文献类型：期刊文献

英文题名：Prediction of Noise Induced by Turbulent Flow in a Control Valve

作者：Sun, Chang-Zhou[1]; Yu, Xin-Hai[1]; Zong, Xin[2]; Lai, Huan-Xin[1]

机构：[1] Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai, 200237, China; [2] Suzhou Delan Energy Science & Technology Co., Ltd, Suzhou, 215143, China

年份：2017

卷号：38

期号：9

起止页码：1866

外文期刊名：Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics

收录：EI(收录号：20175104564441)

语种：英文

外文关键词：Acoustic fields - Safety valves - Wall flow - Acoustic noise

摘要：In this paper, the noise of a control valve which is induced by the internal turbulent flow and propagates outward through the valve shell is numerical studied. Firstly, the internal turbulence is calculated and the turbulent wall pressure fluctuation (TWPF) is extracted. Then the internal acoustic field is calculated by Lighthill's acoustic analogy, and the acoustic wall pressure fluctuation (AWPF) is extracted. Both of these two wall pressure fluctuations are used as the driving loads for the prediction of the external acoustic field. The sound pressure signals and their spectra at external monitoring points are analyzed. A modification of the valve internal structure is proposed for possible noise reduction, and then it is validated by numerical calculation. ? 2017, Science Press. All right reserved.