Numerical Simulation of In-Pipe Turbulent Noise

Numerical simulation is used to explore the turbulence noise in pipes generated by high-speed fluid. The characteristics of turbulent noise and its influencing factors are analyzed for different pipe structures and flow rates. The results showed that there is a parabolic relationship between the Ove...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 607; no. Machine Design and Manufacturing Engineering III; pp. 565 - 568
Main Authors Hao, Zong Rui, Zhou, Zhong Hai, Xu, Juan
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.07.2014
Subjects
Computational fluid dynamics
Cylinders
Flow rate
Fluid flow
Mathematical models
Pipe
Turbulence
Turbulent flow
Turbulent Noise
Numerical Simulation
Overall Sound Pressure Level
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Summary:Numerical simulation is used to explore the turbulence noise in pipes generated by high-speed fluid. The characteristics of turbulent noise and its influencing factors are analyzed for different pipe structures and flow rates. The results showed that there is a parabolic relationship between the Overall Sound Pressure Level (OASPL) and the flow rate as the flow rate increases in the pipe. The OASPL of a variable diameter pipe is 20dB higher than that of the straight pipe with a built-in cylinder under the same flow rate. The structure of flow around a cylinder can effectively weaken turbulence noise and reduce high-frequency noise.
Bibliography:Selected, peer reviewed papers from the 2014 3rd International Conference on Machine Design and Manufacturing Engineering (3rd ICMDME 2014), May 24-25, 2014, Jeju Island, South Korea
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISBN:9783038351801
3038351806
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.607.565