Ericksen Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Ericksen number, abbreviated as Er, is a dimensionless number giving the ratio of the viscous to elastic forces.

Ericksen Number FORMULA

\(\large{ Er = \frac { \eta \; v \; l  } {E}   }\)

Where:

\(\large{ Er }\) = Ericksen number

\(\large{ E }\) = elasticity

\(\large{ l }\) = length scale

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

\(\large{ v }\) = bulk fluid velocity

 

Tags: Equations for Force