Pressure Drop Calculator (Bernoulli)
Calculate pressure change using Bernoulli's equation. Enter initial pressure, two velocities, and fluid density.
How to Use the Pressure Drop Calculator
- Enter the initial pressure at point 1 in pascals.
- Enter the flow velocities at point 1 and point 2 in m/s.
- Enter the fluid density (water ≈ 998 kg/m³, air ≈ 1.225 kg/m³).
Référence rapide
| De | Vers |
|---|---|
| Water: v₁=1, v₂=3 m/s, P₁=200 kPa | P₂ ≈ 196 kPa |
| Air: v₁=10, v₂=30 m/s, P₁=101 kPa | P₂ ≈ 100.5 kPa |
| 1 atm | 101,325 Pa |
| 1 bar | 100,000 Pa |
Cas d'utilisation
- •Designing pipe systems and nozzles.
- •Analyzing airfoil lift in aerodynamics.
- •Calculating venturi meter flow rates.
Formule
P₁ + ½ρv₁² = P₂ + ½ρv₂² → P₂ = P₁ + ½ρ(v₁² − v₂²), for horizontal flow at constant elevation.
Questions fréquemment posées
What is Bernoulli's principle?
It states that in a steady, inviscid flow, an increase in velocity causes a decrease in pressure and vice versa.
What are the assumptions?
This calculator assumes steady, incompressible, inviscid flow at constant elevation (no height change).
Is this calculator free?
Yes, all OhMyCalc calculators are completely free.