On Mon, 8 Nov 2010, Saurabh Srivastava wrote:
I am currently using Libmesh to develop a fluid solver for coupling
with particles/structures. I have a few related questions ..
A) Does the reinit() function in equation system classs ..allows
solution to be projected onto new mesh? (as I recall from one of the
example problems)
Yes.
while I use this functionality in conjunction with Hierarchic basis
function on Tri6 elements it seems the library throws an error.
Indeed it does! I can replicate that (seeing an exception in the
ghosted vector support) just by switching ex14 to cubic hierarchics.
I'll look into this ASAP.
Does this projection also work with 3D elements?
It should.
What other alternatives do I have for reinit/projection?
Right now? Nothing. It would be possible to make the current
System::ProjectVector object user-replaceable if you need a projection
with some properties that the default lacks.
B) Does Libmesh provide higher order Hierarchic basis on Tet10? it
seems again the code would breakdown with such a choice, since only
a second order Lagrangian basis is possible on Tet10, I'm interested
in Hierarchic Tets for arbitrary higher order polynomials?
The problem with adaptivity on hierarchic bases is a bug which
(hopefully) should be fixed shortly.
But the lack of hierarchic bases on Tet10 is a missing feature which
won't be implemented until a new developer who needs them puts in the
work. Most of the framework is there (fe_shape_hierarchic_3D.C
supports hexes and fe_shape_hierarchic_2D.C supports simplices in 2D)
but nobody's coded and tested that combination.
I did post this question on user's list but awaiting response yet.
My apologies - I saw your question, didn't have time to get to it that
week, then let it completely slip my mind.
I'll let everyone know as soon as I have that regression pinned down.
---
Roy
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