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Characterization of Buffeting Noise Through a Rear Window in an Automobile Using LBM
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 Title & Authors
Characterization of Buffeting Noise Through a Rear Window in an Automobile Using LBM
Lee, Songjune; Choi, Hyunggyu; Cho, Munhwan; Ih, Kang-duck; Cheong, Cheolung;
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Buffeting noise through a rear window in an automobile is investigated by using lattice Boltzmann method. The generation mechanism of the buffeting noise can be understood as the resonance mechanism in a Helmholtz resonator, which is driven by the convecting vortex in a shear-layer flow over the neck of the resonator. Two methods to suppress the buffeting noise are proposed, and their effects are quantitatively assessed. Opening front window reduces the observed buffeting tonal noise by 25 dB and the overall SPL by 4 dB, and the installation of a Helmholtz resonator acting as a dynamic damper reduces the tonal component that by 35 dB and the overall SPL by 10 dB.
Lattice Boltzmann Method;Buffeting Noise;Helmholtz Resonator;Cavity;
 Cited by
파수-주파수 분석을 이용한 자동차 옆 창문 표면 압력 섭동의 비압축성/압축성 성분 분해,이송준;정철웅;

한국소음진동공학회논문집, 2016. vol.26. 7, pp.765-773 crossref(new window)
Decomposition of Surface Pressure Fluctuations on Vehicle Side Window into Incompressible/compressible Ones Using Wavenumber-frequency Analysis, Transactions of the Korean Society for Noise and Vibration Engineering, 2016, 26, 7, 765  crossref(new windwow)
Cheong, C. et al., 2005, Computation of Broadband Noise of a 2-D Flat-airfoil Cascade Subject to Ingested Turbulence, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 6, pp. 187~696.

Hong, J. S. and Ih, K. D., 2007, A Study on the Real Side Window Buffeting Characteristic, KSAE Annual Spring Conference, Vol. 2, pp. 977~982.

Lee, S. and Kim, J., 1997, Aerodynamic Noise in Automobiles, Journal of the Korean Society of Automotive Engineers, Vol. 19, No. 2, pp. 17~24.

Ota, D. et al., 1994, Computational Study of Resonance Suppression of Open Sunroofs, Journal of Fluids Engineering, Vol. 116, No. 4, pp. 877~882. crossref(new window)

Zhendong, Y. et al., 2014, Numerical Analysis and Passive Control of a Car Side Window Buffeting Noise based on Scale-adaptive Simulation, Applied Acoustics, Vol. 79, pp. 23~34. crossref(new window)

Bodger, W. and Jones, C., 1964, Aerodynamic Wind Throb in Passenger Cars, SAE Technical Paper, 640797.

Henderson, B. S., 2000, Automobile Noise Involving Feedback- Sound Generation by Low Speed Cavity Flows, NASA/CP 2000-209790, pp. 95-100.

Henderson, B. S., 2004, Category 5: Sound Generation in Viscous Problems. Problem 2: Sound Generation by Flow Over a Cavity, Fourth Computational Aeroacoustics (CAA) Workshop on Benchmark Problems, NASA/CP 2004-212954

Bernd, C. et al., 2005, Sunroof Buffeting of a Simplified Car Model: Simulations of the Acoustic and Flow-induced Response, SAE Technical Paper, 2005-01-2498.

Shin, S. R. et al., 2006, New Sunroof Wind Noise Reduction Strategy using Analytical Prediction and Automatic Deflector Optimizing System, JSAE Paper, Vol. 71, No. 6, pp. 7~10

An, C.-F. et al., 2004, Side Window Buffeting Characteristics of an SUV, SAW Paper, 2004-01-0230

Sovani, S. D. and Hendriana, D., 2002, Predicting Passinger Car Window Buffeting with Transient External- Aerodynamics Simulations, 10th Annual Conference of the CFD Society of Canada, pp. 9~11.

Qian, Y. H. et al., 1992, Lattice BGK Models for Navier Stokes Equation, Europhysics Letters, Vol. 17, No. 6, pp. 479~484. crossref(new window)

Bhatnagar, P. L. et al., 1954, A Model for Collision Processes in Gases. I. Small Amplitude Processes in Charged and Neutral One-component Systems, Physical Review, Vol. 94, No. 3, pp. 551~525.

Ma, R. et al., 2009, Fluid Mechanics of the Flow-excited Helmholtz Resonator, J. Fluids Mech., Vol. 623, pp. 1~26. crossref(new window)