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# $Id$ |
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from esys.escript import * |
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from esys.escript.linearPDEs import LinearPDE |
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from esys.finley import Rectangle |
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#... set some parameters ... |
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kappa=1. |
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omega=0.1 |
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eta=10. |
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#... generate domain ... |
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mydomain = Rectangle(l0=5.,l1=1.,n0=50, n1=10) |
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#... open PDE and set coefficients ... |
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mypde=LinearPDE(mydomain) |
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mypde.setSymmetryOn() |
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n=mydomain.getNormal() |
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x=mydomain.getX() |
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mypde.setValue(A=kappa*kronecker(mydomain),D=omega,Y=omega*x[0], \ |
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d=eta,y=kappa*n[0]+eta*x[0]) |
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#... calculate error of the PDE solution ... |
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u=mypde.getSolution() |
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print "error is ",Lsup(u-x[0]) |
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# output should be similar to "error is 1.e-7" |
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saveVTK("x0.xml",sol=u) |
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