Hmm it sounds like if this works as intended, the LaplaceMeshSmoother could be used for some of our ALE calculations to avoid problems like negative Jacobians. Whenever we’ve talked about remeshing in MOOSE we’ve discussed it as if we’ll need mesh generation software like gmshs new C++ API or triangle or tetgen. Seems like we could get by with this existing capability in a lot of our cases...
> On Jun 21, 2019, at 9:12 AM, John Peterson <jwpeter...@gmail.com> wrote: > >> On Fri, Jun 21, 2019 at 9:36 AM 서승진 <tjtmdwls1...@gmail.com> wrote: >> >> I tried to use the smoother after reading your email, and it seems that >> the LaplaceMeshSmoother is quitely similar with smooth function in >> MeshTools::Modification namespace. >> >> After trying this, I found a new problem. >> >> As you said, boundary nodes are not moved. >> >> However, internal nodes escape from its domain, and as you said, it seems >> that they ingnore the boundary nodes... >> > > Are you still running the smoother for 1000 iterations as in the original > code snippet you posted? That may be causing an issue, as I don't think > I've ever tested Laplace smoothing for more than about 2 iterations. Note > that even though boundary nodes are not moved, they should still be > accounted for in the "averaging" process of the smoother, and therefore > nodes should not be able to go outside the domain. Theoretically I think > it's possible for Laplace mesh smoothing to send points outside the domain > for non-convex geometries, though off the top of my head I can't really > construct a case where this would happen for Quad4s... and I don't think > you have a non-convex domain (?) so I'm not really clear on how your > internal nodes are escaping. > > -- > John > > _______________________________________________ > Libmesh-users mailing list > Libmesh-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/libmesh-users _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
