[rayan24]

I want to impose by UDF a same velocity profile in 3 inlets, but i don't get same velocity in the 3 inlets apparently i impose my profile in function of the distance r!!

how can i impose my velocity profile in the "surface" of inlet to get samevelocity please??

my udf is :

#include "udf.h"
DEFINE_PROFILE(w_velocity_inlet,t,i)
{
real x[ND_ND]=3; /* this will hold the position vector */
real r;
face_t f;
begin_f_loop(f,t)
{
F_CENTROID(x,f,t);
r = x[0];
F_PROFILE(f,t,i) = -((0.0431*pow(r,3))-(0.3857*pow(r,2))+(0.3129*r)+8.8045);
}
end_f_loop(f,t)

thanks