On Mon, 23 Jun 2014, Onur Solmaz wrote:
> First, I wanted to ask whether there has been any development on giving
> Dirichlet boundary conditions node-wise, on irregular meshes.
Yes. If you assign a DirichletBoundary to a particular boundary id,
and you give a node that boundary id, then that d
It has been two years since I last replied to this thread, and again I have
the same problem.
First, I wanted to ask whether there has been any development on giving
Dirichlet boundary conditions node-wise, on irregular meshes. I have been
doing it using MeshData which will be deprecated (actually
It seems that the problem was due to unused nodes which didn't belong to
any element.
mesh.prepare_for_use(false);
Solves the problem in some way, since it jettisons those nodes. I'm going
to need to solve the problem of matching those soln values back to my
original nodes.
Thanks
Onur
Onur
201
Deprecating MeshData would require the methods of UNVIO etc. to be
rewritten. I'm glad I'm not the one to figure out the classes and methods
going to be involved when transferring from a file to an explicitsystem.
As for me, I am using my own function to transfer from my data structures
to the mes
On Tue, 7 Aug 2012, Onur Solmaz wrote:
> I'm using Tet4 elements.
> How do I compile libmesh in debug mode? I couldn't figure out.
Using a Bourne-type shell, "export METHOD=dbg" before you compile
libMesh or run any examples; or just replace "make" with "METHOD=dbg
make".
> I'm using the most r
I'm using Tet4 elements.
How do I compile libmesh in debug mode? I couldn't figure out.
I'm using the most recent svn build by the way.
Onur
2012/8/7 Roy Stogner
>
> On Tue, 7 Aug 2012, Onur Solmaz wrote:
>
> It would be great if there were an example on that ExplicitSystem.
>>
>
> *Definitely
On Tue, 7 Aug 2012, Onur Solmaz wrote:
> It would be great if there were an example on that ExplicitSystem.
*Definitely*. Trouble is finding someone with both the knowhow and
the time to sit back and write it up.
> I also had another weird problem. Would there be a reason that the
> number of
It would be great if there were an example on that ExplicitSystem.
I also had another weird problem. Would there be a reason that the number
of dofs won't be equal to the number of nodes?
It is weird because my program works perfectly fine with my first input
file (n_dofs=n_nodes), but it crashed
On Tue, 7 Aug 2012, Onur Solmaz wrote:
Thanks for the detailed response!
No trouble. Try to hit "Reply to All" rather than just "Reply" to
libmesh messages, though - I like making sure these threads get
archived so Google can help others with similar issues in the future.
Calling Lib
On Tue, 7 Aug 2012, Onur Solmaz wrote:
Calling LibmeshInit in my main function gives me segfaults for obvious reasons.
I'm afraid not obvious to me - all our examples and nearly all my
application codes create a LibMeshInit object in main().
And I can't allocate from the heap:
LibMeshInit *
On Tue, 7 Aug 2012, Onur Solmaz wrote:
I finally did it, however I started to have some other problems. In a short
list:
1. I am trying to call libmesh from another function than main(). This works,
but I'm not sure if this is the best way to do so.
I use fake arguments for LibMeshInit()
i
On Sat, 4 Aug 2012, Onur Solmaz wrote:
FYI the quadrature rule defined for the faces does not get used in example 4
(used in example 3).
QGauss qface(dim-1, FIFTH);
fe_face->attach_quadrature_rule (&qface);
These are the only lines, and removing these does not affect the result.
We used
On Fri, 3 Aug 2012, John Peterson wrote:
> You are mistaken. The quadrature points on the face of the tet will
> not coincide with the nodes of the tet unless you are using
> trapezoidal quadrature.
>
> But I don't think the DirichletBoundary class of Introduction ex4 does
> quadrature. It sets
On Fri, Aug 3, 2012 at 1:13 PM, Onur Solmaz wrote:
> That is what I tried at first, since the quadrature points are the vertices
> of the tetrahedra (If I'm not mistaken).
You are mistaken. The quadrature points on the face of the tet will
not coincide with the nodes of the tet unless you are us
On Fri, Aug 3, 2012 at 2:10 AM, Onur Solmaz wrote:
>
> The problem is that the example (I think) uses the exact solution function
> to impose boundary conditions in the element loop. I couldn't figure out a
> workaround, so I am asking here, how can I impose nodal boundary conditions
> in the asse
Hi
I am having trouble writing a modified version of the assembly function of
Introduction Ex 4. Example 4 demonstrates the method to solve the Poisson
equation.
My domain consists of a 3D unstructured mesh with tetrahedral elements. I
haven't experienced any problems converting my data structures
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