[vigii]

Hi Everyone,

I'm trying to simulate the motion of the piston (2D case).

Please see the attached image.

Here,I want to move my piston head. I tried by using UDF (please see down) and using profiles.
I'm not clear how to make the mesh move. What are the BC and Dynamic mesh condition to be given for my domain if my mesh is structured.

Please help me to start my simulation in a right direction.

And also I need to know about how does the function of UDF and Profiles affect for the particular problem.

#include "udf.h"
#include "dynamesh_tools.h"

DEFINE_CG_MOTION(oscillate,dt,vel,omega,time,dtime )
{
Thread *t;
face_t f; 
t = DT_THREAD(dt);

begin_f_loop(f,t) 
{
if (time <= 0.12)
vel[0] = 0.1;
else
vel[0] = 0;
}
end_f_loop(f,t)
}