带前置预旋导轮的螺旋桨空泡脉动压力数值模拟研究  

Numerical Study of Pressure Fluctuation Induced by Propeller Cavitation with Pre-shrouded Vanes

作　　者：翟树成[1,2] 刘登成 韩用波[1,3] ZHAI Shu-cheng;LIU Deng-cheng;HAN Yong-bo(China Ship Scientific Research Center,Wuxi 214082,China;Jiangsu Key Laboratory of Green Ship Technology,Wuxi 214082,China;CSIC Shanghai Marine Energy Saving Technology Development Co.,Ltd.,Shanghai 200011,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]江苏省绿色船舶技术重点实验室,江苏无锡214082 [3]上海船用节能装置发展有限公司,上海200011

出　　处：《船舶力学》2021年第10期1292-1301,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金项目(9185220001)。

摘　　要：本文基于非定常粘性RANS方法结合Schnerr-Sauer空泡模型,建立了船后螺旋桨空泡脉动压力数值预报方法,并开展了数值方法的不确定度分析;然后采用ITTC'78自航预报规程结合CFD方法预报了带前置预旋导轮的节能效果,开展了安装节能导轮后的螺旋桨空泡脉动压力预报研究;对比分析了有无节能装置时的螺旋桨叶表面空泡形态及1阶和2阶船体脉动压力。研究表明,在本实例中安装节能装置后的1阶和2阶脉动压力分别下降了33%和20%,而桨叶表面空泡面积也有所下降。A numerical method to predict the propeller cavitation and hull pressure fluctuation in the ship stern is set up in this paper by using unsteady viscous RANS approach and Schnerr-Sauer cavitation model.The numerical error or uncertainty is estimated with verification and validation method before evaluation of the energy-saving performance at self-propulsion condition by using the revised ITTC’78 method.Then the hull pressure fluctuation induced by propeller cavitation is predicted without Pre-Shrouded Vanes(PSV,CMES-PSV).The numerical method is used to study the hull pressure fluctuation with PSV,which has five fins and a half duct.The cavity patterns and the amplitudes of the first and second blade frequencies(BF)of hull pressure fluctuation are compared.When PSV energysaving device is used,the 1 BF and 2 BF pressure fluctuations decrease about 33%and 20%respectively,and the cavitation shape areas also decrease.

关 键 词：螺旋桨空泡 CFD 脉动压力 节能装置 

分 类 号：U661.32[交通运输工程—船舶及航道工程]