I need your help

Whitaker

How can I generate an imaginary plane in my calculation domain on which some specific conditions are given? I am going to use the sliding mesh method in my problem but this imaginary plane should keep stationary. Or in other words, this imaginary is actually a wall in my problem. Because the grid interface of the sliding mesh in my problem will inevitably cross this wall, which is not allowed in FLUENT, I have to treat this wall as an imaginary plane. Then I can set the velocities and temperature conditions on this plane. Do you think this is a good idea? Is it feasible? Thanks a lot!