The 3D time-domain computational fluid dynamics (CFD) approach is used to calculate the acoustic attenuation performance of perforated tube silencers without and with flow. For the crossflow perforated tube silencer and straight-through perforated tube silencers, the transmission loss predictions agree well with the experimental measurements available in the literature. Then, the 3D time-domain CFD approach is employed to investigate the effects of flow velocity and temperature on the acoustic attenuation performance of perforated tube silencers. The numerical results demonstrated that the transmission loss is increased at most frequencies for the crossflow perforated tube silencer as the air flow increases, while the air flow has little influence on the acoustic attenuation in the plane wave range and increases the acoustic attenuation at higher frequencies for the straight-through perforated tube silencers. Increasing the air temperature shifts the transmission loss curve to higher frequency and lowers the resonance peaks somewhat. The pressure drops of perforated tube silencers are predicted by performing the 3D steady flow computation using CFD. The pressure drop of the crossflow perforated tube silencer is much higher than those of the straight-through perforated tube silencer at the same flow conditions, and the pressure drop of the straight-through perforated tube silencer increases gradually as the porosity increases.
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Harbin Engineering University,
Harbin, Heilongjiang 150001,
Harbin Engineering University,
Harbin, Heilongjiang 150001,
e-mail: zhenlinji@yahoo.com
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April 2014
Research-Article
Computational Fluid Dynamics-Based Numerical Analysis of Acoustic Attenuation and Flow Resistance Characteristics of Perforated Tube Silencers
Chen Liu,
Harbin Engineering University,
Harbin, Heilongjiang 150001,
Chen Liu
School of Power and Energy Engineering
,Harbin Engineering University,
No. 145 Nantong Street, Nangang District
,Harbin, Heilongjiang 150001,
China
Search for other works by this author on:
Zhenlin Ji
Harbin Engineering University,
Harbin, Heilongjiang 150001,
e-mail: zhenlinji@yahoo.com
Zhenlin Ji
1
School of Power and Energy Engineering
,Harbin Engineering University,
No. 145 Nantong Street, Nangang District
,Harbin, Heilongjiang 150001,
China
e-mail: zhenlinji@yahoo.com
1Corresponding author.
Search for other works by this author on:
Chen Liu
School of Power and Energy Engineering
,Harbin Engineering University,
No. 145 Nantong Street, Nangang District
,Harbin, Heilongjiang 150001,
China
Zhenlin Ji
School of Power and Energy Engineering
,Harbin Engineering University,
No. 145 Nantong Street, Nangang District
,Harbin, Heilongjiang 150001,
China
e-mail: zhenlinji@yahoo.com
1Corresponding author.
Contributed by the Noise Control and Acoustics Division of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received August 6, 2012; final manuscript received November 14, 2013; published online December 24, 2013. Assoc. Editor: Lonny Thompson.
J. Vib. Acoust. Apr 2014, 136(2): 021006 (11 pages)
Published Online: December 24, 2013
Article history
Received:
August 6, 2012
Revision Received:
November 14, 2013
Citation
Liu, C., and Ji, Z. (December 24, 2013). "Computational Fluid Dynamics-Based Numerical Analysis of Acoustic Attenuation and Flow Resistance Characteristics of Perforated Tube Silencers." ASME. J. Vib. Acoust. April 2014; 136(2): 021006. https://doi.org/10.1115/1.4026137
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