Laplace Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Laplace number, abbreviated as La, also called Suratman number, abbreviated as Su, a dimensionless numbers, they are used in the charcaterization of free surface fluid dynamics.  It is a ratio of surface tension to the momentum transport inside a fluid.

 

Laplace number calculator

Laplace number formula

\(\large{ La =  \frac { \sigma \; \rho \; l } { \eta^2 }  }\)   

Where:

\(\large{ La }\) = Laplace number

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

\(\large{ l }\) = length

\(\large{ \sigma }\)  (Greek symbol sigma) = surface tension

\(\large{ \eta }\)  (Greek symbol eta) = viscosity of liquid

 

Tags: Equations for Fluid Calculators