[M.Sc_Student]

Hi dear friends
I'm doing a simulation of a flapping airfoil. I have a udf, and I have compiled it and I also created dynamic mesh zones related to motion, but I can not see the preview of motion by use of zone motion under the display tab. this is the udf:
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#include "udf.h"
DEFINE_CG_MOTION(plunging_motion,dt,vel,omega,time ,dtime)
{
Thread *t;
face_t *f;
NV_S(vel,=,0.0);
NV_S(omega,=,0.0);
if(!Data_Valid_P())
return;
vel[1]=2.495*cos(6.2392*time);
}
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I have attached my airfoil and it's boundary to this thread.
I would really appreciate your help.
thanks