Mechanics · fluids

Bernoulli's Equation

Relates pressure, elevation, and speed along a streamline.

P + ρgy + ½ρv² = constant

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Variables

P: pressurePa
ρ: fluid densitykg/m³
g: gravitational field strengthm/s²
y: elevationm
v: flow speedm/s

Conditions / notes

Applies along a streamline for steady, incompressible, non-viscous flow.

Reference details

Subject: Mechanics
Topic: fluids
Plain text: P + rho g y + 1/2 rho v^2 = constant