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Hi Guys;
Sent this to the other list a while back.
Attached is a pic a local fellow sent some time ago detailing a
comparison of various intakes.
I would love to know the source - unfortunately he could not find it...
I'm guessing the front top surface of any laminar flow airfoil revolved
into a body of revolution like a bellmouth would be beneficial in terms of drag reduction by delaying the transition point from laminar to turbulent (then separation) with favourable pressure gradients. 2D airfoil software (such as xfoil) shows this. 3d multi-element or CFD results would be nice :)
I have heard of performance increase claims in the 15-25% range -and
many rules of thumb for tapered gradients.
Check out something like the following for claims of big results:
http://www.bpinitiatives.com/products.html
There is no question you can reduce drag but the big question is how
much turbulence results in optimal power and at what range of intake velocities? as is being done with some of the latest turbulent flow intakes?
Cheers
Cary
velocitystacks.jpg
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