Effect Factors of Flow Regenerated Noise from Muffler Unit with Simple Expansion

Hai Jun Zhao; Xing Guo Zhao; Guo Hua Wang

doi:10.4028/www.scientific.net/AMM.387.323

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 387Effect Factors of Flow Regenerated Noise from...

Effect Factors of Flow Regenerated Noise from Muffler Unit with Simple Expansion

Abstract:

Structure parameters of work piece on muffler unit with simple expansion are determined using orthogonal experiment design method, and relationship model of total sound power of flow regenerated noise and flow velocity structure parameters is built, and the model parameters are solved, and quantity study of effect factors for the noise is performed. Results show that inlet diameter and expansion cavity length have high effect on flow regeneration noise, the reducing of the inlet diameter and improving expansion cavity length is in favor of the reduction of flow regeneration noise from muffler unit with simple expansion, and expansion ratio has less influence on the noise, the reducing of the expansion ratio makes the regenerated noise become less down.

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Periodical:

Applied Mechanics and Materials (Volume 387)

Pages:

323-327

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.387.323

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Online since:

August 2013

Authors:

Hai Jun Zhao, Xing Guo Zhao, Guo Hua Wang

Keywords:

Effect Factors, Flow Regenerated Noise, Muffler Unit with Simple Expansion, Sound Power Model

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References

[1] Rolf Jebasinski, Sascha Leng, Marco Jess et al. Investigation on whistle noise in automotive exhaust system mufflers[R]. SAE Paper, No2005012361, (2005).

DOI: 10.4271/2005-01-2361

Google Scholar

[2] A.J. Torregrosa, A. Broatch, H. Climent, I. Andre, A note on the Strouhal number dependence of the relative importance of internal and external flow noise sources in IC engine exhaust systems [J]. Journal of Sound and Vibration 282（1） (2005).

DOI: 10.1016/j.jsv.2004.05.017

Google Scholar

[3] G.B. Ashcroft, K. Takeda, X. Zhang. A numerical investigation of the noise radiated by a turbulent flow over a cavity[J]. Journal of Sound and Vibration 265 (2003) 43–60.

DOI: 10.1016/s0022-460x(02)01439-6

Google Scholar

[4] D.A. BIES ,J.M. PICKLES. Aerodynamic noise generation by a stationary body in a turbulent air stream [J]. Journal of sound and vibration 1997，204(4), 631-643.

DOI: 10.1006/jsvi.1997.0981

Google Scholar

[5] J.M. Desantes, A.J. Torregrosa, A. Broatch, Experiments on flow noise generation in simple exhaust geometries [J]. ACUSTICA united with Acta Acoustica , 2001, 87 (1): 46-55.

Google Scholar

[6] Rolf Jebasinski, Sascha Leng, Marco Jess et al. Investigation on whistle noise in automotive exhaust system mufflers [R]. SAE Paper, No2005012361, (2005).

DOI: 10.4271/2005-01-2361

Google Scholar

[7] Zhao-Haiju, Deng Zhao-xiang. Total Power Model of Flow Noise Generation from Perforated Duct Muffler Element. JOURNAL OF VIBRATION AND SHOCK, 30, 8 (2011).

Google Scholar

[8] Deng Zhao-xiang, Zhao Hai-jun, Zhao Shi-ju, Li Pei-ran. Producting mechanism of flow noise generation from perforated duct muffler element, Transactions CSICE, 5, 27 (2009).

DOI: 10.4028/www.scientific.net/amr.346.204

Google Scholar