Help Needed in Geometry for jet Array impingement in Cocentric Tube Annulus
 

Hi everyone. Can someone save me from drowning?. I am trying to create 2d and 3d geometry for jet array in concentric cylinder annulus to study convective heat transfer. i have to generate wall jets on the inner cylinder with angular pitch (spacing) of 90 degrees and inline pitch of 4.9mm. I have tried to no avail. whats the easiest way out?. I have an option of using ICEM CFD and Gambit. I have also tried creating these jets in Solidworks and then importing into Gambit, but seemed too complex to handle. Can someone give me the easiest steps to follow to solve this problem?
Kind Regards Everyone.