Mapping of results onto different mesh

[Sita Drost]

Hello all,

Would it be possible in SimVascular to map simulation results onto a slightly different mesh, e.g. same geometry, different mesh size, or slightly different geometry with similar mesh size? Something like the mapFields utility in OpenFOAM?

Many thanks!
Sita

[David Parker]

Hi Sita,

This functionality to map simulation results onto another mesh is currently not supported in SimVascular. You might could do this in Paraview Resample with Dataset or using VTK directly, VtkProbeFilter can interpolate cell data to sample points.

Cheers,
Dave

[Sita Drost]

Hi Dave,

Great, thanks, I'll give that a try!

Sita

[Sita Drost]

Sorry, just a follow-up question: if I use this Resample with Dataset filter in ParaView to map pressure/velocity results from one mesh onto another, is there any way to convert the results back into a restart-file for SimVascular? I'd like to use something like this to be able to use the end-result of one simulation as a starting point for the next (slightly altered) simulation. For example, a healthy vessel and a stenosed one. Would that be possible?

Thanks!
Sita

[David Parker]

Hi Sita,

You can write the pressure values to a VTK .vtu file and read them in as initial values by adding a read_pressure_vtu command to the .svpre file written to your project's Simulations directory. The .svpre file is written when you select the Create Data Files for Simulation button in the Simulations plugin.

See http://simvascular.github.io/docsFlowSo ... eatingdata.

Cheers,
Dave

[Sita Drost]

Awesome, thanks a lot, I'll try that!