Visit and VTK
Posted: 20 Jul 2010, 04:09
Hello all,
I'm very excited to use the Elmer package, particularly since it is a free, open source alternative to other FEM packages. As a beginner, I am going through the tutorials, and would like to use VISIT as a visualization tool, since (correct me if I'm wrong) it offers more in terms of versatility than ElmerPost.
In particular, I am interested in FSI, so going through the FluidStructureBeam tutorial has been very helpful. However, I would like to view the deformed mesh at each time step, which is why I am interested in outputting in .vtk format and visualizing with VISIT.
The problem I have is this: When I output the solution as a .vtk file, things work perfectly with the ElasticBeam tutorial, but with FSI, VISIT cannot read the file. Looking at the .vtk output itself, I can't tell where the problem is (things look good)... has anyone had any problems with fsi problems and .vtk output? Or can anyone give me some kind of tip?? I have the same .sif file as in the tutorial (see http://web.mit.edu/elmer_v5.3/tutorials ... am/fsi.sif) except the following:
Solver 4
Equation = Result Output
Procedure = "ResultOutputSolve" "ResultOutputSolver"
Output File Name = soln
Output Format = Vtk
End
I would really appreciate any help.
EDIT: This is not a problem with VISIT, rather with the writing of the vtk file. I downloaded paraview and opened the .vtk files, only to get the following error message:
ERROR: In /build/buildd/paraview-3.4.0/VTK/IO/vtkUnstructuredGridReader.cxx, line 319
vtkUnstructuredGridReader (0xaf583c0): Number of cells don't match!
Back to the drawing board...
I'm very excited to use the Elmer package, particularly since it is a free, open source alternative to other FEM packages. As a beginner, I am going through the tutorials, and would like to use VISIT as a visualization tool, since (correct me if I'm wrong) it offers more in terms of versatility than ElmerPost.
In particular, I am interested in FSI, so going through the FluidStructureBeam tutorial has been very helpful. However, I would like to view the deformed mesh at each time step, which is why I am interested in outputting in .vtk format and visualizing with VISIT.
The problem I have is this: When I output the solution as a .vtk file, things work perfectly with the ElasticBeam tutorial, but with FSI, VISIT cannot read the file. Looking at the .vtk output itself, I can't tell where the problem is (things look good)... has anyone had any problems with fsi problems and .vtk output? Or can anyone give me some kind of tip?? I have the same .sif file as in the tutorial (see http://web.mit.edu/elmer_v5.3/tutorials ... am/fsi.sif) except the following:
Solver 4
Equation = Result Output
Procedure = "ResultOutputSolve" "ResultOutputSolver"
Output File Name = soln
Output Format = Vtk
End
I would really appreciate any help.
EDIT: This is not a problem with VISIT, rather with the writing of the vtk file. I downloaded paraview and opened the .vtk files, only to get the following error message:
ERROR: In /build/buildd/paraview-3.4.0/VTK/IO/vtkUnstructuredGridReader.cxx, line 319
vtkUnstructuredGridReader (0xaf583c0): Number of cells don't match!
Back to the drawing board...