/[escript]/trunk/doc/examples/helmholtz.py
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Contents of /trunk/doc/examples/helmholtz.py

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Revision 1387 - (show annotations)
Fri Jan 11 07:45:26 2008 UTC (11 years, 1 month ago) by trankine
Original Path: temp/doc/examples/helmholtz.py
File MIME type: text/x-python
File size: 652 byte(s)
Restore the trunk that existed before the windows changes were committed to the (now moved to branches) old trunk.
1 # $Id$
2 from esys.escript import *
3 from esys.escript.linearPDEs import LinearPDE
4 from esys.finley import Rectangle
5 #... set some parameters ...
6 kappa=1.
7 omega=0.1
8 eta=10.
9 #... generate domain ...
10 mydomain = Rectangle(l0=5.,l1=1.,n0=50, n1=10)
11 #... open PDE and set coefficients ...
12 mypde=LinearPDE(mydomain)
13 mypde.setSymmetryOn()
14 n=mydomain.getNormal()
15 x=mydomain.getX()
16 mypde.setValue(A=kappa*kronecker(mydomain),D=omega,Y=omega*x[0], \
17 d=eta,y=kappa*n[0]+eta*x[0])
18 #... calculate error of the PDE solution ...
19 u=mypde.getSolution()
20 print "error is ",Lsup(u-x[0])
21 # output should be similar to "error is 1.e-7"
22 saveVTK("x0.xml",sol=u)
23

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