[jackchilvers]

Dear all,

I am looking to gain access to cell y+ values within a Fluent UDF in order to prescribe a set value for my user-defined scalar for all cells where y+ < 100. Could you please advise a suitable macro?

Many thanks in advance.

[yasinwind]

I am facing the same problem right now while trying to define a new turbulent viscosity (in the Buffer-Zone) depending on the dimensionless y+ value.
My aim is to to better take into account the change of the boundary profile along the wall with using the y+ value instead of the actual wall distance (in meters).

Maybe someone has found a solution or could share his advice.

edit: What I got so far is a definition with a function f(y) which I'd like to change to a function f(y+):

DEFINE_TURBULENT_VISCOSITY(XX,c,t)
{
..
real y = C_WALL_DIST(c,t);
mu_t_SST=f(y)
...
}

[thedal]

Have you figured this out?