.The displacement thickness of a boundary layer is

1.	.The displacement thickness of a boundary layer is
A.	The distance to the point where (v/V) = 0.99
B.	the distance where the velocity v is equal to the shear velocity V‚àó that is where v = V‚àó
C.	the distance by which the main flow is to be shifted from the boundary to maintain the continuity equation
D.	one-half the actual thickness of the boundary layer
Answer» B. the distance where the velocity v is equal to the shear velocity V‚àó that is where v = V‚àó

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.The displacement thickness of a boundary layer is

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