Laplace Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Laplace number, abbreviated as La, also called Suratman number, abbreviated as Su, are both dimensionless numbers and 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

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


\(\large{ La }\) = 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