This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Identification of AeroAcoustic Noise Sources Using Inverse Boundary Element Method
Technical Paper
2005-01-2497
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper explores the use of inverse boundary element method to identify aeroacoustic noise sources. In the proposed approach, sound pressure at a few locations out of the flow field is measured, followed by the reconstruction of acoustic particle velocity on the surface where the noise is generated. Using this reconstructed acoustic particle velocity, the acoustic response anywhere in the field, including in the flow field, can be predicted. This approach is advantageous since only a small number of measurement points are needed and can be done outside of the flow field, and a relatively fast computational time. As an example, a prediction of vortex shedding noise from a circular cylinder is presented.
Recommended Content
Authors
Citation
Martinus, F., Herrin, D., Tao, Z., and Seybert, A., "Identification of AeroAcoustic Noise Sources Using Inverse Boundary Element Method," SAE Technical Paper 2005-01-2497, 2005, https://doi.org/10.4271/2005-01-2497.Also In
References
- Wu, T.W. Boundary Element Acoustics WIT Press Southampton, Boston 2000
- Veronesi, W. A. Maynard, J. D. “Digital Holographic Reconstruction of Sources with Arbitrarily Shaped Surfaces” J. Acoust. Soc. Am. 85 588 598 1989
- Bai, M. R. “Application of BEM-based Acoustic Holography to Radiation Analysis of Sound Sources with Arbitrarily Shaped Geometries” J. Acoust. Soc. Am. 92 533 549 1992
- Kim, B. K. Ih, J. G. “On the Reconstruction of the Vibro-Acoustics Field Over the Surface Enclosing an Interior Space using the Boundary Element Method” J. Acoust. Soc. Am. 100 3003 3015 1996
- Zhang, Z. et. al. “A Computational Acoustic Field Reconstruction Process Based on an Indirect Boundary Element Formulation” J. Acoust. Soc. Am. 108 2167 2178 2000
- Seybert, A. F. Martinus, F. “Forward and Inverse Numerical Acoustics for NVH Applications” 9th International Congress on Sound and Vibration Orlando, Florida July 8-11 2002
- Schuhmacher, A. et. al. “Sound Source Reconstruction Using Inverse Boundary Element Calculations” J. Acoust. Soc. Am. 113 1 114 127 2003
- Williams, E. G. et. al. “Interior Near-Field Acoustical Holography in Flight” J. Acoust. Soc. Am. 108 4 1451 1463 2000
- Seybert, A. F. Ross, D. F. “Experimental Determination of Acoustic Properties using a Two-Microphone Random-Excitation Technique” J. Acoust. Soc. Am. 61 1362 1370 1977
- Demmel, J. W. Applied Numerical Linear Algebra University of California, SIAM Publishing Co. 1997
- Martinus, F. Herrin, D. W. Seybert, A. F. “Practical Considerations in Reconstructing the Surface Vibration using Inverse Numerical Acoustics” SAE Noise and Vibration Conference, 2003-01-1456 Traverse City, Michigan May 5-8 2003
- Tickonov, A.N. “Solution of Incorrectly Formulated Problems and the Regularization Method” 151 501 504 Soviet Math. Dokl 4 1035 1038 1963
- Williams, E. G. et. al. “Fast Fourier Transform and Singular Value Decomposition Formulations for Patch Nearfield Acoustical Holography” J. Acoust. Soc. Am. 114 3 1322 1332 2003
- Wu, S.F. “Hybrid Near-Field Acoustic Holography” J. Acoust. Soc. Am. 115 1 207 217 2004
- Kang, S. C. Ih, J. G. “The Use of Partially Measured Source Data in Near-Field Acoustical Holography Based on the BEM” J. Acoust. Soc. Am. 107 5 2472 2479 2000
- Kang, S. C Ih, J. G. “Use of Nonsingular Boundary Integral Formulation for Reducing Errors due to Near-Field Measurements in the Boundary Element Method Based Near-Field Acoustic Holography” J. Acoust. Soc. Am. 109 4 1320 1328 2001
- Lighthill, M. J. “On Sound Generated Aerodnamically I. General theory” Proceedings of the Royal Society of London, Series A, Mathematical and Physical Sciences 1107 564 587 1952
- Lighthill, M. J. “On Sound Generated Aerodynamically II. Turbulence as a Source of Sound” Proceedings of the Royal Society of London, Series A, Mathematical and Physical Sciences 1148 1 32 1952
- Howe, M. S. “Trailing Edge Noise at Low Mach Numbers” Journal of Sound and Vibration 225 2 211 238 1998
- Bearman, P. W. “Vortex Shedding from Oscillating Bluff Bodies” Annual Review of Fluid Mechanics 16 195 222 1984
- Sarpkaya, T. “Vortex-Induced Oscillations” Journal of Applied Mechanics 46 241 258 1979
- Brika, D. Laneville, A. “Vortex-Induced Vibrations of a Long Flexible Circular Cylinder” Journal of Fluid Mechanics 250 481 508 1993
- Govardhan, R. Williamson, C. H. K. “Modes of Vortex Formation and Frequency Response for a Freely-Vibrating Cylinder” Journal of Fluid Mechanics 420 85 103 2000
- Parker, R. “Resonance Effects in Wake Shedding from Parallel Plates: Some Experimental Observations” Journal of Sound and Vibration 4 1 62 72 1966
- Parker, R. “Resonance Effecs in Wake Shedding from Parallel Plates: Calculation of Resonant Frequencies” Journal of Sound and Vibration 5 2 330 343 1967
- Fahy, F. Foundation of Engineering Acoustics Academic Press 2001