(Solved by Humans)-Ekman (Ek) and Rossby (Ro) numbers are of importance in rotating
Question
Ekman (Ek) and Rossby (Ro) numbers are of importance in rotating flows.[1]Ekman number is a measure of the ratio between frictional (viscous) and Coriolis (fictional) forces on a fluid element; Rossby number correspondingly between inertial and Coriolis forces. Define these two numbers if ? is a characteristic angular rate of rotation (characteristic velocity U; length L).
Coriolis acceleration: 2? ?V .
[1] Ekman and Rossby were Swedes; Vagn Walfrid Ekman (1874?1954) professor at Lund University 1910?1939.
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