Oh, I see. Sorry, my fault. Thanks for your help. Martin
On Tue, Feb 1, 2011 at 7:20 PM, Wolfgang Bangerth <[email protected]>wrote: > > > I think it is rather an issue of implementation to get the terms > > contributing to the off-diagonal blocks in the mass matrix right. > > Essentially its the velocity basis functions in an inner product with the > > bases coming from the pressure space. > > What Markus is saying that the correct term can not have the form > (phi_u, phi_p) > since the first factor is a vector and the second is a scalar. The result > of > the integration is a vector, but in a bilinear form you need a scalar as a > result. It could be that you need to take a *particular component* of > phi_u, > but that there is no telling without knowing where the problem came from. > As > it stands, the bilinear form you should doesn't make any sense because it > adds scalars and vectors together. > > Best > W. > > ------------------------------------------------------------------------- > Wolfgang Bangerth email: [email protected] > www: > http://www.math.tamu.edu/~bangerth/<http://www.math.tamu.edu/%7Ebangerth/> > > -- *Martin Stoll* *Postdoctoral Research Fellow* Computational Methods in Systems and Control Theory Max Planck Institute for Dynamics of Complex Technical Systems Sandtorstr. 1 D-39106 Magdeburg Germany Email: [email protected] URL : http://www.mpi-magdeburg.mpg.de/people/stollm Tel :+49 391 6110 384
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