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I checked many (not all) of my paper textbooks, and none of them theVenturi / Bernoulli
Coanda effect.
I only heard about the CE from phys-l in the past few years. So if there
is much confusion
here, then why aren't these effects clearly spelled out in physics books?
Many of us do classroom demos to show BP, but I think some of them might
show the CE instead.
What about these, which I sort of put into categories? Which effect
dominates?
perfume atomizer
blow between two hanging cans
spin on baseball pitchMagnus effect (with enhanced boundary layer activation for the golf ball.)
dimples on golf ball
Wiffle ball
shape of plane wingCoanda /Bernoulli.
blow over paper
boomerang
vacuum cleaner and beach ballUnsure of configuration details: vacuum blowing down on beach ball to lift it, or blowing up to suspend it?? etc...
toy blow ball pipe
vertical Dyson fan and balloon
air blower and toilet paper roll
J Denker replied:
What demos illustrate each?
However, he seems to have lost a desired negation, in the paragraph below:Reasonable Bernoulli examples include:
-- ordinary airfoils.
-- Pitot-static system.
-- Magnus effect (spinning cylinder + true airspeed).
-- Venturi geometry (probably).
-- levitating disk, as previously discussed.
In contrast, if it looks like a narrow high-velocity jet impinging
on a curved surface, it's probably Coanda. If the same jet
impinging on a flat surface doesn't produce the effect, it's a
dead giveaway that Coanda is involved.