Mechanical Operations
Ultracentrifuges running at speeds upto 100000 rpm is normally used for the

Dewaxing of lubricating oil
Concentration of rubber latex
Separation of isotopes based on their density or molecular weights difference
Separation of cream from milk

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Mechanical Operations
During agitation of liquids, the

Froude number is independent for the curves between power number and Reynolds number in baffled system
All of these
Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller
Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number

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