Question

What is the other name for Stoke’s boundary layer?

(a) Momentum boundary layer

(b) Atmospheric boundary layer

(c) Oscillatory boundary layer

(d) Thermal boundary layer

I had been asked this question during a job interview.

Query is from Turbulent Boundary Layer on a Flat Plate in chapter Boundary Layer Flow & Forces on Sub-merged Bodies of Fluid Mechanics

Answer 1

The correct option is (c) Oscillatory boundary layer

To elaborate: Stoke’s boundary layer is also called as Oscillatory boundary layer. It is a boundary layer that is close to a solid wall. It moves in an oscillatory motion. It arrested by a viscous force acting in the opposite direction.