Fluid Mechanics - turbulence - vortex

[doubleja]

"the most important unsolved problem of classical physics." - Richard Feynman

"Before I die, I hope that someone will explain quantum mechanics to me. After I die, I hope that God will explain turbulence to me." - Werner Heisenberg

[NoctumDeVir]

@RobotechMacrossGame Yes, i ment C_D.

[ertyqwer]

what's the music? :)

[SlavaVB]

doesnt it seem as if the turbulence is actually reducing the drag here?

[stay1or]

Actually, it probably is, when the flow is separated the drag increases and turbulent flow separates later than laminar flow would. That's why golf balls have dimples, to make the flow turbulent.

[NoctumDeVir]

@SlavaVB It depends on the Reynolds number. For a sphere there's a

range in R, where the drag is minimum (drag crisis regime)