Project ForgeFluid Mechanics
Mechanical Operations
GATE 2009
Medium
For a mixing tank operating in the laminar regime, the power number varies with the Reynolds number (Re) as
- ARe^(−1/2)
- BRe^(1/2)
- CRe
- Re⁻¹
Explanation
In the laminar regime, mixing power is viscosity-dominated (P∝μN²D³), so the power number Np=P/(ρN³D⁵) is inversely proportional to Re.
Source: GATE CH 2009 (2009)
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