Bernoulli / Venturi Flow

Bernoulli equation: P + ½ρv² + ρgh = const. Continuity: A₁v₁ = A₂v₂. At the throat, velocity increases and pressure drops — the Venturi effect. P₁ - P₂ = ½ρ(v₂² - v₁²). Used in carburetors, aspirators, and blood-flow measurement.