A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is

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Q.) A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is

(A) ½w² . R² . ρL

(B) ½w² . δ² . ρL

(D) ½w² . R . ρL(R + 2δ)

Correct answer : Option (C) - ½w² . δρL (2R + δ)

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