消声水池中水射流噪声特性试验研究  

Experimental Investigation into Noise Characteristics of Water Jet in Anechoic Tank

作　　者：程广利[1] 罗夏云 孟路稳 杨琼方[2] CHENG Guang-li;LUO Xia-yun;MENG Lu-wen;YANG Qiong-fang(College of Electronic Engineering,Navy University of Engineering,Wuhan 430033,Hubei,China;College of Power Engineering,Navy University of Engineering,Wuhan 430033,Hubei,China)

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033 [2]海军工程大学动力工程学院,湖北武汉430033

出　　处：《兵工学报》2018年第6期1165-1170,共6页Acta Armamentarii

基　　金：国家自然科学基金项目(41576105)

摘　　要：为研究水射流的噪声特性,设计并构建了水射流与辐射噪声测试试验系统。评估了消声水池的自由场性能,基于试验系统测量了消声水池中的水射流噪声特性。试验数据分析表明,在消声水池中开展的50 mm口径水射流试验,能较准确地获得射流速度小于20 m/s时的水射流辐射噪声声源级及其谱分布;获取的水射流噪声辐射声功率整体符合与射流速度8次方呈正比的变化规律,射流速度低于20 m/s时的水射流辐射噪声主要由射流中的湍流运动产生。An experimental system for producing water jet and measuring its radiated noise was designed and constructed to study the noise characteristics of water jet. Performances of free field in an anechoic tank are evaluated, and then the noise characteristics of water jet in the anechoic tank are measured using the proposed experimental system. Analysis of experimental data demonstrates that the source level and spectral distribution of water jet can be obtained exactly using the proposed experimental system with 50 mm diameter jet pipe at the jet efflux velocity of less than 20 m/s. Radiated power of water jet noise obtained from experiment varies approximately in proportion to the eighth power of jet efflux velocity, and water jet noise at efflux velocity of less than 20 m/s is mainly caused from its turbulent motion.

关 键 词：消声水池 水射流噪声 声功率 射流速度 

分 类 号：TB522[理学—物理]