Hi Stéphane,
Is it possible to use two overlapping meshes and to project information from one mesh to the other one ? Since this question is unclear, here is an example:
1) Suppose I have two meshes:
- a first one covering a certain volume,
- a second identical to the first but with an extension so that it covers a bigger volume. In the common region, element, nodes positions and numbering are identical.
2) I would like to solve a physical problem on the first mesh and use the results as data for the second physical problem (solved on the second mesh). I think it would involve somesthing like this :
mesh M1 = read(gmsh,"small mesh.msh");
mesh M2 = read(gmsh,"large mesh.msh");
// Initial values
femfunction t1(M1)=0;
femfunction t2(M2)=0;
//.. solve a first problem on M1 to get t1
//then
t2=t1; //Projection of t1 on t2 on the common part
//.. solve a second problem using t2 as property
One of the problem, I think is to define the value on the non-common region (a constant value would be OK).
Is it possible with ff3d?
Thanks,
Dominique.