GATE Fluid Mechanics: Boundary layer, lift and drag – Previous Year Questions

1 GATE previous year questions on Boundary layer, lift and drag (Fluid Mechanics, Civil Engineering) with answers and explanations, from every paper.

1. GATE 2020 CE (CE2) Q34 (1 mark, Numerical answer) – Boundary-layer velocity is u/U =[ y/(2)], with U =0.3 m/s and δ = 1.0 m. Find wall velocity gradient u/ y at y = 0 (s⁻¹), to two decimals.