can y plus be used to calculate the distance between cell centroid and wall -- CFD Online Discussion Forums

April 10, 2016, 21:53

can y plus be used to calculate the distance between cell centroid and wall

zhixin

Member

志新高(Zhixin Gao)

Join Date: Aug 2014

Location: hz.China

Posts: 30

Rep Power: 11

Hi, all.
sorry it's me again.

I need the distance to calculate other things. I tried the C_WALL_DIST(c,t) macro, but it seems I get wrong results, so I wander if I can use y plus to get the distance.

Quote:

A non-dimensional wall distance for a wall-bounded flow can be defined in the following way:
y+=[distance*(wall shear stress/density)^0.5]/kinematic viscosity

Best.

Last edited by zhixin; April 11, 2016 at 01:12.

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