Strouhal Number Calculator

Posted by Dinesh on

Online Strouhal formula calculator to calculate Strouhal Number for oscillating flow mechanism problems.

The Strouhal number (St) is a dimensionless number describing oscillating flow mechanisms. The parameter is named after Vincenc Strouhal, a Czech physicist who experimented in 1878 with wires experiencing vortex shedding and singing in the wind.

Strouhal Number Calculation

Formula:

St=f·LU

where,
f is the frequency of vortex shedding
L is the characteristic length (for example hydraulic diameter, or the airfoil thickness)
U is the flow velocity
St is the Strouhal number (dimensionless)