Hydraulics and Fluid Mechanics in ME
Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)

(w Q ηo) / Hm
(w Hm) / (Q × ηo)
(w Hm Q) / ηo
(w Q) / (Hm × ηo)

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Hydraulics and Fluid Mechanics in ME
In an inward flow reaction turbine

The water flows parallel to the axis of the wheel
The water enters the wheel at the outer periphery and then flows towards the center of the wheel
The water enters at the center of the wheel and then flows towards the outer periphery of the wheel
The flow of water is partly radial and partly axial

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