Strouhal Number

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Strouhal Number

Strouhal number ( \(Sr\) ) (dimensionless number) is used to describe oscillating flow.

Strouhal Number FORMULA

\(\large{ Sr = \frac { f l } {v} }\)         

Where:

\(\large{ Sr }\) = Strouhal number

\(\large{ f }\) = frequency

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

\(\large{ v }\) = flow velocity

 

Tags: Equations for Flow