2], |
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| 135 | # 'right2': [3], 'top': [4], 'left1': [5], |
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| 136 | # 'left2': [6], 'left3': [7]}, |
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| 137 | {'boundary_tags': {'bottom': [0], |
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| 138 | 'bottom1': [1], 'right': [2], |
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| 139 | 'top1': [3], 'top': [4], 'left1': [5], |
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| 140 | 'left2': [6], 'left3': [7]}, |
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| 141 | #{'boundary_tags': {'bottom': [0], 'right': [1], |
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| 142 | # 'top': [2], 'left': [3]}, |
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| 143 | 'maximum_triangle_area': 100000, |
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| 144 | 'filename': meshname, |
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| 145 | 'interior_regions': interior_regions}, |
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| 146 | verbose = True) |
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| 147 | |
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| 148 | #------------------------------------------------------------------------------- |
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| 149 | # Setup computational domain |
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| 150 | #------------------------------------------------------------------------------- |
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| 151 | |
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| 152 | domain = pmesh_to_domain_instance(meshname, Domain, |
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| 153 | use_cache = True, |
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| 154 | verbose = True) |
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| 155 | |
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| 156 | print 'Number of triangles = ', len(domain) |
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| 157 | print 'The extent is ', domain.get_extent() |
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| 158 | print domain.statistics() |
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| 159 | |
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| 160 | domain.set_name(project.basename) |
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| 161 | domain.set_datadir(project.outputdir) |
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| 162 | domain.set_quantities_to_be_stored(['stage', 'xmomentum', 'ymomentum']) |
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| 163 | |
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| 164 | |
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| 165 | #------------------------------------------------------------------------------- |
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| 166 | # Set up scenario (tsunami_source is a callable object used with set_quantity) |
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| 167 | #------------------------------------------------------------------------------- |
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| 168 | |
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| 169 | tsunami_source = slump_tsunami(length=30000.0, |
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| 170 | depth=400.0, |
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| 171 | slope=6.0, |
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| 172 | thickness=176.0, |
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| 173 | radius=3330, |
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| 174 | dphi=0.23, |
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| 175 | x0=project.slump_origin2[0], |
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| 176 | y0=project.slump_origin2[1], |
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| 177 | alpha=0.0, |
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| 178 | domain=domain, |
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| 179 | verbose=True) |
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| 180 | |
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| 181 | #------------------------------------------------------------------------------- |
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| 182 | # Setup initial conditions |
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| 183 | #------------------------------------------------------------------------------- |
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| 184 | |
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| 185 | # apply slump after 30 mins, initialise to water level of tide = 0 |
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| 186 | domain.set_quantity('stage', 0.0) |
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| 187 | domain.set_quantity('friction', 0.04) |
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| 188 | domain.set_quantity('elevation', |
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| 189 | filename = project.combineddemname + '.pts', |
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| 190 | use_cache = True, |
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| 191 | verbose = True) |
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| 192 | |
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| 193 | |
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| 194 | #------------------------------------------------------------------------------- |
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| 195 | # Setup boundary conditions (all reflective) |
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| 196 | #------------------------------------------------------------------------------- |
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| 197 | |
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| 198 | print 'Available boundary tags', domain.get_boundary_tags() |
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| 199 | |
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| 200 | Br = Reflective_boundary(domain) |
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| 201 | Bd = Dirichlet_boundary([0, 0, 0]) |
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| 202 | |
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| 203 | # original + refined regions |
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| 204 | #domain.set_boundary( {'bottom': Br, 'right1': Br, 'right0': Br, |
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| 205 | # 'right2': Br, 'top': Br, 'left1': Br, |
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| 206 | # 'left2': Br, 'left3': Br} ) |
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| 207 | # for new tests 4 April 2006 |
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| 208 | #domain.set_boundary( {'bottom': Br, 'bottom1': Br, 'right': Br, |
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| 209 | # 'top1': Br, 'top': Br, 'left1': Br, |
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| 210 | # 'left2': Br, 'left3': Br} ) |
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| 211 | |
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| 212 | # enforce Dirichlet BC - from 30/03/06 Benfield visit |
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| 213 | domain.set_boundary( {'bottom': Bd, 'bottom1': Bd, 'right': Bd, |
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| 214 | 'top1': Bd, 'top': Bd, 'left1': Bd, |
