[Other] Mesh Conversion: OpenFoam (polyMesh format) to Calculix

gillers18 · April 21, 2015, 08:18

Hello All,

Currently working on a Problem dealing with Fluid Sturcture Interaction using the both programms OpenFoam and Calculix. I have already done the CFD Simulation in Open Foam and the results have been stored in OpenFoam polymesh format. Now I would like to use these Results to perform the FEM-Simulation, but Calculix can´t read these results because the exported polymesh contains some elements, which are not available in Calculix(only Hexa8 elements are supported).

How do i go about converting the polymesh from Openfoam in a mesh format with only hexa8 elements? Is there a converter available for this case?

Best Regards

Thierry

hjasak · April 22, 2015, 04:37

You need to decompose the polyhedral cells into shapes your software can understand. Paraview converter/module has a similar problem, so you can find code snippets there.

Hrv

gillers18 · April 24, 2015, 04:37

Thx fo your help. I really appreciate it.
Actually I m not used to work with the Paraview Converter /Module. Could you please explain me how to go about finding the code snippets on that module, which could help me to decompose the Polyhedral cells?

Best Regards

Thierry

April 21, 2015, 08:18	Mesh Conversion: OpenFoam (polyMesh format) to Calculix	#1
gillers18 New Member Join Date: Feb 2015 Location: Stuttgart Posts: 7 Rep Power: 11	Hello All, Currently working on a Problem dealing with Fluid Sturcture Interaction using the both programms OpenFoam and Calculix. I have already done the CFD Simulation in Open Foam and the results have been stored in OpenFoam polymesh format. Now I would like to use these Results to perform the FEM-Simulation, but Calculix can´t read these results because the exported polymesh contains some elements, which are not available in Calculix(only Hexa8 elements are supported). How do i go about converting the polymesh from Openfoam in a mesh format with only hexa8 elements? Is there a converter available for this case? Best Regards Thierry

April 22, 2015, 04:37		#2
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,907 Rep Power: 33	You need to decompose the polyhedral cells into shapes your software can understand. Paraview converter/module has a similar problem, so you can find code snippets there. Hrv gillers18 likes this. __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

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April 24, 2015, 04:37		#3
gillers18 New Member Join Date: Feb 2015 Location: Stuttgart Posts: 7 Rep Power: 11	Thx fo your help. I really appreciate it. Actually I m not used to work with the Paraview Converter /Module. Could you please explain me how to go about finding the code snippets on that module, which could help me to decompose the Polyhedral cells? Best Regards Thierry