Off topic - Some advice on solving Navier-Stokes with Finite Difference

: http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090812/3b43319f/attachment.htm

Off topic - Some advice on solving Navier-Stokes with Finite Difference

Hi Shengyong, Thanks for the suggestion. Of course we know about the staggered grid method, but it is a research work and she is working to improve the method without using the staggered grid. Any suggestion would be welcome (maybe via private email). Again sorry for this off-topic post.

methods on adjacency matrix

Hi, I'm trying to minimize my code managing a finite element mesh and thought of using the adjacency matrix type. Is there a list of methods working on this matrix type anywhere in the documentation? I want to store the node-to-element information in such a matrix and then use the

methods on adjacency matrix

for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -- next part -- An HTML attachment was scrubbed... URL: http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090812/35a95450

porting petsc to a nec sx9 computer running under unix super ux

Please send configure.log to petsc-maint - not the mailing list. Why use petsc-2.3.2-p3 - instead of the latest petsc-3.0.0? On Wed, 12 Aug 2009, Joel Guerrero wrote: Hi Satish, I am trying to compile petsc using the following configuration, ./config/configure.py

Off topic - Some advice on solving Navier-Stokes with Finite Difference

Shengyong wrote: Hi, Farshid Maybe she should use the staggered grid method which is very simple to implement. Does it remain simple for curvilinear meshes? Stephen On Tue, Aug 11, 2009 at 5:16 AM, Farshid Mossaiby mossaiby at yahoo.com mailto:mossaiby at yahoo.com wrote: Hi all,

Off topic - Some advice on solving Navier-Stokes with FiniteDifference

Stephen, There are two ways that I know of to deal with pressure checker boarding: staggered grids or some form of Rhie-Chow interpolation. IMO, these are simple only for uniform, Cartesian grids. For grids that are curvilinear, unstructured, non-uniform, and/or non-orthogonal, things get real

Off topic - Some advice on solving Navier-Stokes with FiniteDifference

more interesting than any results to which their experiments lead. -- Norbert Wiener -- next part -- An HTML attachment was scrubbed... URL: http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090812/372a536d/attachment.htm

Off topic - Some advice on solving Navier-Stokes with FiniteDifference

Matthew Knepley wrote: 1) You should really handle this by creating the constant vector on the pressure space and using MatNullSpaceCreate() 2) You can also easily handle this by fixing the pressure at one point At what indices or location does one fix the pressure? What value is it

Off topic - Some advice on solving Navier-Stokes with FiniteDifference

Wiener -- next part -- An HTML attachment was scrubbed... URL: http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090812/e7129f1c/attachment-0001.htm

methods on adjacency matrix

On Aug 12, 2009, at 8:47 AM, Matthew Knepley wrote: All the matrices have the same interface. Adj is just a different storage format. Yes, but very few methods are implemented for that type. It is there to support calls to partitioning packages. The function table is in

AO scalability issue

part -- An HTML attachment was scrubbed... URL: http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090812/45c066e9/attachment.htm