Bernoulli Pressure Change
Estimate downstream pressure from speed and elevation changes.
Your numbers
Downstream pressure
Steady, incompressible, inviscid flow along one streamline; no pump, turbine or pipe loss. Does not check cavitation.
Scenario comparison
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Formula
P₂=P₁+½ρ(v₁²−v₂²)−ρg(h₂−h₁)
Estimate downstream pressure from speed and elevation changes.
Worked example
- Density (kg/m³)
- 1000
- Upstream absolute pressure (Pa)
- 200000
- Upstream speed (m/s)
- 2
- Downstream speed (m/s)
- 4
- Downstream elevation minus upstream (m)
- 1
- Gravity (m/s²)
- 9.80665
- Downstream pressure
- 184,193.35 Pa
Scope and limitations
Steady, incompressible, inviscid flow along one streamline; no pump, turbine or pipe loss. Does not check cavitation.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
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Formula version: 4e08cbeb364e · Example checked: