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 | xslope = 5.0 # Distance between the boundary ande the start of the slope |
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9 | |
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10 | |
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11 | def generate(mesh_filename, maximum_triangle_area=0.01): |
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12 | """ |
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13 | Generate mesh for University of Aberbeen dam break flume. |
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14 | The gate position is the distance from the right wall of the wave tank |
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15 | to the gate. |
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16 | |
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17 | """ |
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18 | #Basic geometry |
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19 | global xslope |
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20 | |
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21 | xright = 19.0 |
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22 | ybottom = 0 |
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23 | ytop = 1.00 |
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24 | xleft = 0.0 |
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25 | ###xslope = slope |
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26 | |
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27 | #Outline |
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28 | point_sw = [xleft, ybottom] |
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29 | point_se = [xright, ybottom] |
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30 | point_nw = [xleft, ytop] |
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31 | point_ne = [xright, ytop] |
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32 | |
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33 | |
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34 | # slope seperation (middle) |
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35 | point_slope_top = [xslope, ytop] |
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36 | point_slope_bottom = [xslope, ybottom] |
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37 | |
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38 | m = Mesh() |
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39 | |
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40 | #Boundary |
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41 | points = [point_sw, #se |
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42 | point_nw, |
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43 | point_slope_top, |
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44 | point_ne, |
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45 | point_se, |
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46 | point_slope_bottom |
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47 | ] |
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48 | |
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49 | segments = [ |
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50 | [0,1], |
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51 | [1,2], |
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52 | [2,3], |
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53 | [3,4], |
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54 | [4,5], |
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55 | [5,0], #The outer border |
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56 | [2,5] # slope separator |
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57 | ] |
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58 | |
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59 | segment_tags = {'wall':[1,2,3,4,5], |
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60 | 'wave':[0]} # '':[6] |
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61 | |
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62 | m.add_points_and_segments(points, segments, segment_tags) |
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63 | |
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64 | dam = m.add_region(xslope - 0.0000001,(ytop - ybottom)/2) |
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65 | # this is the location of the reservoir region. |
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66 | dam.setTag("flat") |
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67 | |
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68 | slope = m.add_region(xslope + 0.0000001,(ytop - ybottom)/2) |
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69 | # this is the location of the slope region. |
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70 | slope.setTag("slope") |
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71 | |
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72 | m.generate_mesh(maximum_triangle_area=maximum_triangle_area) |
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73 | |
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74 | m.export_mesh_file(mesh_filename) |
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75 | print "mesh created" |
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76 | |
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77 | #------------------------------------------------------------- |
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78 | if __name__ == "__main__": |
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79 | generate("aa.tsh") |
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