24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-3.4.5

ON THE GENERATION OF SOUND IN A SHEAR FLOW

L. M. B. C. Campos, M. H. Kobayashi*
Instituto Superior Técnico, Secção de Mecânica Aeroespacial, ISR, 1049-001 Lisbon, Portugal; *University of Hawai’I at Manoa, Department of Mechanical Engineering, 2540 Dole Street H302, 96822 Honolulu, HI, USA

Keywords: Sound generation, shear layer, Green function

The Lighthill acoustic analogy describing the generation of sound by turbulence and inhomogeneities in an unbounded medium at rest is extended to a plane unidirectional shear mean flow. Unlike previous attempts at this result elsewhere, the work reported here found no ambiguous terms.

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