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Eddy viscosity is a turbulent transfer of_________ (a)Fluid

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in Fluid Mechanics by (118k points)
Eddy viscosity is a turbulent transfer of_________

(a) Fluid

(b) Heat

(c) Momentum

(d) Pressure

This question was addressed to me in an interview for job.

The query is from Universal Velocity Distribution topic in section Viscous Flow & Turbulent Flow of Fluid Mechanics

1 Answer

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Best answer
The correct answer is (c) Momentum

The best I can explain: Eddy viscosity is a turbulent transfer of momentum by eddies. It gives rise to an internal fluid friction. It is in analogous to the action of molecular viscosity in a laminar fluid flow. Eddy viscosity takes place on a large scale.

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