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yPlus value in internal flow (natural convection in cavity)

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Old   January 26, 2017, 09:07
Default yPlus value in internal flow (natural convection in cavity)
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I am trying to validate the turbulent case of following paper

I am using buoyantBoussinesqPimpleFoam solver for this. Also I am using k-omega turbulence model. There are multiple points that I don't understand

1. What value of turbulent prandtl number should I use for my case(I guess unity is a good choice)?
2. Since I am using wall function so value of yPlus should lie around 30-40 but since it is a case of internal flow I don't know how to calculate grid size (since I don't know velocity near wall) . How to tackle this problem?
3. Also how to calculate deltaT value ?

Since I am new to OpenFOAM so please be elaborate even if you find my questions silly

Last edited by tarunw; January 26, 2017 at 14:42.
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