Propagation of Acoustic Waves in Ducts with Flow Using the Multimodal Formulation

This paper presents a multimodal method for the computation of the acoustic field in an axisymmetric varying duct with or without liner and in the presence of mean flow. The original three-dimensional equations are rearranged into a set of coupled one-dimensional equations by projecting the acoustic...

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Veröffentlicht in:	AIAA journal 2023-06, Vol.61 (6), p.2721-2733
Hauptverfasser:	Mangin, Bruno, Daroukh, Majd, Gabard, Gwénaël
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustic liners Acoustic propagation Acoustic waves Acoustics Basis functions Bessel functions Chebyshev approximation Computational efficiency Computing costs Ducts Engineering Sciences Mathematical functions Mathematical models Physics Polynomials Propagation modes Scattering Sound fields Surface acoustic waves Three dimensional flow Wave propagation
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