Cavitation Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Cavitation number, abbreviated Ca, is a dimensionless number that 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

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

Where:

\(\large{ Ca }\) = 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