An experimental study of the acoustic oscillations by flows over cavities

X. Amandolèse 1 Pascal Hémon 2 C. Regardin 1
1 Institut Aérotechnique, 15, rue Marat, Saint-Cyr l'Ecole F-78210, France
2 LadHyX - Laboratoire d'hydrodynamique
Abstract : We present an experimental study of acoustic oscillations induced by an internal airflow over a shallow and a deep cavity. The Kelvin-Helmholtz instability is interacting with an acoustic mode of the cavity or of the duct, leading to a resonance which produces a very high sound level. The influence of upstream boundary layer thickness and neck thickness is studied. Some results obtained by modifying the upstream lip shape, by crenel addition, are also given. © 2004 by ASME.
Type de document :
Article dans une revue
Journal of Vibration and Acoustics, American Society of Mechanical Engineers, 2004, 126 (2), pp.190-195. 〈10.1115/1.1688761〉
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Contributeur : Denis Roura <>
Soumis le : jeudi 17 juillet 2014 - 13:09:24
Dernière modification le : jeudi 12 avril 2018 - 01:49:15

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X. Amandolèse, Pascal Hémon, C. Regardin. An experimental study of the acoustic oscillations by flows over cavities. Journal of Vibration and Acoustics, American Society of Mechanical Engineers, 2004, 126 (2), pp.190-195. 〈10.1115/1.1688761〉. 〈hal-01024950〉

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