see post #29

In the same way of rotation of circle(by giving angular velocity to circle) is it possible to get only translational motion (by giving translational velocity to circle) of circle in the rectangle domain???

yes
but you have to modify your zones and then remesh
With translation motion, you have other possibilities than sliding mesh (layering, remeshing or sliding mesh)

Thank you.
Can you please explain the steps how to do?
is UDF required for movement of circle??

you need UDF only if your motion isn't known in advance
Else you can set a constant velocity , or you can use a scheme file for setting the motion in function with time (interpolation)

i want to translate circle only in certain distance??
for that what to do?
can you tell what are the steps to be followed??

check this tutorial
http://aerojet.engr.ucdavis.edu/flue...tg/node181.htm

Thank you..