[Omarspace]

Hi Dear,
It is the first time that I have to model turbulent fluid. I am supposed to use K-Omega Model. It asks me to define prandtl number for energy and wall as well.
for alpha I don't know how to access it. I only find that command "rng_alpha(1., mu + mu_t, mu)" which is for K-epsilon RNG so how to get alpha that is used in K-Omega ?
I want also to know if this udf is right or i have to change it
Thanks in Advance
Regards
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#include "udf.h"

// For Energy Prandtl Number //

DEFINE_PRANDTL_K(user_pr_k,c,t)
{
real pr_k, alpha;
real mu = C_MU_L(c,t);
real mu_t = C_MU_T(c,t);

alpha = rng_alpha(1., mu + mu_t, mu);
pr_k = mu_t/((mu+mu_t)*alpha-mu);
return pr_k;
}

//*************************//
//for OMEGA DISSIPATION//
DEFINE PRANDTL_O(user_pro_o,c,t)
{

real pro_o ;
pro_o=2.00 ;
return pro_o ;

}

//*******************//
//For Wall//
DEFINE PRANDTL_T_WALL(user_pr_t_wall,c,t)
{

real pr_t_wall;
pr_t_wall=0.85;
return pr_t_wall ;

}