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Fundamentals
Physical Basis of Hydrodynamic Cavitation Generation
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Nomenclature
The following nomenclature defines the symbols and abbreviations used in this article. Unless otherwise stated, quantities are expressed in SI units.
| Symbol | Definition | SI unit or status |
|---|---|---|
| A | Flow cross sectional area | m² |
| Pressure recovery coefficient | dimensionless | |
| D | Characteristic hydraulic diameter | m |
| Input energy | J | |
| Eu | Euler number | dimensionless |
| g | Gravitational acceleration | m s⁻² |
| Irreversible head loss | m | |
| ṁ | Mass flow rate | kg s⁻¹ |
| p | Absolute static pressure | Pa |
| Reference pressure used in a cavitation number | Pa | |
| Saturation vapor pressure | Pa | |
| Electrical input power | W | |
| Q | Volumetric flow rate | m³ s⁻¹ |
| Re | Reynolds number | dimensionless |
| U | Mean liquid velocity | m s⁻¹ |
| Reference velocity | m s⁻¹ | |
| We | Weber number | dimensionless |
| Y | Energy normalized treatment yield | application dependent |
| z | Elevation relative to a datum | m |