Internal Fan

Hi all!

I'm having problems defining an "Internal Fan" boundary condition. When I run the model and the solver is finished, it does not seem that the fan has worked!

Please, explain the appropriate procedure in modeling/defining  an internal fan. Which faces should be used when selecting enter and exit flow faces? Should we have a block part representing the fan? What is the overall algorithm?

Thanks!

-Ramin

SolidworksFlow Simulation