At low Reynold's number, the power (P) required for agitating a fluid in a stirr

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At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter.

Options:

A . Po ∝ Re-1.0

B . Po ∝ Re0.0

C . Po ∝ Re0.5

D . Po ∝ Re1.0

Answer: Option B

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