The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to___________________?

Question

Accepted Answer

N°. The power number relationship at high Reynolds numbers shows that the power input is proportional to the cube of the rotational speed. Option B suggests a linear relationship which is incorrect for this regime. Option C suggests a quadratic relationship which is incorrect for this regime. Option D suggests a cubic root relationship which is incorrect for this regime.