Bernoulli's Principle: As flow speeds up over a convex surface (such as the upper camber of an airfoil), fluid kinetic energy increases while local static pressure drops (ΔP = ½ρ(v₁² - v₂²)). This static pressure differential generates net lift.
Coandă Effect & Boundary Layer Attachment: Viscous forces cause fluid streams to stay attached to adjacent curved solid surfaces. Higher angles of attack increase adverse pressure gradients, eventually triggering boundary layer separation and stall turbulence in the wake.