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[mesh manipulation] Conjugate Heat Transfer Fluent Mesh Conversion to OpenFOAM

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Old   July 12, 2019, 07:16
Default Conjugate Heat Transfer Fluent Mesh Conversion to OpenFOAM
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Hello,


I am currently attempting to convert a Fluent mesh (V19.4) in .msh ASCII format, with an interface wall between fluid and solid domain to OpenFOAM (latest dev version), to simulate conjugate heat transfer.


When I use the fluentMeshToFOAM the code is unable to convert it (although it should be able to), while the fluent3DMeshToFoam successfully produces the polyMesh folder.



Using checkMesh I see that the converted grid's shared internal wall has double the number of nodes and faces but is a single entity. How do I create a shared internal wall setting up the internal mapping between the fluid and solid heat transfer? Do I use createBaffles? I have attempted to but it then creates a huge amount of faces and nodes on the shared surface. I have attempted to split the mesh between solid and fluid regions but then I get no coupling at all.
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Old   August 22, 2019, 08:46
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Muhammad Waqas
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Hi,


As far as I understood, you are not getting separate regions for fluid and solid. If it is the case, then you are missing something. Use following command to convert mesh.


1) fluentMeshToFoam -writeZones fluentMesh.msh // for 3D mesh use fluent3DMeshToFoam
2) splitMeshRegions -cellZones -overwrite // It will split your mesh into individual regions


Regards
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Old   August 22, 2019, 09:11
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Hello Muhammad,


Thanks for your kind reply. Indeed you understood correctly, I did not get 2 separate regions. I actually managed to solve the issue by changing the boundary type of the interface wall in the Fluent mesh to "internal". Once I did that I could use the standard instructions.


Regards,


G
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baffles, conjugate heat transfer, fluent mesh conversion, interface shared walls, openfoam

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