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Theory of cell quality scalar

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Old   April 1, 2021, 05:27
Default Theory of cell quality scalar
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Hi ! Does anyone know how work cell quality scalar in Star CCM+ ? I mean cell quality scalar is based on what ? Only the length or there is something more for Star CCM+ to qualify a cell as bad ?

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Old   April 5, 2021, 09:08
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I believe that their algorithm is proprietary, otherwise the details would be listed in the help files. I think they updated this algorithm in the 2020 version, so the answer may even depend on your version (somewhat).

Their description of the algorithm says that it is based on a hybrid of the Gauss and least-squares methods for cell gradient calculations and considers the distribution of the centroids as well as the orientation of neighboring cells.

I imagine that none of that is very helpful. If you really need an answer to this, you may need to submit a help ticket and hope that they can give you enough details to make sense of it.
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cell quality, theory

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