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Acoustics in variable area duct - Finite element and finite difference comparisons to experiment

Baumeister, K.J., Astley, R.J., Eversman, W. and White, J. W. (1983) Acoustics in variable area duct - Finite element and finite difference comparisons to experiment AIAA Journal, 21, (2), pp. 193-199. (doi:10.2514/3.8054).

Record type: Article

Abstract

Plane wave sound propagation without flow in a rectangular duct with a converging-diverging area variation is studied experimentally and theoretically. The area variation was of sufficient magnitude to produce large reflections and induce modal scattering. The rms pressure and phase angle on both the flat and curved surface were measured and tabulated. The "steady"-state finite element theory of Astley and Eversman and the transient finite difference theory of White are in good agreement with the data. It is concluded that numerical finite difference and finite element theories appear ideally suited for handling duct propagation problems which encounter large area variations.

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Published date: 1983

Identifiers

Local EPrints ID: 166497
URI: http://eprints.soton.ac.uk/id/eprint/166497
ISSN: 0001-1452
PURE UUID: 0bd6249e-1096-4b14-b212-358b2b28859d

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Date deposited: 29 Oct 2010 08:25
Last modified: 18 Jul 2017 12:25

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Contributors

Author: K.J. Baumeister
Author: R.J. Astley
Author: W. Eversman
Author: J. W. White

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