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| 215 | 'left2': Bd, 'left3': Bd} ) |
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| 216 | |
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| 217 | # increasingly finer interior regions |
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| 218 | #domain.set_boundary( {'bottom': Bd, 'right': Bd, 'left': Bd, 'top': Bd} ) |
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| 219 | |
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| 220 | |
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| 221 | #------------------------------------------------------------------------------- |
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| 222 | # Evolve system through time |
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| 223 | #------------------------------------------------------------------------------- |
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| 224 | |
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| 225 | import time |
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| 226 | t0 = time.time() |
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| 227 | thisfile = project.integraltimeseries+'.csv' |
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| 228 | fid = open(thisfile, 'w') |
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| 229 | |
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| 230 | # save every 10 secs leading up to slump initiation |
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| 231 | for t in domain.evolve(yieldstep = 10, finaltime = 60): # 6 steps |
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| 232 | domain.write_time() |
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| 233 | domain.write_boundary_statistics(tags = 'bottom') |
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| 234 | # calculate integral |
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| 235 | thisstagestep = domain.get_quantity('stage') |
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| 236 | s = '%.2f, %.2f\n' %(t, thisstagestep.get_integral()) |
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| 237 | fid.write(s) |
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| 238 | # add slump after 30 secs |
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| 239 | if allclose(t, 30): |
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| 240 | slump = Quantity(domain) |
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| 241 | slump.set_values(tsunami_source) |
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| 242 | domain.set_quantity('stage', slump + thisstagestep) |
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| 243 | #test_stage = domain.get_quantity('stage') |
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| 244 | #test_elevation = domain.get_quantity('elevation') |
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| 245 | #test_depth = test_stage - test_elevation |
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| 246 | #test_max = max(test_depth.get_values()) |
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| 247 | #print 'testing', test_max |
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| 248 | |
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| 249 | import sys; sys.exit() |
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| 250 | |
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| 251 | # save every two minutes leading up to interesting period |
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| 252 | for t in domain.evolve(yieldstep = 120, finaltime = 660, # steps |
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| 253 | skip_initial_step = True): |
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| 254 | domain.write_time() |
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| 255 | domain.write_boundary_statistics(tags = 'bottom') |
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| 256 | # calculate integral |
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| 257 | thisstagestep = domain.get_quantity('stage') |
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| 258 | s = '%.2f, %.2f\n' %(t, thisstagestep.get_integral()) |
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| 259 | fid.write(s) |
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| 260 | |
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| 261 | |
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| 262 | # save every thirty secs during interesting period |
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| 263 | for t in domain.evolve(yieldstep = 60, finaltime = 5000, # steps |
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| 264 | skip_initial_step = True): |
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| 265 | domain.write_time() |
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| 266 | domain.write_boundary_statistics(tags = 'bottom') #quantities = 'stage') |
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| 267 | # calculate integral |
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| 268 | thisstagestep = domain.get_quantity('stage') |
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| 269 | s = '%.2f, %.2f\n' %(t, thisstagestep.get_integral()) |
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| 270 | fid.write(s) |
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| 271 | |
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| 272 | |
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| 273 | import sys; sys.exit() |
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| 274 | # save every two mins for next 5000 secs |
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| 275 | for t in domain.evolve(yieldstep = 120, finaltime = 10000, # about 42 steps |
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| 276 | skip_initial_step = True): |
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| 277 | domain.write_time() |
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| 278 | domain.write_boundary_statistics(tags = 'bottom') #quantities = 'stage') |
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| 279 | # calculate integral |
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| 280 | thisstagestep = domain.get_quantity('stage') |
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| 281 | s = '%.2f, %.2f\n' %(t, thisstagestep.get_integral()) |
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| 282 | fid.write(s) |
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| 283 | |
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| 284 | # save every half hour to end of simulation |
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| 285 | for t in domain.evolve(yieldstep = 1800, finaltime = 10*60*60, # 14 steps |
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| 286 | skip_initial_step = True): |
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| 287 | domain.write_time() |
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| 288 | domain.write_boundary_statistics(tags = 'bottom') #quantities = 'stage' |
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| 289 | # calculate integral |
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| 290 | thisstagestep = domain.get_quantity('stage') |
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| 291 | s = '%.2f, %.2f\n' %(t, thisstagestep.get_integral()) |
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| 292 | fid.write(s) |
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| 293 | |
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| 294 | print 'That took %.2f seconds' %(time.time()-t0) |
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