Boundry coditionals of cabinet system

Hi All

I have attached a picture. There are many devices in the cabinet. I have one inlet and one outlet.

A fan must create a pressure difference. I have defined a rotating region and enviromental pressure for outlet and inlet area.

However the result does not seem properly which you can see on the picture with trajectories.

Could you please give me some advice how to define boundry conditionals.

SolidworksSimulation