/[escript]/trunk/doc/examples/usersguide/darcy.py
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Contents of /trunk/doc/examples/usersguide/darcy.py

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Revision 5288 - (show annotations)
Tue Dec 2 23:18:40 2014 UTC (4 years, 9 months ago) by sshaw
File MIME type: text/x-python
File size: 1933 byte(s)
fixing tests for cases where required domains not built
1 from __future__ import division
2 ##############################################################################
3 #
4 # Copyright (c) 2003-2014 by University of Queensland
5 # http://www.uq.edu.au
6 #
7 # Primary Business: Queensland, Australia
8 # Licensed under the Open Software License version 3.0
9 # http://www.opensource.org/licenses/osl-3.0.php
10 #
11 # Development until 2012 by Earth Systems Science Computational Center (ESSCC)
12 # Development 2012-2013 by School of Earth Sciences
13 # Development from 2014 by Centre for Geoscience Computing (GeoComp)
14 #
15 ##############################################################################
16
17 __copyright__="""Copyright (c) 2003-2014 by University of Queensland
18 http://www.uq.edu.au
19 Primary Business: Queensland, Australia"""
20 __license__="""Licensed under the Open Software License version 3.0
21 http://www.opensource.org/licenses/osl-3.0.php"""
22 __url__="https://launchpad.net/escript-finley"
23
24 from esys.escript import *
25 from esys.escript.models import DarcyFlow
26 try:
27 from esys.finley import Rectangle
28 HAVE_FINLEY = True
29 except ImportError:
30 HAVE_FINLEY = False
31 from esys.weipa import saveVTK
32
33 if not HAVE_FINLEY:
34 print("Finley module not available")
35 else:
36 # generate domain:
37 mydomain = Rectangle(l0=2.,l1=1.,n0=40, n1=20)
38 # normal flux is given
39 x = mydomain.getX()
40
41 # set location of fixed pressure and flux:
42 p_BC=whereZero(x[1]-1.)*wherePositive(x[0]-1.)
43 u_BC=(whereZero(x[0])+whereZero(x[0]-2.)) * [1.,0.] + \
44 (whereZero(x[1]) + whereZero(x[1]-1.)*whereNonPositive(x[0]-1.0)) * [0., 1.]
45
46 # define darcy flow solver:
47 mypde = DarcyFlow(domain=mydomain)
48
49 mypde.setValue(g=[0., 2],
50 location_of_fixed_pressure=p_BC,
51 location_of_fixed_flux=u_BC,
52 permeability=100.)
53
54 u,p=mypde.solve(u0=x[1]*[0., -1.], p0=0)
55
56 # write u to an external file
57 saveVTK("u.vtu",flux=u, pressure=p)
58

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