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Theoretical and experimental study of quasisteady‐flow separation within the glottis during phonation. Application to a modified two‐mass model

- X. Pelorson, A. Hirschberg, van Rr René Hassel, Apj Abraham Wijnands, Y. Aurégan
- Mathematics
- 1 December 1994

Most flow models used in numerical simulation of voiced sound production rely, for the sake of simplicity, upon a certain number of assumptions. While most of these assumptions constitute reasonable… Expand

Quasisteady aero-acoustic response of orifices.

- P. Durrieu, G. Hofmans, +4 authors M. Peters
- Mathematics, Medicine
- The Journal of the Acoustical Society of America
- 2 October 2001

The low frequency response of orifices (slit, circular diaphragm, and perforated plate) in the presence of mean flow is well predicted by a quasisteady theory. A refinement is brought to the theory… Expand

The whistling potentiality of an orifice in a confined flow using an energetic criterion

- P. Testud, Y. Aurégan, P. Moussou, A. Hirschberg
- Physics
- 11 September 2009

Using a two-source method, the scattering matrices of 10 sharp-edged thin orifices are measured under different subsonic flow conditions. The data are analysed in terms of net acoustical energy… Expand

Failure of the Ingard-Myers boundary condition for a lined duct: an experimental investigation.

- Y. Renou, Y. Aurégan
- Physics, Medicine
- The Journal of the Acoustical Society of America
- 19 July 2011

This paper deals with experimental investigation of the lined wall boundary condition in flow duct applications such as aircraft engine systems or automobile mufflers. A first experiment, based on a… Expand

SNORING: LINEAR STABILITY ANALYSIS ANDIN-VITROEXPERIMENTS

- Y. Aurégan, C. Depollier
- Mathematics
- 23 November 1995

Abstract A theoretical and experimental study is presented of the aeroelastic instability of the human soft palate, which can explain the occurrence of snoring. The soft palate is modelled by a beam… Expand

PIV and LDV evidence of hydrodynamic instability over a liner in a duct with flow

- D. Marx, Y. Aurégan, H. Bailliet, J. Valière
- Materials Science
- 30 August 2010

The acoustical behavior and the flow in a rectangular lined channel with grazing flow have been investigated. The liner consists of a ceramic structure of parallel square channels and is locally… Expand

Influence of grazing flow and dissipation effects on the acoustic boundary conditions at a lined wall

- Y. Aurégan, R. Starobinski, V. Pagneux
- Physics
- 2 January 2001

The problem of sound propagation near a lined wall taking into account mean shear flow effects and viscous and thermal dissipation is investigated. The method of composite expansion is used to… Expand

Modelling of sound propagation in a non-uniform lined duct using a Multi-Modal Propagation Method

- W. Bi, V. Pagneux, D. Lafarge, Y. Aurégan
- Engineering
- 7 February 2006

Liner non-uniformities, such as distributed impedances, may have a direct influence on the performance of turbofan engine liners. A relevant problem to study these effects is that of sound… Expand

Effect of turbulent eddy viscosity on the unstable surface mode above an acoustic liner

- D. Marx, Y. Aurégan
- Physics
- 22 July 2013

Lined ducts are used to reduce noise radiation from ducts in turbofan engines. In certain conditions they may sustain hydrodynamic instabilities. A local linear stability analysis of the flow in a 2D… Expand

Determination of the acoustical energy dissipation / production potentiality from the acoustical transfer functions of a multiport

- Y. Aurégan, R. Starobinski
- 2009

The acoustic energy conservation law in presence of flow can be very effectively expressed with the help of two variables: the acoustic mass velocity and the acoustic exergy. The minimal and maximal… Expand

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