Hydraulics and Fluid Mechanics in ME
The power developed by a turbine is (where H = Head of water under which the turbine is working)

Inversely proportional to H1/2
Directly proportional to H3/2
Directly proportional to H1/2
Inversely proportional to H3/2

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Hydraulics and Fluid Mechanics in ME
Reynolds number is significant in

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
All of these
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
supersonics, as with projectile and jet propulsion

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