Aerodynamic noise prediction for long-span bodies

J. H. Seo, K. W. Chang, Young June Moon

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

8 Citations (Scopus)

Abstract

A prediction method for aerodynamic noise from long-span bodies is proposed. The present method is based on the hybrid method, and consists of (i) incompressible large eddy simulation (LES), (ii) linearized perturbed compressible equations (LPCE) for 2D acoustic field at spanwise wave number, kz=0, (iii) 2D Kirchhoff method, Oberai's 3D-correction for spectral acoustic pressure at the far-field, and (iv) estimation of the far-field SPL for a long-span body with considering spanwise coherence function. In the present study, accuracy of the hybrid methods is assessed by considering turbulent flow noise problems for a fundamental aerodynamic body with long span. The nose from a circular cylinder with 30D span at ReD=4.6×104 and M=0.21 is predicted with the present methodology. Aerodynamic and aeroacoustic results are compared with the experimental data. Also, fundamental issues on computations of acoustic field, and estimation methods for SPL will be discussed in conjunction with the proper flow physics.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference
Pages2151-2166
Number of pages16
Volume4
Publication statusPublished - 2006 Dec 27
Event12th AIAA/CEAS Aeroacoustics Conference - Cambridge, MA, United States
Duration: 2006 May 82006 May 10

Other

Other12th AIAA/CEAS Aeroacoustics Conference
CountryUnited States
CityCambridge, MA
Period06/5/806/5/10

Fingerprint

Aerodynamics
Acoustic fields
Aeroacoustics
Large eddy simulation
Circular cylinders
Turbulent flow
Physics
Acoustics

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Seo, J. H., Chang, K. W., & Moon, Y. J. (2006). Aerodynamic noise prediction for long-span bodies. In Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference (Vol. 4, pp. 2151-2166)

Aerodynamic noise prediction for long-span bodies. / Seo, J. H.; Chang, K. W.; Moon, Young June.

Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference. Vol. 4 2006. p. 2151-2166.

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

Seo, JH, Chang, KW & Moon, YJ 2006, Aerodynamic noise prediction for long-span bodies. in Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference. vol. 4, pp. 2151-2166, 12th AIAA/CEAS Aeroacoustics Conference, Cambridge, MA, United States, 06/5/8.
Seo JH, Chang KW, Moon YJ. Aerodynamic noise prediction for long-span bodies. In Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference. Vol. 4. 2006. p. 2151-2166
Seo, J. H. ; Chang, K. W. ; Moon, Young June. / Aerodynamic noise prediction for long-span bodies. Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference. Vol. 4 2006. pp. 2151-2166
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