/[escript]/trunk/doc/examples/cookbook/heatrefraction_mesher001.py
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Revision 2597 - (hide annotations)
Thu Aug 6 03:30:09 2009 UTC (9 years, 11 months ago) by ahallam
Original Path: trunk/doc/cookbook/heatrefraction_mesher001.py
File MIME type: text/x-python
File size: 3163 byte(s)
Updates to: cookbook documentation; heat refraction problems; mencoder investigation for *.png animation
1 ahallam 2588
2     ########################################################
3     #
4     # Copyright (c) 2003-2009 by University of Queensland
5     # Earth Systems Science Computational Center (ESSCC)
6     # http://www.uq.edu.au/esscc
7     #
8     # Primary Business: Queensland, Australia
9     # Licensed under the Open Software License version 3.0
10     # http://www.opensource.org/licenses/osl-3.0.php
11     #
12     ########################################################
13    
14     __copyright__="""Copyright (c) 2003-2009 by University of Queensland
15     Earth Systems Science Computational Center (ESSCC)
16     http://www.uq.edu.au/esscc
17     Primary Business: Queensland, Australia"""
18     __license__="""Licensed under the Open Software License version 3.0
19     http://www.opensource.org/licenses/osl-3.0.php"""
20     __url__="https://launchpad.net/escript-finley"
21    
22     """
23     Author: Antony Hallam antony.hallam@uqconnect.edu.au
24     """
25    
26 ahallam 2597 from esys.pycad import * #domain constructor
27     from esys.pycad.gmsh import Design #Finite Element meshing package
28     from esys.finley import MakeDomain #Converter for escript
29     import os #file path tool
30     import numpy as np #numerial python for arrays
31     from math import * # math package
32     #used to construct polygons for plotting from pycad
33     from cblib import getLoopCoords
34 ahallam 2588
35 ahallam 2597 #set modal to 1 for a syncline or -1 for an anticline structural
36     #configuration
37     modal=1
38 ahallam 2588
39 ahallam 2597 # the folder to put our outputs in, leave blank "" for script path -
40     # note this folder path must exist to work
41     save_path = "data/heatrefrac001"
42    
43 ahallam 2588 # Overall Domain
44     p0=Point(0.0, 0.0, 0.0)
45     p1=Point(0.0, -6000.0, 0.0)
46     p2=Point(5000.0, -6000.0, 0.0)
47     p3=Point(5000.0, 0.0, 0.0)
48    
49     l01=Line(p0, p1)
50     l12=Line(p1, p2)
51     l23=Line(p2, p3)
52     l30=Line(p3, p0)
53    
54     c=CurveLoop(l01, l12, l23, l30)
55    
56     # Material Boundary
57    
58 ahallam 2597 x=[ Point(i*100.0,-2500+modal*1500.*cos(pi*i*100.0/2500.0+pi)) for i in range(0,51) ]
59 ahallam 2588 mysp = Spline(*tuple(x))
60     x1=Spline.getStartPoint(mysp)
61     x2=Spline.getEndPoint(mysp)
62    
63     # TOP BLOCK
64     tbl1=Line(p0,x1)
65     tbl2=mysp
66     tbl3=Line(x2,p3)
67     tblockloop = CurveLoop(tbl1,tbl2,tbl3,l30)
68     tblock = PlaneSurface(tblockloop)
69    
70 ahallam 2597 tpg = getLoopCoords(tblockloop)
71     np.savetxt(os.path.join(save_path,"toppg"),tpg,delimiter=" ")
72 ahallam 2588
73     # BOTTOM BLOCK
74     bbl1=Line(x1,p1)
75     bbl3=Line(p2,x2)
76     bbl4=-mysp
77     bblockloop = CurveLoop(bbl1,l12,bbl3,bbl4)
78     bblock = PlaneSurface(bblockloop)
79    
80 ahallam 2597 #clockwise check as splines must be set as polygons in the point order
81     #they were created. Otherwise get a line across plot.
82 ahallam 2588 bblockloop2=CurveLoop(mysp,Line(x2,p2),Line(p2,p1),Line(p1,x1))
83 ahallam 2597 bpg = getLoopCoords(bblockloop2)
84     np.savetxt(os.path.join(save_path,"botpg"),bpg,delimiter=" ")
85 ahallam 2588
86     # Create a Design which can make the mesh
87     d=Design(dim=2, element_size=200)
88 ahallam 2597 # Add the subdomains and flux boundaries.
89 ahallam 2588 d.addItems(PropertySet("top",tblock),PropertySet("bottom",bblock),PropertySet("linebottom",l12))
90     # Create the geometry, mesh and Escript domain
91 ahallam 2597 d.setScriptFileName(os.path.join(save_path,"heatrefraction_mesh001.geo"))
92 ahallam 2588
93 ahallam 2597 d.setMeshFileName(os.path.join(save_path,"heatrefraction_mesh001.msh"))
94 ahallam 2588 domain=MakeDomain(d, integrationOrder=-1, reducedIntegrationOrder=-1, optimizeLabeling=True)
95     # Create a file that can be read back in to python with mesh=ReadMesh(fileName)
96 ahallam 2597 domain.write(os.path.join(save_path,"heatrefraction_mesh001.fly"))
97 ahallam 2588
98    

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