Piston Cylinder Simulation

Hi,

I am trying to simulate oil flow in a piston cylinder assembly.

The flow is incompressible and so I am using the Incompressible Navierstokes ---> Transient analysis application made.

However, inorder to simulate the linear movement of the piston inside the cylinder, I dont know which application mode has to used.

Can someone please guide me regarding this ?

I would appreciate if anyone who has done simulations of Piston-Cylinder assembly can provide me with the simulation files, so that I can get an idea of the boundary conditions !!

With Best Ragrds
Nash