论文信息 - A time reversal method coupled with complex differentiation for the study of aeroacoustic sources

A time reversal method coupled with complex differentiation for the study of aeroacoustic sources

An original methodology for the localization of aeroacoustic sources has been recently developped. 1 This method is based on a coupled time reversal / complex differentiation approach. In this paper, the method is recalled. Then it is illustrated with two original cases: noise generation by mass injection and noise generation by flow instabilities.

[1] Mickael Tanter,et al. Time-reversed acoustics , 2000 .

[2] Pierre Sagaut,et al. A coupled time-reversal/complex differentiation method for aeroacoustic sensitivity analysis: towards a source detection procedure , 2009, Journal of Fluid Mechanics.

[3] Pierre Sagaut,et al. Direct sensitivity analysis for smooth unsteady compressible flows using complex differentiation , 2007 .

[4] J. N. Lyness,et al. Numerical Differentiation of Analytic Functions , 1967 .

[5] S. Osher,et al. Efficient implementation of essentially non-oscillatory shock-capturing schemes,II , 1989 .

[6] L. Kovasznay. Turbulence in Supersonic Flow , 1953 .

[7] P. Moin,et al. Sound generation in a mixing layer , 1997, Journal of Fluid Mechanics.

[8] Pierre Sagaut,et al. Pseudo‐characteristic formulation and dynamic boundary conditions for computational aeroacoustics , 2007 .

[9] Jörn Sesterhenn,et al. A characteristic-type formulation of the Navier–Stokes equations for high order upwind schemes , 2000 .

[10] C. Bogey,et al. An analysis of the correlations between the turbulent flow and the sound pressure fields of subsonic jets , 2007, Journal of Fluid Mechanics.