Extracting Surface Mesh from 2D Simulation (deforming also)

jtwilson · April 15, 2013, 05:10

Hey All,

I have a 2D mesh that I am imposing a deformation upon based on control points that I have prescribed (the geometry is valve-like structure). I would like to extract the surface of the 2D mesh and then remsesh it because the cells are starting to become slightly skewed due to the large deformation.

I know StarCCM+ can extract a 3D surface mesh, but it doesn't seem to work properly with the 2D geometry. For example, I have tried to extract the 2D surface and it seems to work; but then when I import it back into StarCCM+ nothing comes up - it's as if nothing as been imported. Is anyone familiar with this? I am currently using version 7.04.011.

Furthermore, I would then like to map the solution of the old geometry to the newly remeshed geometry.

Any help or advice on this would be greatly appreciated.

Thank you,
John

JBeilke · April 17, 2013, 01:57

There seems to be no direct way to go back from a 2d mesh. Even importing into prostar is not possible.

The workaround is to use the mesh converters from OpenFoam (ccm26ToFoam) then 2dto3d ...
When I tried this I ended up with some vertices somewhere in space and decides to start the meshing from scratch.

jtwilson · April 17, 2013, 07:41

Thanks for the information, Joern. I'll keep trying.

April 15, 2013, 05:10	Extracting Surface Mesh from 2D Simulation (deforming also)	#1
jtwilson New Member Join Date: Apr 2013 Posts: 6 Rep Power: 13	Hey All, I have a 2D mesh that I am imposing a deformation upon based on control points that I have prescribed (the geometry is valve-like structure). I would like to extract the surface of the 2D mesh and then remsesh it because the cells are starting to become slightly skewed due to the large deformation. I know StarCCM+ can extract a 3D surface mesh, but it doesn't seem to work properly with the 2D geometry. For example, I have tried to extract the 2D surface and it seems to work; but then when I import it back into StarCCM+ nothing comes up - it's as if nothing as been imported. Is anyone familiar with this? I am currently using version 7.04.011. Furthermore, I would then like to map the solution of the old geometry to the newly remeshed geometry. Any help or advice on this would be greatly appreciated. Thank you, John

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April 17, 2013, 01:57		#2
JBeilke Senior Member Joern Beilke Join Date: Mar 2009 Location: Dresden Posts: 498 Rep Power: 20	There seems to be no direct way to go back from a 2d mesh. Even importing into prostar is not possible. The workaround is to use the mesh converters from OpenFoam (ccm26ToFoam) then 2dto3d ... When I tried this I ended up with some vertices somewhere in space and decides to start the meshing from scratch.

April 17, 2013, 07:41		#3
jtwilson New Member Join Date: Apr 2013 Posts: 6 Rep Power: 13	Thanks for the information, Joern. I'll keep trying.