Riser Vortex Shedding - Strouhal

Vortex-shedding frequency on a cylindrical riser from Strouhal number - basis for VIV fatigue assessment.

RiserVIVStrouhal

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

f_s = St \cdot V / D

Symbol	Meaning	Unit
$St$	Strouhal number
$D$	Riser diameter	m

Source: Blevins - Flow-Induced Vibration

Vortex-shedding frequency on a cylindrical riser from Strouhal number - basis for VIV fatigue assessment.