Quote:
Originally Posted by Wabash9000
I'm talking out my ass here, but I wonder if a round pipe might flow better because the air could vortex in the pipe. I don't know if that would make any difference. I wonder if the oval would change the sound at all. Straight pipe of the down pipe, no bends no nothing, would be loud as hell and might have a unique sound to it.
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The air flow, whether turbulent or round, wont really make a different. You would have to determine the reynold's number of a certain section in the pipe to determine whether it will be turbulent or laminar.
Assuming your cross sectional areas are the exact same, then it should not make a difference.