Hydraulics and Fluid Mechanics in ME
In an immersed body, center of pressure is

at the center of gravity
could be above or below e.g. depending on density of body and liquid
below be center of gravity
above the center of gravity

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Hydraulics and Fluid Mechanics in ME
Mach number is significant in

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

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