大涡模拟预报螺旋桨辐射噪声的三种声学方法
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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.
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.
引文
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[10]张楠,王星,谢华,等.流激噪声数值计算方法及声学积分面影响性研究J.船舶力学,2016,20 7:892‐908.ZHANG Nan,WANG Xing,XIE Hua,et al.Research on numerical simulation approach for flow induced noise and the influence of the acoustic integral surface J.Journal of Ship Mechanics.2016,20 7:892‐908.
[2]WANG Meng,Alison L Marsden,Parviz Moin.Computation and Control of Trailing‐Edge Noise C//26th Symposium on Naval Hy‐drodynamics,Rome,Italy,17‐22.September,2006.
[3]伍文华,杜平安,陈燕,等.大涡模拟在轴流风扇气动噪声仿真中的应用J.机械设计与制造,2013 1:63‐65.WU Wenhua,DU Pingan,CHEN Yan,et al.The application of les in aerodynamic noise simulation for axial fan J.Machinery Design&Manufacture,2013 1:63‐65.
[4]陈敏,姚喜,葛怡君,等.基于大涡模拟的螺旋桨水动力噪声预报研究C//第二十五届全国水动力学研讨会暨第十二届全国水动力学学术会议文集,433‐438.CHEN Min,YAO Xi,GE Yijun,et al.Investigation on Propeller Hydordynamic Noise with Large Eddy Simulation C//Proceedings of the twenty‐fifth National Symposium on hydrodynamics and the Twelfth National Symposium on hydrodynamics,433‐438.
[5]Ffowcs Williams J E.and Hawkings D.L.Sound generation by tur‐bulence and surfaces in arbrary motion C.Proc.Roy.Soc.London,264A,1969:321‐342.
[6]汤渭霖.水下噪声学原理Z.上海:上海交通大学讲义,2004.
[7]詹福良,徐俊伟.Virtual.Lab Acoustics声学仿真计算从入门到精通M.西安:西北工业大学出版社,2013.
[8]Powell A.Theory of vortex sound J.J.Acoust.Soc.Am.,1964,36 1:177‐195.
[9]张楠,李亚,王志鹏,等.基于LES与Powell涡声理论的孔腔流激噪声数值模拟研究J.船舶力学,2015,19 11:1393‐1408.ZHANG Nan,LI Ya,WANG Zhipeng,et al.Numerical simulation on the flow induced noise of cavity by LES and Powell vortex sound theory J.Journal of Ship Mechanics,2015,19 11:1393‐1408.
[10]张楠,王星,谢华,等.流激噪声数值计算方法及声学积分面影响性研究J.船舶力学,2016,20 7:892‐908.ZHANG Nan,WANG Xing,XIE Hua,et al.Research on numerical simulation approach for flow induced noise and the influence of the acoustic integral surface J.Journal of Ship Mechanics.2016,20 7:892‐908.