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Viewing changes to demo/pde/poisson/cpp/main.cpp

  • Committer: Garth N. Wells
  • Date: 2008-03-29 09:34:25 UTC
  • Revision ID: gnw20@cam.ac.uk-20080329093425-3ea2vhjvccq56zvi
Add some basic build & install instructions.

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demo/pde/poisson/cpp/main.cpp
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//
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// and boundary conditions given by
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//
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//     u(x, y)     = 0               for x = 0
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//     du/dn(x, y) = 25 sin(5 pi y)  for x = 1
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//     du/dn(x, y) = 0               otherwise
 
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//     u(x, y)     = 0  for x = 0
 
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//     du/dn(x, y) = 1  for x = 1
 
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//     du/dn(x, y) = 0  otherwise
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#include <dolfin.h>
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#include "Poisson.h"
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  // Solve PDE
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  Function u;
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  pde.set("PDE linear solver", "iterative");
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  pde.solve(u);
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  // Plot solution
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  plot(u);
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  // Save solution to file
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  File file("poisson.pvd");
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  file << u;