Turbulence trailing-edge noise at low mach number

Sung Ryong Koh, Kang Wook Chang, Young J. Moon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Turbulence trailing-edge noise at low Mach numbers is computationally predicted by the linearized perturbed compressible equations(LPCE), based on solutions of incompressible large eddy simulation(LES) for a turbulent boundary layer past the trailing-edge at Re=1350 based on the momentum thickness. The total derivatives of hydrodynamic pressure act as noise sources in the acoustic formulation, which is computed by a sixth-order compact spatial discretization scheme and a four-stage Runge-Kutta time advancing method. Statistical properties of turbulent boundary layer are examined with spectral analysis of wall pressure fluctuations, and the acoustic field is analyzed with cross spectral data of acoustic properties, in order to identify the trailing-edge noise sources. The broadband noise spectra obtained by LPCE are compared with the analytical predictions of Howe and Casper & Farassat.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference
Pages2199-2207
Number of pages9
Publication statusPublished - 2005 Dec 29
EventCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference - Monterey, CA, United States
Duration: 2005 Mar 232005 Mar 25

Publication series

NameCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference
Volume3

Other

OtherCollection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference
CountryUnited States
CityMonterey, CA
Period05/3/2305/3/25

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Koh, S. R., Chang, K. W., & Moon, Y. J. (2005). Turbulence trailing-edge noise at low mach number. In Collection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference (pp. 2199-2207). (Collection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference; Vol. 3).