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RESEARCH PAPERS

Interaction of an Acoustic Disturbance and a Two-Dimensional Turbulent Jet: Experimental Data

[+] Author and Article Information
F. O. Thomas, V. W. Goldschmidt

School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907

J. Fluids Eng 105(2), 134-139 (Jun 01, 1983) (6 pages) doi:10.1115/1.3240952 History: Received July 27, 1981; Online October 26, 2009

Abstract

An experimental study was performed to determine the effects a periodic acoustic disturbance had upon a two-dimensional turbulent jet in both the initial and similarity regions. Correlation and energy spectra measurements in the initial region indicate that acoustic forcing within a certain frequency range is capable of restructuring the flow in this region. In particular, these measurements suggest the presence of vortical flow structures arranged symmetrically with respect to the jet centerline. Measurements of the mean and turbulent flow structure in the similarity region of the jet indicate strong acoustically induced effects. Evidence suggests that the interaction effects observed in the similarity region are intimately related to those in the initial region.

Copyright © 1983 by ASME
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