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Published February 2000 | Published
Journal Article Open

Application of Lighthill's Equation to a Mach 1.92 Turbulent Jet

Abstract

It has often been suggested that simulations of turbulent jets could provide the necessary sound source information for jet noise predictions via Lighthill's acoustic analogy. Such an application of Lighthill's equation is useful for two reasons. First, it provides a framework for identifying and modeling acoustic sources in a turbulent flow. Second, it may provide a less expensive means of computing the sound generated by turbulent flows because the flow equations would need to be computed only in the source region.

Additional Information

© 1999 by T. Colonius and J. B. Freund. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Received 29 May 1999; revision received 15 September 1999; accepted for publication 17 September 1999. The first author acknowledges the support of the National Science Foundation,under Grant CTS-9501349. The work was conducted as part of the 1998 Center for Turbulence Research Summer Program, and the authors gratefully acknowledge many helpful comments from Sanjiva Lele and Parviz Moin.

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August 19, 2023
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