Hydraulics and Fluid Mechanics in ME
The fluid forces considered in the Navier Stokes equation are

gravity, pressure and turbulent
pressure, viscous and turbulent
gravity, viscous and turbulent
gravity, pressure and viscous

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Hydraulics and Fluid Mechanics in ME
Cavitation will begin when

pressure is increased
pressure becomes more than critical pressure
the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
flow is increased

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Hydraulics and Fluid Mechanics in ME
Surface tension

Is a function of the curvature of the interface
Decreases with fall in temperature
Acts in the plane of the interface normal to any line in the surface
Is also known as capillarity

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