Question

The laminar boundary layer is a _________

(a) Smooth flow

(b) Rough flow

(c) Uniform flow

(d) Random flow

This question was addressed to me in class test.

Origin of the question is Turbulent Boundary Layer on a Flat Plate in division Boundary Layer Flow & Forces on Sub-merged Bodies of Fluid Mechanics

Answer 1

The correct choice is (a) Smooth flow

The explanation: For a laminar boundary layer the fluid moves in a very smooth flow. The laminar flow creates less skin friction drag. It is a less stable flow. The laminar boundary layer has got an increase in its thickness.