摘要
针对船用PN10DN32三通调节阀噪声声压频谱、声指向性等声学特性规律不明确,噪声声压级是否满足使用要求的问题,基于流-固耦合理论,同时考虑流-固耦合面及流体域内的脉动声学激励源,开展阀门噪声数值模拟研究。分别对三通调节阀在80%及60%开度阀外1 m处的噪声进行数值模拟,分析研究噪声声压频谱特性及声指向性规律。结果表明:80%及60%开度下的噪声声压级分别为49.14 dB(A)、50.79 dB(A),均小于60 dB(A)的噪声限制,满足使用要求。该文为船用三通调节阀噪声数值模拟提供了理论及方法参考。
Aiming at the problem that the acoustic characteristics of Marine PN10DN32 three-way regulating valve noise spectrum and acoustic directivity are not clear,and whether the sound pressure level of noise meets the requirements of use,based on the theory offluid-structure interaction,considering thefluid-structure interaction surface and the pulsating acoustic excitation source in thefluid domain,the numerical simulation of valve noise is carried out.The noise at 1 m outside the 80%and 60%opening of the three-way regulating valve was numerically simulated,and the characteristics of noise sound pressure spectrum and the law of sound directivity were analyzed.The results show that the sound pressure levels of noise at 80%and 60%opening are 49.14 dB(A)and 50.79 dB(A)respectively,which are both lower than the noise limit of 60 dB(A)and meet the requirements of operation.It provides theoretical and methodological reference for the numerical simulation of Marine three-way regulating valve noise.
作者
施红旗
周旭
周爱民
张博浩
李树勋
SHI Hongqi;ZHOU Xu;ZHOU Ai’min;ZHANG Bohao;LI Shuxun(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China;School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《应用声学》
CSCD
北大核心
2024年第1期142-150,共9页
Journal of Applied Acoustics
关键词
三通调节阀
流-固耦合
声指向性
声压频谱特性
噪声数值模拟
Three-way control valve
Fluid-solid coupling
Acoustic directivity
Sound pressure spectrum characteristics
Numerical simulation of noise
