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Choice of turbulent models for jet impingement

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Old   September 27, 2004, 17:56
Default Choice of turbulent models for jet impingement
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Akash
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Hello,

I am currently working on submerged jet impingement cooling using the K-Epsilon "realizable" and K-Omega models. Could you give me the values of the wall Y+ that I should use with both these models? Thanks in advance for any suggestions.

Akash
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Old   September 28, 2004, 02:58
Default Re: Choice of turbulent models for jet impingement
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N Menon
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Would suggest starting with the one equation model, Spallart Allmaras. y+ vaues near 1, or over 30. check with the skin friction coefficient results from literature. that should give you a starting point.

Query: is this a supersonic jet impingment study that you are conducting?

cheers Nandu
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Old   September 28, 2004, 12:23
Default Re: Choice of turbulent models for jet impingement
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Akash
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Hi Nandu,

Thanks for your input. I am modelling subsonic jet impingement. I tried the Spallat Allmaras model but my problem requires refinement near the wall and hence the need for enhanced treatment near the walls. This option is provided by the K-epsilon model and that is why I chose this model.

Thanks, Akash

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