Cavitation Number Vapor Pressure

on . Posted in Pump

   

cavitation Number Vapor Pressure formula

\( p_v =  p - ( Ca \; \rho \; U^2 \;/\; 2 )\)     (Cavitation Number Vapor Pressure)

\( p =   Ca \; \rho \; U^2 \;/\; 2 \; ( 1 - \frac{U}{2} )  \)

\( Ca =   - 2 \; p + 2 \; p_v \;/\; \rho \; U^2 \)

\( \rho =   2 \; \left(  p - p_v \right)  \;/\; Ca \; U^2 \)

\( U =  \sqrt{  2\;  \left(  p - p_v \right)  \;/\; Ca \; \rho }  \)

Symbol English Metric
\( p_v \) = vapor pressure \(lbf\;/\;in^2\)   \(Pa\)
\( p \) = pressure \(lbf\;/\;in^2\)   \(Pa\)
\( Ca \) = Cavitation number \( dimensionless \)
\( \rho \)  (Greek symbol rho) = density of fluid \(lbm\;/\;ft^3\)  \(kg\;/\;m^3\) 
\( U \) = characteristic velocity \(ft\;/\;sec\)  \(m\;/\;s\) 

 

Piping Designer Logo 1

Tags: Pressure Pump