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Wall Y+

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Old   May 9, 2005, 21:34
Default Wall Y+
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Sham
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Hello all,

In order to increase the wall Y+ value, i did boundray adaption. BUT, the results turn out to be less accurate than without having the adaption. Which means, without adaption, my results is OK. What does this mean? Does it mean I dun have to decrease the value of Y+ even though in it quite high?

Thanks.

Sham.
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Old   May 10, 2005, 11:15
Default Re: Wall Y+
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pUl|
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Are you using Std Wall Fn or Enh Wall Tr?
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Old   May 10, 2005, 17:58
Default Re: Wall Y+
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It is enhanced wall function.

Thanks.
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Old   May 10, 2005, 18:38
Default Re: Wall Y+
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What is your domain (geometry)?
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Old   May 11, 2005, 04:10
Default Re: Wall Y+
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I have arectangular domain with a cylinder sitting on the bottom. It is about 66000 cells.

thanks.

Sham.
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Old   May 11, 2005, 11:02
Default Re: Wall Y+
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You need Y+ of order 1-5. What is the value before adaptation?
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Old   May 11, 2005, 16:15
Default Re: Wall Y+
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It is of the order around 1000. But I dunno how many times whould I adapt boundary to bring down the values to 1-5.
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Old   May 12, 2005, 01:01
Default Re: Wall Y+
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Did you try placing your first grid point using http://geolab.larc.nasa.gov/APPS/YPlus/
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Old   May 13, 2005, 06:59
Default Re: Wall Y+
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can you pls tell me hwo can I do that in Gambit?

Sham.
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