Hydraulics and Fluid Mechanics in ME
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 x V225 minutes
4 x (225)3/2 minutes
4 (225)1/3 minutes
4 minutes

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Hydraulics and Fluid Mechanics in ME
Mach number is significant in

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
supersonics, as with projectiles and jet propulsion
full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
all of fhe above

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