NDLI: The Effect of Sound on Vortex Shedding From Single and Tandem Cylinders

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Joseph, W. Hall Ziada, Samir David, S. Weaver
Copyright Year	2002
Abstract	A single cylinder and two tandem cylinders configurations with longitudinal pitch ratios L/D = 1.75 and 2.5 were rigidly mounted in an open circuit windtunnel and a sound field was applied so that the acoustic particle velocity was normal to both the cylinder axis and the mean flow velocity. Tests were performed for a Reynolds number range of 5000 < ReD < 24000. The effect of sound on the vortex shedding was investigated by instrumenting the cylinders with pressure taps and hot-wire probes. These tests show that applied sound can entrain and shift the natural vortex shedding frequency to the frequency of excitation and produce nonlinearities in the wake. The lock-in envelope for the tandem cylinders is considerably larger than for the single cylinder. The lock-in range for the smaller tandem cylinder spacing (L/D = 1.75) was broader still than either the single cylinder, or the L/D = 2.5 tandem cylinder case.
Sponsorship	Applied Mechanics Division
Starting Page	225
Ending Page	236
Page Count	12
File Format	PDF
ISBN	0791836592
DOI	10.1115/IMECE2002-32164
Volume Number	5th International Symposium on Fluid Structure Interaction, Aeroelasticity, and Flow Induced Vibration and Noise
Conference Proceedings	ASME 2002 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2002-11-17
Publisher Place	New Orleans, Louisiana, USA
Access Restriction	Subscribed
Subject Keyword	Vortex shedding Circuits Reynolds number Locks (waterways) Acoustics Wire Flow (dynamics) Pressure Particulate matter Wakes Excitation Probes Cylinders
Content Type	Text
Resource Type	Article

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