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.

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

1.	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.
A.	o ∝ Re-1.0
B.	o ∝ Re0.0
C.	o ∝ Re0.5
D.	o ∝ Re1.0
Answer» C. o ∝ Re0.5

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At low Reynold's number, the power () 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: = ρ/ρ : Power number Re = ρ /μ: Reynold's number is the impeller rotational speed, and is the impeller diameter.
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