/[escript]/trunk/doc/examples/cookbook/example10c_1.py
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Revision 3195 - (hide annotations)
Wed Sep 22 00:28:04 2010 UTC (8 years, 7 months ago) by ahallam
Original Path: trunk/doc/examples/cookbook/example10c.py
File MIME type: text/x-python
File size: 2602 byte(s)
Shortened runtime of cookbook examples to aid testing.
1 ahallam 3135
2     ########################################################
3     #
4     # Copyright (c) 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) 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     ############################################################FILE HEADER
27     # example10a.py
28     # Model of gravitational Potential.
29    
30     #######################################################EXTERNAL MODULES
31     # To solve the problem it is necessary to import the modules we require.
32     from esys.escript import * # This imports everything from the escript library
33     from esys.escript.unitsSI import *
34     from esys.escript.linearPDEs import LinearPDE # This defines LinearPDE as LinearPDE
35     from esys.finley import ReadMesh
36     import os, sys #This package is necessary to handle saving our data.
37    
38     ########################################################MPI WORLD CHECK
39     if getMPISizeWorld() > 1:
40     import sys
41     print "This example will not run in an MPI world."
42     sys.exit(0)
43    
44     #################################################ESTABLISHING VARIABLES
45     G=6.67300*10E-11
46    
47     ################################################ESTABLISHING PARAMETERS
48     #the folder to put our outputs in, leave blank "" for script path
49     save_path= os.path.join("data","example10")
50     #ensure the dir exists
51     mkDir(save_path)
52    
53     ####################################################DOMAIN CONSTRUCTION
54     domain=ReadMesh(os.path.join(save_path,'fault.fly')) # create the domain
55     x=Solution(domain).getX()
56     rho=Scalar(0,Function(domain))
57     rho.setTaggedValue("xx",500.)
58     rho.setTaggedValue("limestone",0.0)
59     rho.setTaggedValue("fault",1200.)
60    
61     kro=kronecker(domain)
62    
63     q=whereZero(x[2])#-sup(x[2]))
64     ###############################################ESCRIPT PDE CONSTRUCTION
65    
66     mypde=LinearPDE(domain)
67     mypde.setValue(A=kro,Y=4.*3.1415*G*rho,q=q,r=0)
68     sol=mypde.getSolution()
69     saveVTK(os.path.join(save_path,"ex10c.vtu"),\
70     grav_pot=sol,\
71     g_field=-grad(sol),\
72     g_fieldz=-grad(sol)*[0,0,1],\
73 ahallam 3195 gz=length(-grad(sol)*[0,0,1]),\
74     fault=rho)

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