[icecola]

Hello everyone,

I want to inject particles from the curved surface ,and set the particles velocity in a direction perpendicular to the curved surface. I write a udf but it doesn't work.
Is there anyone who can help me modify this UDF, or is there any other way to solve this problem?
Any help is highly appreciated.

#include "udf.h"
DEFINE_DPM_INJECTION_INIT(Init_V_T,I)
{
Thread *t;
face_t f;
Particle *p;
cell_t cell;
Thread *cthread;
real A[ND_ND];
real AMag,AMag0,AMag1;
loop(p,I->p) /* Standard Fluent Looping Macro to get particle
streams in an Injection */
{
begin_f_loop(f,t)
{
F_AREA(A,f,t);
AMag = NV_MAG(A);
AMag0= sqrt(pow(A[0],2));
AMag1= sqrt(pow(A[1],2));
cell = P_CELL(p); /* Get the cell and thread that the particle
is currently in */
cthread = P_CELL_THREAD(p);

P_VEL(p)[0]=10*AMag0/AMag; /* x velocity */
P_VEL(p)[1]=10*AMag1/AMag; /* y velocity */

}
end_f_loop(f,t)
}

}