4 ms·

That’s not even close to answerable without many more variables specified.

• jacquesm 3y ago
  Not in a quantitative way anyway, but in a qualitative way it is actually trivial because the wind at sea level behaves fairly consistently once you know its speed. Betz basically says you won't be extracting more than 59.3% of the power in the moving air so the remainder will always be available just behind the turbine. Close to the ground wind isn't laminar so what you'll see is that the 'rolling' air will draw in new air from higher layers just behind the machine, a short way inland you'll have a hard time proving there is a windfarm upwind other than through sound and visuals. There is a lot of air moving around (if you could visualize it try thinking of 1 kg bricks spaced out 1 meter in every direction, and all of them are moving except for when there is absolutely no wind) and the tiny little layer that we siphon off some power from is utterly insignificant compared to the whole. https://en.wikipedia.org/wiki/Betz%27s_law https://en.wikipedia.org/wiki/Betz%27s_law
  • bandyaboot 3y ago
    Very interesting. Thanks.