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snappyHexMesh not removing desired portion of blockMesh

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Old   July 18, 2019, 12:10
Unhappy snappyHexMesh not removing desired portion of blockMesh
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Howdy Yall,

I am working on learning the workflow of snappyHexMesh, I've ran the incompressible motorBike tutorial and am now trying my hand at a very simple mesh. I am trying to use snappyhexMesh to mesh a cube
(dimension .25x.25x.25 meters). I've copied over the motorBike snappyHexMeshict and made all of the necessary replacements of motorBike with lilcube.

I have the snapping and layer functionality set to false and from my understanding just running the castelation operation would be enough to see a cube shape cavity within the original blockMesh.

I've attached screenshots of what paraview sees and I've attached copies of all of the relevant snappyHexMesh Files. If yall want i can also attach the .stl file that I am currently using.

I have a feeling i am missing a simple setting in the HexMeshDict but, in my inexperience, I am unable to determine what it is.

thanks in advance for yall's guidance
-Siefer92

logdecomposPar.txt

logsnappyHexMesh.txt

logsurfaceFeatureExtract.txt

snappyHexMeshDict.txt

view without cube to cut out.jpg
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Old   July 18, 2019, 12:45
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here are more files. Long story short, I am trying to mesh this cubic obstruction with snappyHexMesh

view with cube to cut out.jpg

surfaceFeatureExtractDict.txt
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Old   July 18, 2019, 14:26
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My issue came from the fact that I was executing the snappyHexMesh command in parallel in the following manner

mpirun -n 6 snappyHexMesh -overwrite -parallel

the -overwrite was what was causing headaches.... since SHM outputs time sequence files with the various mesh refinement stages my -overwrite was preventing them from being written.

additionally i had to issue the reconstructParMesh -mergeTol 1e-6

because when I issued the reconstructPar command I received the following error:

cannot find file

OpenFOAM/OpenFOAM-4.1/tutorials/compressible/sonicFoam/laminar/cubes/processor0/0.0005/polyMesh/pointProcAddressing at line 0.

after issuing the reconstructParMesh command I copied the polyMesh folder from the latest time sequence folder into the caselevel constant folder. From this point I can start working on the actual case itself....


I have a feeling though that this is the most rickety way to get SHM to work... If yall have any grains of wisdom to share please let me know!

I've also attached a picture of the output that I was looking for / the final mesh.

desiredmesh.jpg
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