艇桨耦合状态螺旋桨水动力与噪声数值预报方法研究  

Numerical prediction approach for hydrodynamic force and noise of propeller in submarine propeller interaction condition

作　　者：张楠[1] 李亚[2] 黄苗苗[1] 陈默 ZHANG Nan;LI Ya;HUANG Miao-miao;CHEN Mo(National Key Laboratory of Hydrodynamics,China Ship Scientific Research Center,Wuxi 214082,China;National Key Laboratory on Ship Vibration and Noise,China Ship Scientific Research Center,Wuxi 214082,China)

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

出　　处：《船舶力学》2021年第11期1439-1451,共13页Journal of Ship Mechanics

基　　金：水动力学共性技术项目(41407020502)。

摘　　要：本文给出了基于大涡模拟(LES)与Powell涡声理论的艇桨耦合状态螺旋桨水动力与噪声数值预报方法。首先描述了LES方法与Powell涡声理论及其声学远场解;然后利用LES结合滑移网格计算了AU5-65螺旋桨敞水工况的水动力,得到了推力系数、扭矩系数与敞水效率,给出了螺旋桨梢涡、叶根涡、毂涡的流动结构空间分布,又计算了SUBOFF潜艇带AU5-65螺旋桨自航工况水动力,获得了实效伴流分数、推力减额与相对旋转效率等自航因子,分析了螺旋桨在艇后旋转时的涡旋结构,并将敞水与自航水动力计算结果与试验结果进行了对比分析,验证了流动计算方法的可靠性;最后,在对流动声源数值计算的基础上,对敞水与自航工况下的螺旋桨噪声进行了数值预报,并与试验结果进行了对比分析,分析了声压谱谱型与幅值,辨识了艇桨耦合流动对于螺旋桨噪声的影响,验证了数值预报方法的适用性与可靠性。This paper presents the numerical prediction approach for hydrodynamic force and noise of propeller in submarine propeller interaction condition by large eddy simulation(LES)and Powell vortex theory.LES and Powell vortex sound theory with far-field solution are introduced at first.Thrust coefficient,torque coefficient and open-water efficiency are obtained by computing the hydrodynamic forces of Propeller AU5-65 in open water condition by LES with sliding mesh while the distributions of tip vortex,vortex around the root of blade and hub vortex are presented.The self-propulsion factors including effective wake coefficient,thrust deduction coefficient and relative rotative efficiency are obtained through computation of the hydrodynamic forces of submarine SUBOFF with Propeller AU5-65 at the self-propulsion condition.The vortices in the tail flow as the propeller rotating astern are analyzed while the numerical results in open water and selfpropulsion conditions are compared with measurements,validating the numerical simulation method of flow.Based on the computation of acoustic sources in flow,the flow-induced noise of propeller in open water and self-propulsion conditions are predicted and compared with measurements.The shape and magnitude of acoustic SPL spectrum are analyzed,and the influence of submarine propeller interaction on the radiation noise is studied.Thus,the applicability and robustness of the numerical prediction approach are validated.

关 键 词：潜艇 螺旋桨 涡旋结构 流激噪声 大涡模拟 Powell涡声理论 

分 类 号：U661.3[交通运输工程—船舶及航道工程]