Jet in free air
 

I am trying to model a jet which is moving freely in air and impinging on a flat plate. Sir please suggest me how to define the condition in ANSYS-CFX Pre. Will I have to write an expression or taking air & water and specifying opening type boundary condition would do it?

You might want to post this in the CFX threads, this thread is for OpenFOAM.

http://www.cfd-online.com/Forums/cfx/