fenics team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, Feb 18, 2009 at 09:49:20AM -0600, Brandon Chabaud wrote:
> Hello,
> 
> I am trying to use fenics to solve a 2D elasticity problem defined on the unit
> square.  The boundary is divided into two parts.  Dirichlet boundary conditions
> are applied to one part of the boundary and Neumann conditions are applied to
> the other part.  In my .form file, I have used ds(0) and ds(1) to indicate
> exterior facets on the Dirichlet and Neumann parts, respectively.  I have
> extracted a mesh of the boundary using MeshBoundary.  My question is: How do I
> indicate which parts of the boundary mesh are Dirichlet and which parts are
> Neumann?  Thank you.
> 
> Brandon Chabaud

Take a look at demo/mesh/subdomains/ in DOLFIN and the demos in
demo/pde.

-- 
Anders

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