Cavitation Number Calculator
Compute cavitation number σ = (p−p_v)/(½ρv²).
Input Data
Input Local pressure p.
Pa
Input Vapor pressure p_v.
Pa
Input Density ρ.
kg/m³
Input Velocity v.
m/s
Results
1.97972
σ = (p−p_v)/(½ρv²) = 1.979720
At a glance:Cavitation Number Calculator: enter parameters to compute results; complements related calculators.
Formula
σ = (p − p_v) / (½ ρ v²)
small σ indicates cavitation risk
How to Use
- Enter local pressure p, vapor pressure p_v, density ρ, velocity v.
- Get cavitation number σ.
Case Studies
Water 20°C, 10 m/s
p=101325, p_v=2339 → σ≈1.98.
FAQ
Threshold?
Geometry-dependent; propellers cavitate near σ<0.2.
Related Tools
References
Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.