A Two-dimensional BEM Formulation For Acoustic Radiation Under A Uniform Subsonic Flow
Price
Free (open access)
Transaction
Volume
11
Pages
9
Published
1995
Size
597 kb
Paper DOI
10.2495/BT950231
Copyright
WIT Press
Author(s)
L.A. de Lacerda, L.C. Wrobel & W.J. Mansui
Abstract
This paper presents a BEM formulation for two-dimensional acoustic radiation in a uniform subsonic flow in which the Green's function auto- matically incorporates the convective effect. Because the resulting integral equation involves the derivative of the velocity potential in the flow direc- tion, an approximation is necessary to express this extra variable in terms of the potential and its normal derivative. Numerical results are included to verify the formulation. 1 Introduction The calculation of acoustic fields propagating in subsonic flows and the interaction of such fields wit
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