I am trying to model the airflow over and through a light aircraft engine cowl. The cowl has 2 openings at the front and one at the rear. If I create an enclosure with a Velocity Input, Pressure Outlet and Slip Walls and run a simulation the airflow does not appear to go through the front openings just around the outside of the cowling. Creating an enclosure and selecting one of the openings gives me airflow through the cowl but not around it. The flow through the cowl will be effected by the flow around the cowl due to the lower pressure behind it and I want to model this.
Here is a link to the model
Any help much appreciated