Experimental Studies on Vortex Shedding Frequency of a Bluff Body in a Pulsating Flow : Equilateral Triangular Cylinder

Abstract

Vortex shedding frequency was measured downstream of the equilateral triangular cylinder in a pulsating flow. A hot-wire anemometer was used for the velocity measurement. The Strouhal number based on the shedding frequency was substantially higher than that for the steady flow. Spectral components other than basic shedding frequency were observed to show significant levels as the pulsation amplitude of the flow increased.