Airflows

Make sure you get the right air flow direction on the fan when you install the 120mm chassis fans into the front of your case. The humped part is the direction where the air is sucked into the case, and the depressed part is the direction where the air flows towards. Air flow is from the front to the rear. So, the guard rail should be faced towards the direction of the inside of the case.

This is an example of how to set up time-dependent pressure drops on cylinder inlet ports to simulate engine intake manifold valves opening and closing at each cylinder port. SolidWorks Flow Simulation, 2009.