Bernoulli's Principle & Fluid Flow

Discover why faster flow means lower pressure — from Venturi tubes to airplane wings

Bernoulli's equation is an energy conservation statement for steady, incompressible flow: the sum of static pressure, dynamic pressure (½ρv²), and hydrostatic pressure (ρgh) remains constant along a streamline. The continuity equation A₁v₁ = A₂v₂ forces fluid to accelerate through a constriction, which Bernoulli's equation then links to a corresponding pressure drop. Airfoil lift arises because the curved upper surface accelerates flow, lowering pressure above the wing.