[Paraview] help with scalar field over moving mesh coming from PETSc code

[David E DeMarle]

Hi Luca,
Try this -> open up both data sets, select both in the Pipeline Browser and
apply the Append Attributes filter.

hope that help


On Mar 30, 2016 5:11 AM, "Luca Pavarino" <luca.pavarino at unimi.it> wrote:

>
> I need to visualize in Paraview at every time step a scalar field (in my
> PETSc code Vec cc_1 below) over a moving structured mesh (Vec um). Both the
> field and the mesh are solutions of some a parallel PETSc time-dependent
> PDE code. Do you have a simple PETSc example to output these vectors at
> each time step and see them in Paraview (either each snapshot separately or
> with a movie)?
>
> I tried with the simple PETSc code (Vec cc_1 is the scalar field and Vec
> uum_1 is the vector of 3D coordinates):
>
>  write (filename,"(A, I4.4, A)") "uuvtk", int(k*dt),".vts"
>  call PetscViewerVTKOpen(PETSC_COMM_WORLD,filename,
>  & FILE_MODE_WRITE,view_out_vtk,ierr);
>  call VecView(cc_1,view_out_vtk,ierr)
>  call PetscViewerDestroy(view_out_vtk,ierr)
>
>  write (filename,"(A, I4.4, A)") "uumvtk", int(k*dt),".vts"
>  call PetscViewerVTKOpen(PETSC_COMM_WORLD,filename,
>  & FILE_MODE_WRITE,view_out_vtk,ierr);
>  call VecView(uum_1,view_out_vtk,ierr)
>  call PetscViewerDestroy(view_out_vtk,ierr)
>
> but I get 2 separate vectors and I do not know how to make Paraview see
> that the scalar field is defined over the coordinate mesh. Thanks for any
> help,
>
>  Luca
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