Phase-resolved PIV measurements of flow over three unevenly spaced cylinders and its coupling with acoustic resonance

Frequency lock-in mechanism in flow-induced acoustic resonance of a cylinder in a flow duct

“…Extensive experimental results reveal that the acoustic resonance is commonly excited by the vortex shedding with Reynolds numbers ranging from 10 4 to 10 5 (Mohany & Ziada 2009, 2011Arafa & Mohany 2019;Shaaban & Mohany 2019). The wake flow behind the cylinder is essentially three-dimensional (3-D), however, during the acoustic resonance the wake flow becomes predominantly two-dimensional (2-D) as the vortex shedding along the spanwise direction is highly synchronized by the resonant sound (Blevins 1985;Mohany & Ziada 2011).…”