A three-dimensional boundary element scheme for acoustic radiation in low mach number flows
A three-dimensional boundary element scheme for acoustic radiation in low mach number flows
A boundary element scheme is proposed for acoustical radiation in moving flows. The scheme relies upon a transformation, valid at low Mach numbers, which permits the case with flow to be restated as an equivalent problem, in the absence of flow but with modified boundary conditions. This restatement of the original problem is then amenable to boundary integral representation and boundary element solution. Results obtained by using this approach are presented for the test case of a pulsating or juddering sphere of finite dimensions in a uniform low Mach number flow. A fully three-dimensional boundary element model is used. The validity of the results is established by comparison with an analytic perturbation solution (where applicable) and by comparison with results from an alternative, axisymmetric numerical scheme.
445-465
Astley, R.J.
cb7fed9f-a96a-4b58-8939-6db1010f9893
Bain, J.G.
e8623c5f-6b0a-4d65-9e0d-efed5eb8d74a
22 September 1986
Astley, R.J.
cb7fed9f-a96a-4b58-8939-6db1010f9893
Bain, J.G.
e8623c5f-6b0a-4d65-9e0d-efed5eb8d74a
Astley, R.J. and Bain, J.G.
(1986)
A three-dimensional boundary element scheme for acoustic radiation in low mach number flows.
Journal of Sound and Vibration, 109 (3), .
(doi:10.1016/S0022-460X(86)80381-9).
Abstract
A boundary element scheme is proposed for acoustical radiation in moving flows. The scheme relies upon a transformation, valid at low Mach numbers, which permits the case with flow to be restated as an equivalent problem, in the absence of flow but with modified boundary conditions. This restatement of the original problem is then amenable to boundary integral representation and boundary element solution. Results obtained by using this approach are presented for the test case of a pulsating or juddering sphere of finite dimensions in a uniform low Mach number flow. A fully three-dimensional boundary element model is used. The validity of the results is established by comparison with an analytic perturbation solution (where applicable) and by comparison with results from an alternative, axisymmetric numerical scheme.
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Published date: 22 September 1986
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Local EPrints ID: 166493
URI: http://eprints.soton.ac.uk/id/eprint/166493
ISSN: 0022-460X
PURE UUID: c4528c4b-af45-462a-9ee3-ff77714d099d
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Date deposited: 29 Oct 2010 08:26
Last modified: 14 Mar 2024 02:13
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Author:
J.G. Bain
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