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[ANSYS Meshing] Is always finer mesh got better result?

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Old   May 4, 2012, 18:32
Default Is always finer mesh got better result?
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Yangyang
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Hi everyone,

I try to simulate the effect of surface roughness in duct flow. I am using realizable k-e with enhanced wall treatment. Is always finer mesh got better result? I read fluent manul, y+ should be ~1. Is this arcurate if wall mesh are very fine (that said y+~0.1)? I don't consider the compute time and memory.

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Old   May 7, 2012, 01:50
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sometimes it introduces the errors in the solution for very fine near wall mesh nodes. check out the notes by F. mentor available on ANSYS website.
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