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Critical problems of computational aeroacoustics (1991)

Rogers, Joel C. W.

In: CASI

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Publication Date: 2013-08-31

Description: The aeroacoustics of rigid boundaries is discussed. Lighthill gave a formulation of this problem in which he showed that the sources of the acoustic field were quadrupole in nature. We have preferred a different formulation of the problem, in which the quadrupoles are sources for a nonlinear wave equation, as opposed to the linear one used by Lighthill. This is given here in a figure which also gives further details of a solution procedure for the Euler equations appropriate for the aeroelastic problem and motivated by the analysis of Crow. In accordance with our formulation, we contend that an algorithm for accurate solutions of an inhomogeneous nonlinear wave equation is of prime importance.

Keywords: ACOUSTICS

Type: Old Dominion Univ., NASA/American Society for Engineering Ed; Old Dominion Univ.,

Format: application/pdf

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