Free Bernoulli Pressure Calculator
Apply Bernoulli's equation to find pressure at a second point: P2 = P1 + 0.5*rho*(v1^2 - v2^2) + rho*g*(h1 - h2).
Pa
m/s
m/s
m
m
kg/m3
Pressure at Point 2
90,825.00 Pa
Dynamic Pressure at 12,000.00 Pa
Dynamic Pressure at 212,500.00 Pa
Pressure at Point 2 vs Pressure at Point 1
Bernoulli's Equation
For steady, incompressible, inviscid flow along a streamline, the total energy per unit volume is conserved.
Formula
P1 + 0.5 rho v1^2 + rho g h1 = P2 + 0.5 rho v2^2 + rho g h2
Solving for P2:
P2 = P1 + 0.5 rho (v1^2 - v2^2) + rho g (h1 - h2)
Faster flow means lower pressure (the Venturi effect).
Example Calculation
Water in a horizontal pipe narrows from 2 m/s to 5 m/s. P1 = 101325 Pa.
- 01P2 = P1 + 0.5 * 1000 * (4 - 25) + 0
- 02P2 = 101325 + 500 * (-21)
- 03P2 = 101325 - 10500
- 04P2 = 90 825 Pa
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