[iceman53y]

Hi,

I have this UDF where I am trying to move a cylinder at a certain frequency.
But the cylinder moves to the right and comes back to its original position. I want it to oscillate about its origin. I want it to move right and left from its origin position.

What do I change in this UDF. Please help.

/* Moving Grid problem - CG movement of a cylinder */
#include "udf.h"
static real velx = 0.0;
DEFINE_CG_MOTION(cylinder, dt, vel, omega, time, dtime)
{
NV_S(vel, =, 0.0);
NV_S(omega, =, 0.0);

velx = 0.005 * sin(3.1415927 * time / 5.);
vel[0] = velx;
}