Acoustic Interactions With Turbulent Jets

[+] Author and Article Information
C. D. Simcox

The Boeing Co., Renton, Wash

R. F. Hoglund

Atlantic Research Corp., Alexandria, Va.

J. Basic Eng 93(1), 42-46 (Mar 01, 1971) (5 pages) doi:10.1115/1.3425180 History: Received April 02, 1970; Online October 27, 2010


The interaction of a monochromatic acoustic wave with a fluctuating vorticity field is considered. The vorticity is first considered as varying harmonically both in time and space. The results show that significant changes in the time-averaged vorticity can occur. The changes are found to result from a rapid and repeated stretching and convection of the existing vorticity field by the applied acoustic field. By Fourier analysis this is extended to spectral relations to account for acoustic-turbulent interactions. The results of the study provide a consistent explanation of experimentally observed acoustic-turbulent interactions in jets, which at first appear to be contradictory.

Copyright © 1971 by ASME
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