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Bernoulli's equation relates pressure, kinetic energy, and potential energy in flowing fluids. It explains how airfoils generate lift and how pumps function.
Formel
The calculator applies P₁ + ½ρv₁² + ρgh₁ = P₂ + ½ρv₂² + ρgh₂
Trin-for-trin guide
- 1Enter pressure, velocity, height, and fluid density at two points
- 2The calculator applies P₁ + ½ρv₁² + ρgh₁ = P₂ + ½ρv₂² + ρgh₂
- 3Results show energy conservation in fluid flow
Løste eksempler
Input
P₁ = 101.3 kPa, v₁ = 0, z₁ = 0, P₂ = ?, v₂ = 10 m/s, ρ = 1 kg/m³
Resultat
P₂ ≈ 101.3 - 50 = 101.25 kPa
Lower pressure in moving fluid
Almindelige fejl at undgå
- ✕Applying Bernoulli to compressible gases without corrections
- ✕Neglecting elevation terms in vertical flow
Ofte stillede spørgsmål
Why does faster-moving water have lower pressure?
Energy is conserved; faster kinetic energy means less pressure potential energy.
How do airplane wings use Bernoulli's principle?
Wings are curved to make air flow faster on top, creating lower pressure and generating lift.
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