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Relation Between the Predominance of Acoustic Resonance Noise and Air Flow in Muffler
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English
Abstract
The interaction phenomena of the internal flow and the acoustic resonance noise in expansion cavity type mufflers was investigated. The generation conditions of this phenomena and the predominance of acoustic resonance noise were examined. According to the distribution of fluctuating velocity generated in the cavity, the location where the vortexes were generated in the cavity and the amplifying process of the vortex rings were clarified.
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Kojima, N., Liu, B., and Zhou, H., "Relation Between the Predominance of Acoustic Resonance Noise and Air Flow in Muffler," SAE Technical Paper 951262, 1995, https://doi.org/10.4271/951262.Also In
References
- Ramakrishnan, R. Davies, P.O.L.A “Mechanics of Sound Generation in Flows” Muller, E.A. Springer-Verlag 1979 62
- Obata, T. Hirata, M. “Aerodynamic Performance of Reactive Mufflers(1st Report, Flow-Generated Noise within Expanded Cross-Section Muffler)” J. Inst. Noise Cont. Engg., Japan 8 4 1984 49 53
- Obata, T. Hirata, M. “Aerodynamic Performance of Reactive Mufflers (2nd Report, Flow-Generated Noise within Pipe and Volume Resonators)” J. Inst. Noise Cont. Engg. Japan 8 5 1984 44 49
- Kurasawa, H. Obata, T. Hirata, M. “Self-Excited Phenomenon in a Axi-Symmetric Jet with a In-Line Located Straight Pipe” J. Acoustical Soc.Japan 41 11 1985 777 783
- Kurasawa, H. et.al. “Self-Excited Oscillation in an Axi-Symmetric Jet with a Coaxial Finite-Length Circular Pipe” J.JSME(B) 53 494 1987 3018 3026
- Kojima, N. Nakamura, Y. Fukuda, M. “A study on Mufflers with Air Flow(3rd Report, Correlation Between Fluctuating Velocity in Muffler and Air Flow Noise)” J.JSME(B) 53 486 1987 623 629