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Fluid Mechanics

Displacement Thickness ,Momentum Thickness and Energy Thickness

The displacem...

Question

The displacement thickness of a boundary layer is

A

The distance to the point where

\frac{v}{V} = 0.99

.

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B

Distance where the velocity 'v' is equal to the shear velocity V', that is,where v = V.

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C

The distance by which the main flow is to be shifted from the boundary to maintain the continuity equation.

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D

One half the actual thickness of the boundary layer.

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Solution

The correct option is C The distance by which the main flow is to be shifted from the boundary to maintain the continuity equation.
The distance by which the main flow is to be shifted from the boundary to maintain the continuity equation.

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