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Old   August 27, 2007, 18:11
Default Y+
Jorge Aguilar E
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I need to know what is the meaning of this parameter in fluent and how can i reduce it on the results on fluent.
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Old   August 27, 2007, 18:28
Default Re: Y+
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I want to know more about this term as well. could any one give some information or introduce some refrences on this? I cant find enough information on documentation at least in a intelligible way!
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Old   August 27, 2007, 19:26
Default Re: Y+
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I suggest you start with an advanced fluid dynamics book or the Fluent manual (modeling turbulence). y+ is a dimensionless distance from the wall which is used to study the different zones of the boundary layer. Depending on the turbulence model being used, the first adjacent node near the wall needs to be within a specific y+ value. For example, for the k-e model, y+ must be between 30 to 300 for the standard wall function and around 1 for the enhanced wall treatment.

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