John mentioned about MOOSE library, which is built on top of libmesh. Does MOOSE library make use of "libMesh::DifferentiablePhysics" class? It seems MOOSE library can deal with the multi-physics problems with dynamic mesh in libmesh library quite well. By the way, while sub-dividing an element based on the coordinates extracted by "elem->point()", I noticed that the truncation error of the coordinates of element nodes is relative large. Please correct me, if I am wrong about this. Could it be the reason to affect the convergence rate?
Best Bin ________________________________ From: Stogner, Roy H <royst...@ices.utexas.edu> Sent: Saturday, January 11, 2020 6:41 AM To: Bin Liu <learninglibm...@hotmail.com> Cc: libmesh-users@lists.sourceforge.net <libmesh-users@lists.sourceforge.net> Subject: Re: [Libmesh-users] ALE formulation with moving mesh On Fri, 10 Jan 2020, Bin Liu wrote: > I find that libmesh indeed has a class > "libMesh::DifferentiablePhysics" to deal with ALE formulation. On top of what John said, I need to confess that the DifferentiablePhysics ALE code was never properly finished. I got it to a state where it was running but didn't seem to be passing convergence tests, then the physics people on our project discovered a quasi-steady formulation which would work even better than our previous unsteay model, and so I didn't have any more time to devote to *fixing* the ALE code. --- Roy _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
