Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
For the most part, it's area that you're concerned with. But as the port becomes more asymmetrical, it begins to act differently. There are standing wave issues that can creep in if a dimension is very long compared to the others, and turbulence instead of laminar flow in the port can alter the resistance, which changes its behavior.