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Understanding jet noise

S. A. Karabasov
Philosophical Transactions: Mathematical, Physical and Engineering Sciences
Vol. 368, No. 1924, Visions of the future for the Royal Society's 350th anniversary year (13 August 2010), pp. 3593-3608
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/25699188
Page Count: 16
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Understanding jet noise
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Abstract

Jets are one of the most fascinating topics in fluid mechanics. For aeronautics, turbulent jet-noise modelling is particularly challenging, not only because of the poor understanding of high Reynolds number turbulence, but also because of the extremely low acoustic efficiency of high-speed jets. Turbulent jet-noise models starting from the classical Lighthill acoustic analogy to state-of-the art models were considered. No attempt was made to present any complete overview of jet-noise theories. Instead, the aim was to emphasize the importance of sound generation and mean-flow propagation effects, as well as their interference, for the understanding and prediction of jet noise.

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