噪声与振动控制2018，Vol.38Issue(z1)：199-202,4.DOI:10.3969/j.issn.1006-1355.2018.Z1.042
管道阀门共振腔气动噪声特性及规律研究
Study on Aerodynamic Noise Characteristics and Regulations of Resonance Cavities in Pipeline Valves
白长安 1陈天宁 1张锴 2谢永诚2
作者信息
- 1. 西安交通大学 机械学院,西安 710049
- 2. 上海核工程研究设计院,上海 200233
- 折叠
摘要
Abstract
Aerodynamic noise characteristics and regulations of resonance cavities were studied by test method and numerical simulation. Fluid mechanics analysis software and acoustic analysis software were used to solve the resonance cavity noise and the sound propagation characteristics of pipeline valves. By comparing simulation results with test results, the influences of the size and flow velocity in the pipeline and valves on sound frequency and sound pressure are discussed. The results show that the phenomenon of acoustic resonance occurs when Strouhal number is in the range of 0.3~0.6, acoustic resonance frequency shows a frequency-locked characteristic with the increase of the flow velocity, and the acoustic resonance frequency decreases with the increase of the side branch length.关键词
振动与波/共振腔/气动噪声/斯特劳哈数/声传播Key words
acoustics/resonance cavity/aerodynamic noise/Strouhal number/sound propagation引用本文复制引用
白长安,陈天宁,张锴,谢永诚..管道阀门共振腔气动噪声特性及规律研究[J].噪声与振动控制,2018,38(z1):199-202,4.
