[arriftou]

Hi
I m trying to write a UDF for a velocity profile for a cavity problem. The velocity profile is only in the horizontal direction(x direction) like : =-4340.4Z2+8608.2Z-4267 (see figure attached)
But im new in udf programming
I was found some examples in fluent tutorial like this
/************************************************** ***********************/
/* udfexample.c */
/* UDF for specifying a steady-state velocity profile boundary condition */
/************************************************** ***********************/

#include "udf.h"


DEFINE_PROFILE(inlet_x_velocity, thread, index)
{
real x[ND_ND]; /* this will hold the position vector */
real y;
face_t f;

begin_f_loop(f, thread)
{
F_CENTROID(x,f,thread);
y = x[1];
F_PROFILE(f, thread, index) = 20. - y*y/(.0745*.0745)*20.;
}
end_f_loop(f, thread)
}

But must I applic this code simply?
Please can anyone help me?