engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Fluid Mechanics Boundary Layer Theory
Boundary-Layer Thickness(δ) is the distance from the surface of the solid body in the direction perpendicular to flow, where the velocity of the fluid is equal to:
1
Free stream velocity
2
1.2 times the free stream velocity
3
0.99 times the free stream velocity
4
None of the above