Physics · Fluid Mechanics
Why does the velocity of a fluid within the boundary layer start from zero at the surface and gradually increase to the free-stream velocity?
- 1Due to the effect of turbulence near the surface.
- 2Because of the no-slip condition imposed by the surface.✓
- 3As a result of the high-pressure gradient near the surface.
- 4Due to the constant acceleration caused by surface friction.
Correct answer
Because of the no-slip condition imposed by the surface.
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