Capillary Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Capillary Number

Capillary number ( \(Ca\) ) (dimensionless number) is the ratio of viscous forces to surface tension forces.

Capillary Number FORMULA

\(Ca = \frac { \mu v }  { \sigma } \)          \( Capillary number  \;=\;  \frac { dynamic \; viscosity  \;\;x\;\;  fluid \; velocity }  { sheat \; tension } \)         

Where:

\(Ca\) = Capillary number

\(\mu\) (Greek symbol mu) = dynamic viscosity

\(v\) = fluid velocity

\(\sigma\) (Greek symbol sigma) = shear tension

 

Tags: Equations for Fluid