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A generalized acoustic analogy

Published online by Cambridge University Press:  02 July 2003

M. E. GOLDSTEIN
Affiliation:
National Aeronautics and Space Administration, Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA

Abstract

The purpose of this article is to show that the Navier–Stokes equations can be rewritten as a set of linearized inhomogeneous Euler equations (in convective form) with source terms that are exactly the same as those that would result from externally imposed shear-stress and energy-flux perturbations. These results are used to develop a mathematical basis for some existing and potential new jet noise models by appropriately choosing the ‘base flow’ about which the linearization is carried out.

Type
Papers
Copyright
© 2003 Cambridge University Press

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