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Enhanced wall Treatment

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Old   July 13, 2013, 10:58
Default Enhanced wall Treatment
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Luca
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I have a question regarding the EWT used in FLUENT.

A two-layer approach is used. The domain is subdivided into a viscosity affected region and an outer region depending on the turbulent Reynolds number (Re_y* = 200; above this value outer region).

If Re_y<Re_y*, epsilon is analitically determined, while momentum and k transport equations are retained and solved.

The previous subdivision does only apply for the evaluation of epsilon and turbulent viscosity? The velocity is analitically evaluated in the entire viscosity affected region or only in the FIRST near wall cells, as I guess?

Moreover, for the k-omega (standard and SST) the value for omega is only imposed at the FIRST near wall cell while all other quantities are calculated by solving the transprt equations? (except the velocity, which is analitically evaluated at the first wall cell)
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