Hydraulics and Fluid Mechanics in ME
Froude number is significant in

Supersonics, as with projectile and jet propulsion
All of the listed here
Simultaneous motion through two fluids where there is a surface of discontinuity, gravity forces, and wave making effect, as with ship's hulls
Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

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Hydraulics and Fluid Mechanics in ME
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

(Ax̅/IG) + x̅
(IG/x̅) - Ax̅
(IG/Ax̅) + x̅
(IG/Ax̅) - x̅

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

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

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