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Old 12th July 2019, 04:49 PM
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abl567 abl567 is offline
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Join Date: Mar 2008
Location: Sydney
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Default Re: Shaftless Throttles

"Particularly important since the majority of flow is at the centre of a pipe"
Only when you have laminar flow, in general air in a pipe or duct travels in a vortex, the air closer to the duct walls has a higher velocity, and lower static pressure while the air in the centre of the vortex is slower but has a higher static pressure. So, a higher MASS of air is delivered in the centre but the air at the extremes gets there quicker. The quicker air can increase power but it's the slower, high mass air that produces torque, and torque talks. Think blowing slowly on a camp fire to help the embers glow as opposed to quick bursts that extinguish the fire.
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Last edited by abl567; 12th July 2019 at 04:52 PM.
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