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Hello,

As described in the subject line, I am having some weird experiences with the meshing tool and simulation interface. To begin, I have imported a geometry (STL) pieced together externally; actually, I used SV to make the vessels and another program for the aneurysm. I was able to import the STL file back into SV:
I had to use the separation angle/extract tool to get my correct vessel walls/inlet-outlet faces. Everything is looking good on this front. When I moved to make the mesh:
I continually got a Tetgen Error Code (#10) when trying to mesh. I was able to get the mesh tool working when I only selected the 'volume meshing' option. First question, will this lead to errors with the SV simulation interface? I've tried importing as a solid as well, but the same problem with 'surface meshing' occurs. Anyways, I used this volume mesh to create the simulation job:
However, as shown, I no longer have any wall or face/cap information in the BC section. I'm assuming this is happening, because, when I import the model, I do not originally have these faces. However, I've added them into the model as shown in the first image. I would expect them to be present when moving to the simulation job..

Any assistance/feedback would be great. I had another post about the 3D segmentation tool not working correctly; this is why I had to "frankenstein" my geometry together and import into SV

Joseph

Hi Joseph,

Thanks for the detailed post. Yes, this could potentially lead to issues in the simulation portion. Only doing a volumetric mesh fixes the surface mesh, so if the surface mesh is poor quality, this could lead to poor quality volumetric elements near the boundary.

In the modeling module, try doing a global surface remeshing before taking to the meshing module. This usually helps and gets rid of any potential surface issues prior to meshing.

Let me know if that helps.

Thanks!

SimVascular Development Team