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[snappyHexMesh] Gap Detection and Refinement

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Old   September 23, 2024, 22:39
Default Gap Detection and Refinement
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Leung Ho Man
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Hi fellow OpenFOAM users, has anyone had experience implementing gaplevel and gapmode in SHM successfully? It doesn’t seem to get me the numebr of cells in gap that I have input. For example if I input (15 0 10) for gaplevel it’d still give me maybe 2 cells in the gap (gapmode mixed). SHM seems to be responding to my inputs to an extent becuase if i input a smaller number for the cells in gap e.g. (2 0 10) the small gaps would be closed. So, I am thinking it's being restricted by some other paramteres? Thanks!!
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Old   September 25, 2024, 07:22
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Hey,

I found it easier to do with BaramMesh which is an interface for snappyHexMesh. They have a nice tutorial for gap refinement and how to manipulate the features.

Here is the link: https://baramcfd.org/mesh/2024/05/22/gapRefine-post/
(click right on a blank space to see an option for translating to english)
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Old   September 25, 2024, 11:30
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Leung Ho Man
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Hey @rocketLauncher thanks for responding and letting me know there is a GUI for SHM, it could prove useful. The way the BARAM website describes how gap refinement works is exactly what I understood it to be, somehow it doesn't work for in the raw openfoam.
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