Strouhal Number

Written by Jerry Ratzlaff. Posted in Dimensionless Numbers

Strouhal Number is a dimensionless number used to describe oscillating flow.

FORMULA

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

Where:

\(Sr\) = Strouhal Number

\(f\) = frequency

\(l\) = characteristic length

\(v\) = flow velocity