Hi, In ICEM look at the aorta tutorial, there is the whole explanation on how to split the surface by angle to get the inlet/outlets (same process on StarCCM+ or OpenFOAM by the way. ICEM can also generate boundary layer cells.
Regards, Florian -------- Message d'origine-------- De: Luca Antiga [mailto:luca.ant...@orobix.com] Date: mer. 5/1/2013 08:36 À: Vincent Ip Cc: vmtk-users@lists.sourceforge.net Objet : Re: [vmtk-users] VMTK Mesh Problem Hi Vincent, On May 1, 2013, at 6:49 AM, Vincent Ip wrote: > Dear VMTK users, > > I encounter a situation that when I export the surface to STL format and > trying to mesh it with ANSYS ICEM. > I cannot define the inlet and outlet as they are incorporated into the wall > (the whole thing). > Is there anything I should do besides clipping and capping before exporting > the surface to STL format? I don't use ICEM so I'm not sure of what's the best way to go here. Unfortunately STL doesn't support the definition of surface region indicators associated to either points or cells, so I guess there should be a way to do something like this within ICEM. Any ICEM users out there that can help out? > The second problem is that I had repeated crashing when I try to mesh it with > VMTK and this happen whenever I add the boundary layer. > The vessel geometry I got is a segment from ICA siphon segment to M2 and it > is extracted from Time-of-flight MRA. It does appear to be a bit bumpy in > appearance, probably due to its low resolution, so I'm not sure if this could > be the problem. Or if I need a very powerful computer to run the VMTK?? FYI, there's new robust boundary layer code coming up in vmtk in the near future. Having said that, the old code shouldn't crash (in the worst case it generates elements with negative Jacobian here and there). Are you sure you are generating a mesh with a good density? If you generate very coarse meshes the mesh itself could degenerate during the remeshing phase. Just a thought. In any case, feel free to send your model over and I'll take a look as soon as I can. Best, Luca > Please kindly comment. > > Thanks, > Vincent > > ------------------------------------------------------------------------------ > Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET > Get 100% visibility into your production application - at no cost. > Code-level diagnostics for performance bottlenecks with <2% overhead > Download for free and get started troubleshooting in minutes. > http://p.sf.net/sfu/appdyn_d2d_ap1 > _______________________________________________ > vmtk-users mailing list > vmtk-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/vmtk-users ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ vmtk-users mailing list vmtk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vmtk-users ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ vmtk-users mailing list vmtk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vmtk-users
