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Influence of Y+ value

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Old   February 6, 2004, 08:03
Default Influence of Y+ value
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xiang
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I am applying Standard wall function in my simulation. After the first try, I found Y+ values in some regions were out of the range of 30-60. Then I adapted the near wall grid with Y+ adaption (min. 30 and max. 60). The cell number increased by around 3000 after adaptation. Then I iterated again until convergence was obtained. But when I compared the velocity distribution between these two runs, it showed only negligible difference. Is this possible or I am doing anything wrong? Thanks for all your opions.
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Old   February 6, 2004, 14:02
Default Re: Influence of Y+ value
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Melih GULEREN
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Did you look near-wall or mean flow profile? I think, if you look near-wall by a log-scale, you will see the difference...

Regards
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Old   February 6, 2004, 20:27
Default Re: Influence of Y+ value
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xiang
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Old   February 6, 2004, 20:31
Default Re: Influence of Y+ value
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xiang
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Thank you very much. I will look into the near wall carefully.
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