UDF for rotation
 

Hi, I am a beginner in fluent and am trying to use the dynamic mesh option in fluent to simulate a lobe pump,(with two lobes rotating in opposite direction). To use dynamic mesh I need to define the motion profile of these lobes. Is there any available UDF which allows me to define that motion. if not can anyone help me in writing an UDF as I have very little knowledge of C language. Thank you.

Udf
 

#include<stdio.h>
#include<math.h>
#include"udf.h"
DEFINE_CG_MOTION(right,dt,vel,omega,time,dtime)
{
omega[2]=-107;
}
DEFINE_CG_MOTION(left,dt,vel,omega,time,dtime)
{
omega[2]=107;
}

hello dear asdr
would you please help me creating a UDF to give the motion of a rigid bar rotating around an axis to fluent. i just need a udf to give an oscilatory rotating motion of that rigid bar.
thank you a lot
khashayarmoshksayan@yahoo.com