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

\( Sr = \frac { f l } {v} \)          \( Strouhal \; number  \;=\;   \frac { frequency  \;\;x\;\;  characteristic \; length } { flow \; velocity} \)

Where:

\(Sr\) = Strouhal number

\(f\) = frequency

\(l\) = characteristic length

\(v\) = flow velocity

 

Tags: Equations for Flow