1 | """Simple water flow example using ANUGA |
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2 | |
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3 | Water driven up a linear slope and time varying boundary, |
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4 | similar to a beach environment |
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5 | """ |
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6 | |
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7 | |
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8 | #------------------------------------------------------------------------------ |
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9 | # Import necessary modules |
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10 | #------------------------------------------------------------------------------ |
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11 | |
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12 | from anuga.abstract_2d_finite_volumes.mesh_factory import rectangular_cross |
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13 | from anuga.shallow_water import Domain |
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14 | from anuga.shallow_water import Reflective_boundary |
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15 | from anuga.shallow_water import Dirichlet_boundary |
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16 | from anuga.shallow_water import Time_boundary |
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17 | from anuga.shallow_water import Transmissive_boundary |
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18 | |
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19 | |
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20 | #------------------------------------------------------------------------------ |
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21 | # Setup computational domain |
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22 | #------------------------------------------------------------------------------ |
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23 | |
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24 | points, vertices, boundary = rectangular_cross(10, 10,len1=1.0, len2= 1.0 ) # Basic mesh |
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25 | |
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26 | domain = Domain(points, vertices, boundary) # Create domain |
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27 | domain.set_name('runup') # Output to file runup.sww |
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28 | domain.set_datadir('.') # Use current directory for output |
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29 | #domain.set_quantities_to_be_stored(['stage',# Store all conserved quantities |
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30 | # 'xmomentum', |
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31 | # 'ymomentum']) |
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32 | |
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33 | |
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34 | #------------------------------------------------------------------------------ |
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35 | # Setup initial conditions |
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36 | #------------------------------------------------------------------------------ |
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37 | |
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38 | def topography(x,y): |
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39 | return -x/2 # linear bed slope |
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40 | #return x*(-(2.0-x)*.5) # curved bed slope |
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41 | |
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42 | domain.set_quantity('elevation', topography) # Use function for elevation |
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43 | domain.set_quantity('friction', 0.1) # Constant friction |
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44 | domain.set_quantity('stage', -.4) # Constant negative initial stage |
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45 | |
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46 | |
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47 | #------------------------------------------------------------------------------ |
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48 | # Setup boundary conditions |
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49 | #------------------------------------------------------------------------------ |
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50 | |
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51 | from math import sin, pi, exp |
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52 | Br = Reflective_boundary(domain) # Solid reflective wall |
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53 | Bt = Transmissive_boundary(domain) # Continue all values on boundary |
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54 | Bd = Dirichlet_boundary([-0.2,0.,0.]) # Constant boundary values |
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55 | Bw = Time_boundary(domain=domain, # Time dependent boundary |
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56 | f=lambda t: [(.1*sin(t*2*pi)-0.3) , 0.0, 0.0]) |
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57 | |
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58 | # Associate boundary tags with boundary objects |
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59 | domain.set_boundary({'left': Br, 'right': Bw, 'top': Br, 'bottom': Br}) |
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60 | |
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61 | #=============================================================================== |
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62 | from anuga.visualiser import RealtimeVisualiser |
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63 | vis = RealtimeVisualiser(domain) |
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64 | vis.render_quantity_height("elevation", zScale=1.0, dynamic=False) |
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65 | vis.render_quantity_height("stage", dynamic=True) |
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66 | vis.colour_height_quantity('stage', (lambda q:q['stage'], -0.5, 0.5)) |
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67 | vis.start() |
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68 | #=============================================================================== |
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69 | |
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70 | import time |
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71 | t0 = time.time() |
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72 | #------------------------------------------------------------------------------ |
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73 | # Evolve system through time |
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74 | #------------------------------------------------------------------------------ |
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75 | |
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76 | for t in domain.evolve(yieldstep = 0.1, finaltime = 10.0): |
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77 | domain.write_time() |
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78 | vis.update() |
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79 | |
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80 | vis.evolveFinished() |
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81 | print 'That took %.2f seconds' %(time.time()-t0) |
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82 | |
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