The hydrodynamic boundary layer thickness is defined as the distance f – McqOptions

MCQOPTIONS

1.	The hydrodynamic boundary layer thickness is defined as the distance from the surface where the
A.	Velocity equals to the local external velocity.
B.	Velocity equals the approach velocity.
C.	Momentum equals 99 % of the momentum of the free stream
D.	Velocity equals 99 % of the local external velocity.
Answer» E.

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