Re: [Libmesh-users] Errors on mesh with edge BCs

[Paul T. B. <ptb...@gm...>]

> On Apr 24, 2015, at 12:00 AM, David Knezevic <dav...@ak...> wrote:
> 
> I'd like to be able to impose boundary conditions on an edge. We added
> support for this in libMesh, but the only way I could come up with for
> creating edge BCs in a mesh generator is to:

Two ideas, neither of which I've tested:

1. You ought to be able to select curves in Cubit (IIRC you were using this one?) when building side sets. You probably already tried this, but wanted to be doubly sure. Does it dump them from the sideset because it's not a face?

2. I've looked at the code in libmesh, but again haven't tested, but if you only need nodal dofs constrained, you could create a node set and treat it like a boundary id. The libmesh code looked like it effectively treated node sets like side sets. Maybe you could use this too to find non-nodal dofs on the edge and add them to the node set once it's been created?

I'll also have a quick look later this morning at the bug you found.