大涡模拟预报螺旋桨辐射噪声的三种声学方法  

Numerical simulation of propeller noise based on LES combining three acoustic prediction methods

作　　者：李亚[1] 张楠[2] 熊紫英[1] 孙红星[1] LI Ya ZHANG Nan XIONG Zi-ying SUN Hong-xing(National Key Laboratory on Ship Vibration and Noise, China Ship Scientific Research Center, Wuxi 214082, Jiangsu, China National Key Laboratory of Hydrodynamics, China Ship Scientific Research Center, Wuxi14082, Jiangsu, China)

机构地区：[1]中国船舶科学研究中心船舶振动噪声重点实验室,江苏无锡214082 [2]中国船舶科学研究中心水动力学重点实验室,江苏无锡214082

出　　处：《声学技术》2017年第5期461-466,共6页Technical Acoustics

摘　　要：螺旋桨噪声是船舶的三大噪声源之一,研究螺旋桨的噪声现象具有很大的现实意义。首先划分了螺旋桨的结构化网格,进行了网格收敛性分析,然后采用大涡模拟方法计算螺旋桨水动力。在噪声计算中采用了FW-H方程、结合Virtual lab的旋转偶极子辐射、涡声方程三种方法进行预报,并与换算到自由场的试验结果进行对比分析。结果表明,采用大涡模拟可以预报螺旋桨的辐射噪声,三种方法均满足工程应用需求。The propeller noise is one of the three ship noise sources and very meaningful to study it. The structured grid of propeller is drawn firstly and meshconvergence analysis is made. Then, LES is adopted to predict the propeller hydrodynamic performance. When predicting the radiation noise, three methods, such as FWH equation, Virtual Lab rotating dipole radiation model and Powell vertex sound, are adopted. The computational results are in agreement well with experimental results. The results show that the LES combined with the three methods can predict propeller noise, and the three methods all satisfy the engineering application need.

关 键 词：螺旋桨噪声 大涡模拟 FW-H声学类比 旋转偶极子辐射模型 涡声方程 

分 类 号：U664.3[交通运输工程—船舶及航道工程]