摘要
阀门内漏对压力管路系统安全运行具有很大危害。基于声比拟理论,使用Fluent软件分别进行稳态及非稳态计算,获得阀门内漏的流场和声场特性。研究了管内介质、工作压力、横向距离以及阀门泄漏度对阀门内漏噪声的影响。通过实验对数值模拟方法的正确性进行了验证。研究表明,阀门内漏流场旋涡与噪声直接相关。阀门内漏的声场信号为宽频随机信号,气阀内漏声场强度大于水阀,声压级随工作压力的增大而增大,并且随阀门泄漏度和阀后横向距离先增后减。研究结果可为阀门内漏的噪声预报以及阀门内漏检测提供借鉴。
Valve leakage threatens the safe operation of pressure pipeline systems.Based on the theory of acoustic analogy,the steady-state and unsteady-state simulated calculations for flow field and sound field of valve leakage in pressure pipeline are carried out by using Fluent fluid simulation software.The results show that the vortex in the valve leakage field is directly related to the noise,the sound field signal in the valve leakage is a wide band random signal,the sound field intensity in the valve leakage field is greater than that in the water valve,and the sound pressure level increases with the increase of working pressure,and increases first and then decreases with the valve leakage rate and the transverse distance after the valve.This paper has important reference value for noise prediction and valve leakage detection.
作者
吴猛猛
高艳
明岳
李海斌
钟小雁
陈明辉
WU Mengmeng;GAO Yan;MING Yue;LI Haibin;ZHONG Xiaoyan;CHEN Minghui(Naval Submarine Academy,Qingdao 266199,Shandong,China;Institute of Acoustics,Chinese Academy of Sciences,Beijing 100089,China;Huaneng Hunan Yueyang Power Generation Co.Ltd,Yueyang 414102,Hunan,China)
出处
《声学技术》
CSCD
北大核心
2023年第2期234-241,共8页
Technical Acoustics
基金
华能集团总部科技项目(HNKJ21-HF197)。
关键词
声比拟
噪声预报
球阀
数值模拟
acoustic analogy
noise prediction
ball valve
numerical simulation
