On Wed, 2009-09-16 at 15:33 +0200, Till Heinemann wrote: > Hello! > > I have a specific problem, where I want to combine a boundary element > integration and a finite element integration on one domain. > > I was going to use two different triangulations for this (is this at > all necessary?). > > The BEM is supposed to share displacement variables at the vertices > the two domains coincide on (i.e. the boundary nodes). > > So my idea was to create a dim and a dim-1 triangulation (and > dofhandlers, fes…) and somehow use the dof_handler to exchange this > displacement variable information. > > The next difficulty would be assembling and solving a common system of > equations to be solved for all the dofs appearing in the 2 systems, > which would resolve in combining a full matrix from BEM and a sparse > matrix from FEM – given respect to the size of the FEM matrix, I think > it may still be advantageous to use a sparse matrix representation of > the combined system matrix? > > So I’m not asking you to solve my problem for me, but maybe someone > has already attempted sth similar and can tell me if I’m thinking in > the right direction here or if there’s a simpler / more efficient > approach to it – or he knows why my ideas won’t work. > > Where can I find more information on this whole problem, which > examples may treat aspects of this?
You might look at Elmer, which can solve coupled BEM/FEM problems (though I can't say I have direct experience in using this capability). -Adam -- GPG fingerprint: D54D 1AEE B11C CE9B A02B C5DD 526F 01E8 564E E4B6 Engineering consulting with open source tools http://www.opennovation.com/
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