Fluid Dynamics
Cavitation Number Simulator
Evaluate the potential for cavitation in pipe flows. Adjust fluid density, local pressure, vapor pressure, and velocity to visualize single-phase vs cavitating flow regimes.
State
Stable
Moderate Risk
Fluid Type
Water
ρ: 1000 kg/m³
Output
CSV
Export ready
Parameters
Fluid preset
Velocity sweep
Fluid Governing Equations
Cavitation Number
σ = (p - pv) / (½·ρ·V²)
Dynamic Pressure
q = ½·ρ·V²
Cavitation number (σ) relates the difference between local absolute pressure (p) and vapor pressure (pv) to the dynamic pressure of the flow.
Cavitation damage occurs when σ is below the critical threshold (σ < 1.0) as vapor bubbles form and collapse violently.
Flow Chamber Vis
Cavitation Number
1.980
Dynamic Pressure
50.0kPa
Local Pressure
101.3kPa
Risk Status
Moderate Risk
Cavitation Number vs Velocity
Velocity Matrix
| Velocity (m/s) | Dyn. Pressure (kPa) | Cavitation No. (σ) | Status |
|---|---|---|---|
| 4 m/s | 8 kPa | 12.373 | Safe |
| 8 m/s | 32 kPa | 3.093 | Safe |
| 12 m/s | 72 kPa | 1.375 | Moderate Risk |
| 16 m/s | 128 kPa | 0.773 | High Risk |
| 20 m/s | 200 kPa | 0.495 | High Risk |
| 24 m/s | 288 kPa | 0.344 | High Risk |
| 28 m/s | 392 kPa | 0.253 | High Risk |
| 32 m/s | 512 kPa | 0.193 | High Risk |
| 36 m/s | 648 kPa | 0.153 | High Risk |
| 40 m/s | 800 kPa | 0.124 | High Risk |