Cavitation Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Cavitation number, abbreviated Ca, a dimensionless number, expresses the relationship between the difference of a local absolute pressure from the vapor pressure and the kinetic energy per volume.


Cavitation Number Calculator


Cavitation Number formulas

\(\large{ Ca = \frac { 2\; \left(p \;-\;p_v \right)   } {\rho\; U^2}  }\)   
\(\large{Ca = \frac { \left(p \;-\;p_v \right)   } { \frac {1}{2} \; \rho\; U^2}  }\)    


\(\large{ Ca }\) = Cavitation number

\(\large{ U }\) = characteristic velocity

\(\large{ \rho }\)  (Greek symbol rho) = density of fluid

\(\large{ p }\) = local pressure

\(\large{ p_v }\) = vapor pressure



Tags: Equations for Pressure Equations for Pumps Calculators