Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
I admit to having been cursory in my reading, and now being confused. Aren't both the laminar and turbulent boundary layers lower limits - and the turbulent one being lower? I would expect the flow to be laminar or turbulent depending on weather (on water, this includes the waves) and the surrounding surface, and the laminar boundary layer as the lower limit.

On the other hand, larger-scale turbulence and differing wind speeds might be a limit on rotor diameter indepentently of height.

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Thu Feb 9th, 2006 at 07:46:05 AM EST
[ Parent ]
The flow is laminar at low Reynolds numbers, and turbulent at high Reynolds numbers. For our purposes, the Reynolds number is proportional to wind speed and distance to the ground.

A society committed to the notion that government is always bad will have bad government. And it doesn't have to be that way. — Paul Krugman
by Carrie (migeru at eurotrib dot com) on Thu Feb 9th, 2006 at 08:04:45 AM EST
[ Parent ]


Occasional Series