Numerical Simulation of Flow-Induced Noise in High Pressure Reducing Valve

Lin Wei; Guorong Zhu; Jinyuan Qian; Yang Fei; Zhijiang Jin

doi:10.1371/journal.pone.0129050

Numerical Simulation of Flow-Induced Noise in High Pressure Reducing Valve

PLoS One. 2015 Jun 10;10(6):e0129050. doi: 10.1371/journal.pone.0129050. eCollection 2015.

Authors

Lin Wei¹, Guorong Zhu², Jinyuan Qian¹, Yang Fei¹, Zhijiang Jin¹

Affiliations

¹ Institute of Process Equipment, Zhejiang University, Hangzhou, China.
² Technical Development Department, Ningbo Special Equipment Inspection Center, Ningbo, China.

Abstract

The main objective of this paper is to study the characteristics of flow-induced noise in high pressure reducing valve (HPRV) and to provide some guidance for noise control. Based on computational fluid dynamics (CFD), numerical method was used to compute flow field. Ffowcs Williams and Hawkings Model was applied to obtain acoustic signals. The unsteady flow field shows that noise sources are located at the bottom of plug for valve without perforated plate, and noise sources are behind the plate for valve with perforated plate. Noise directivity analysis and spectrum characteristics indicate that the perforated plate could help to reduce noise effectively. Inlet pressure has great effects on sound pressure level (SPL). The higher inlet pressure will lead to larger SPL at high frequency. When the maximum Ma is close to 1, SPL at low frequency becomes very high.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acoustics / instrumentation*
Computer Simulation
Hydrodynamics
Models, Theoretical
Noise
Pressure

Grants and funding

This work was supported by the Science and Technology Department of Zhejiang Province through the No. 2012C11018-1 and No. 2011R50005. It is ZJ who received the funding. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.