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OpenFOAM vs FLUENT gradient schemes

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Old   March 8, 2024, 09:53
Default OpenFOAM vs FLUENT gradient schemes
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FLUENT uses facelimited gradient limiters as their default but also sets leastSquares for the gradient schemes

However, most of OpenFOAM's tutorial uses Gauss linear gradient schemes without limiters

It seems like leastSquares is more accurate than Gauss linear but if limiters are added to schemes it will decrease accuracy, thus may I know if
"faceLimited leastSquares 1" or "Gauss linear" is more accurate?
And whether "faceLimited leastSquares 1" or "cellLimited Gauss linear 1" is more accurate?
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Old   March 11, 2024, 02:42
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Saeed Jamshidi
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Dear gimson,

please have a look at the following thread, mabe you find out your answer there!

Question on simulating turbulent flow around a cylinder
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fvschemes, gradient accuracy, openfoam

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