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When is the fluid called laminar?

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+1 vote
in Fluid Mechanics by (118k points)
When is the fluid called laminar?

(a) Reynolds number is greater than 2000

(b) Reynolds number is less than 2000

(c) The density of the fluid is high

(d) Low viscosity

The question was asked during an online exam.

Question is taken from Universal Velocity Distribution topic in chapter Viscous Flow & Turbulent Flow of Fluid Mechanics

1 Answer

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Best answer
Right option is (b) Reynolds number is less than 2000

The explanation: Reynolds number is a dimensionless quantity. It helps to predict the flow pattern in fluid mechanics. At low Reynolds number, the flow has a very low density, due to which the value of Reynolds number is less than 2000.

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