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[cfMesh] CFMesh with OpenFOAM 7, binary format

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Old   March 26, 2020, 08:05
Default CFMesh with OpenFOAM 7, binary format
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benoit paillard
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Hi all,


When trying to mesh a case in binary format in openfoam 7, the meshing works but checkMesh and solvers crash with


"Expected a ')' while reading binaryBlock"


Which reminds me of WM_LABEL_SIZE issues



If you mesh for instance sawOctree in the tutorials, checkMesh will crash.



I tried looking at the issue but no luck so far. Any idea ?
Thanks.
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Old   April 5, 2020, 20:27
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Gabriel dos Santos
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I'm having the same issue here.


Fortunately, there are some possible workarounds.


1) Use another OpenFOAM version (e.g., OpenFOAM 5 or OpenFOAM v1912) to "convert" the constant/polyMesh data via the foamFormatConvert utility. I know, it is kinda redundant; but it works.


2) If one doesn't have another OpenFOAM distribution available, an alternative is to save the polyMesh data in ASCII and then convert it to binary. For that, I would suggest to set a higher writePrecision value in system/controlDict. Perhaps, something around 16 is good enough. Then, just generate the mesh using cfMesh, set writeFormat back to binary in system/controlDict, and run foamFormatConvert.


Hope this helps.

Last edited by Niteck; April 6, 2020 at 10:06. Reason: corrected typo
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Old   April 18, 2020, 18:18
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benoit paillard
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Hi ! thanks for your idea.


Unfortunately, using ASCII is not an option because the files would get a lot larger than I can afford.
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