[vietle]

Hi,
i am working on a simulation which contains the motion of a rigid wall zone defined by a profile.

The motion is divided into 3 phases:

1. Translation from A to B
2. Certain time span without motion
3. Translation from B back to A

My current UDF

#include "udf.h"

DEFINE_CG_MOTION(moving_wall, dt, vel, omega, time, dtime)
{

real t = CURRENT_TIME;
NV_S(vel, =, 0.0);
vel[0] = 0.00016 * 3.1415 * 20 * cos(10*3.1415 * t + 3.1415/2);

}