Velocity stack
Posted: Mon Apr 13, 2015 5:56 pm
Is the curve on a velocity stack a parabola?
No - a paradox.
Troll away!
Al
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Velocity stack
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Posted: Mon Apr 13, 2015 6:24 pm
Re: Velocity stack
Posted: Mon Apr 13, 2015 9:36 pm
An ellipse.Corvus wrote:Is the curve on a velocity stack a parabola?
Re: Velocity stack
Posted: Tue Apr 14, 2015 5:27 am
Brilliant. Thankyou for posting that info.HerrFlick wrote:An ellipse.Corvus wrote:Is the curve on a velocity stack a parabola?
Quasi linear Mach number evolution! What the f?
Are they saying the air acceleraties in constant fashion, from zero to whatever?
Re: Velocity stack
Posted: Tue Apr 14, 2015 10:49 am
Corvus wrote:HerrFlick wrote:An ellipse.Corvus wrote:Is the curve on a velocity stack a parabola?
snip
Brilliant. Thankyou for posting that info.
Quasi linear Mach number evolution! What the f?
Are they saying the air acceleraties in constant fashion, from zero to whatever?
I think they mean the shape keeps the acceleration constant as air is sucked into the bellmouth, the idea being to avoid pockets of turbulence.
Here's a straight pipe intake vs an elliptical bellmouth: notice the difference in uniformity of speed (colour) at the exit of the bell.
