AU5-65螺旋桨紧急倒车工况流场与涡流噪声数值模拟研究  

Numerical Simulation of Flow Field and Vortex Noise of AU5-65 Propeller in Crashback

作　　者：汪训铭 张楠[1] 朱锡清[3] Wang Xunming;Zhang Nan;Zhu Xiqing(National Key Laboratory of Hydrodynamics,China Ship Scientific Research Center,Wuxi 214082,China;School of Naval Architecture&Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,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,无锡214082 [2]华中科技大学船舶与海洋工程学院,武汉430074 [3]中国船舶科学研究中心船舶振动噪声重点实验室,无锡214082

出　　处：《水动力学研究与进展（A辑）》2023年第4期535-542,共8页Chinese Journal of Hydrodynamics

基　　金：水动力学共性技术项目(41407020502)。

摘　　要：该文利用大涡模拟(LES)与FW-H声学类比方法对AU5-65螺旋桨第一象限(前进正车)和第三象限(紧急倒车)下的流场与涡流噪声进行了数值模拟研究。在规范的网格收敛性分析和亚格子涡模型影响性分析的基础上,采用1 063万网格与SL亚格子涡模型,首先对螺旋桨敞水第一和第三象限不同进速下的流场与水动力性能展开了计算分析,并通过相关试验数据校验了计算方法的可靠性,将不同工况与不同进速系数下的瞬态流场、桨叶切面压力和涡旋结构演化等结果进行了对比分析;在此基础上,结合FW-H方程对AU5-65桨敞水正车前进与紧急倒车时涡流噪声频谱进行了计算分析,探讨了紧急倒车工况下的螺旋桨涡流噪声幅值与频率特征。研究结果表明,该文建立的数值计算方法适用于螺旋桨紧急倒车工况下的流动与噪声模拟。In this paper,by using large eddy simulation(LES)and FW-H acoustic analogy methods,the flow field and vortex noise of AU5-65 propeller in forward and crashback conditions are studied.Based on the analysis of grid convergence and different sub-grid stress models,10.63 million grid and SL model are selected.The flow field and hydrodynamic performance of the propeller under several advance coefficients are first calculated,and the reliability of the calculation method is verified by experimental data.The transient flow field,blade section pressure and vortex structure evolution under different conditions are compared and analyzed.Then,combined with FW-H equation,the vortex noise spectrum of AU5-65 propeller in forward and crashback conditions are computed and analyzed,the amplitude and frequency characteristics of propeller vortex noise in crashback are discussed.The research shows that the numerical simulation method in this paper is suitable for flow and noise simulation of propeller in crashback.

关 键 词：紧急倒车 大涡模拟 FW-H方程 涡流噪声 

分 类 号：U661.3[交通运输工程—船舶及航道工程]