Numerical Simulation of In-Pipe Turbulent Noise

Juan Xu; Zong Rui Hao; Zhong Hai Zhou

doi:10.4028/www.scientific.net/AMM.607.565

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 607Numerical Simulation of In-Pipe Turbulent Noise

Numerical Simulation of In-Pipe Turbulent Noise

Abstract:

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.

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Periodical:

Applied Mechanics and Materials (Volume 607)

Pages:

565-568

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.607.565

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Online since:

July 2014

Authors:

Juan Xu, Zong Rui Hao*, Zhong Hai Zhou

Keywords:

Numerical Simulation, Overall Sound Pressure Level, Turbulent Noise

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