[5073] | 1 | """Create mesh for University of Queensland dam break flume |
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| 2 | """ |
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| 3 | |
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| 4 | |
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| 5 | from anuga.pmesh.mesh import * |
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| 6 | from anuga.coordinate_transforms.geo_reference import Geo_reference |
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| 7 | |
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| 8 | |
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| 9 | def generate(mesh_filename, maximum_triangle_area=0.01): |
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| 10 | """ |
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| 11 | Generate mesh for University of Aberbeen dam break flume. |
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| 12 | The gate position is the distance from the right wall of the wave tank |
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| 13 | to the gate. |
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| 14 | |
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| 15 | """ |
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[5084] | 16 | |
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[5073] | 17 | #Basic geometry |
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| 18 | xright = 19.0 |
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| 19 | ybottom = 0 |
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| 20 | ytop = 0.45 |
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| 21 | xleft = 0.0 |
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| 22 | xslope = 4.0 |
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| 23 | |
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| 24 | #Outline |
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| 25 | point_sw = [xleft, ybottom] |
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| 26 | point_se = [xright, ybottom] |
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| 27 | point_nw = [xleft, ytop] |
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| 28 | point_ne = [xright, ytop] |
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| 29 | |
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| 30 | |
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| 31 | # slope seperation (middle) |
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| 32 | point_slope_top = [xslope, ytop] |
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| 33 | point_slope_bottom = [xslope, ybottom] |
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| 34 | |
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| 35 | m = Mesh() |
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| 36 | |
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| 37 | #Boundary |
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| 38 | points = [point_sw, #se |
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| 39 | point_nw, |
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| 40 | point_slope_top, |
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| 41 | point_ne, |
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| 42 | point_se, |
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| 43 | point_slope_bottom |
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| 44 | ] |
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| 45 | |
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| 46 | segments = [ |
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| 47 | [0,1], |
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| 48 | [1,2], |
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| 49 | [2,3], |
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| 50 | [3,4], |
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| 51 | [4,5], |
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| 52 | [5,0], #The outer border |
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| 53 | [2,5] # slope separator |
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| 54 | ] |
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| 55 | |
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| 56 | segment_tags = {'wall':[1,2,3,4,5], |
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| 57 | 'wave':[0]} # '':[6] |
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| 58 | |
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| 59 | m.add_points_and_segments(points, segments, segment_tags) |
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| 60 | |
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| 61 | dam = m.add_region(xslope - 0.0000001,(ytop - ybottom)/2) |
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| 62 | # this is the location of the reservoir region. |
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| 63 | dam.setTag("flat") |
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| 64 | |
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| 65 | slope = m.add_region(xslope + 0.0000001,(ytop - ybottom)/2) |
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| 66 | # this is the location of the slope region. |
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| 67 | slope.setTag("slope") |
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| 68 | |
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| 69 | m.generate_mesh(maximum_triangle_area=maximum_triangle_area) |
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| 70 | |
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| 71 | m.export_mesh_file(mesh_filename) |
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| 72 | print "mesh created" |
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| 73 | |
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| 74 | #------------------------------------------------------------- |
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| 75 | if __name__ == "__main__": |
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| 76 | generate("aa.tsh") |
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