非均匀来流下螺旋桨空泡脉动压力特性研究  

Propeller cavitation and induced pressure fluctuation in non-uniform wake

作　　者：叶哲豪 胡宜静 伍锐[2] 刘恒[2] 吴钦[1,3] YE Zhe-hao;HU Yi-jing;WU Rui;LIU Heng;WU Qin(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;State Key Laboratory of Shipping Technology and Safety,Key Laboratory of Marine Technology Ministry of Communications,Shanghai Ship and Shipping Research Institute,Shanghai 200135,China;Chongqing Innovation Center,Beijing Institute of Technology,Chongqing 401120,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]上海船舶运输科学研究所,航运技术与安全国家重点实验室,航运技术交通行业重点实验室,上海200135 [3]北京理工大学重庆创新中心,重庆401120

出　　处：《船舶力学》2024年第10期1486-1495,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(52279081);北京市自然科学基金资助项目(3232033);重点实验室基金资助项目(6142223210101)。

摘　　要：针对某船用大侧斜螺旋桨(HSP),采用多场同步测量系统,在空泡水筒内开展螺旋桨空泡演化及其脉动压力特性试验研究,探究进速系数和空化数对螺旋桨空泡脉动压力特性的影响。试验结果表明:螺旋桨出现的空泡类型包括叶背空泡、叶面空泡和梢涡空泡,低频脉动压力与空泡体积振荡相关。在无空泡情况下,对比各阶叶频分量对脉动压力的影响,一阶叶频为主要分量,可忽略高阶叶频分量的幅值;空泡产生后,非定常空泡演化对螺旋桨脉动压力性能影响较大,脉动压力出现明显高阶叶频分量,同时主频脉动压力幅值显著增加,空泡发展过程越剧烈,变化越显著;当出现不稳定的梢涡空泡时,脉动压力高阶叶频分量明显增大。In order to study the propeller cavitation and induced pressure fluctuation in non-uniform wake,a multi-field synchronous measurement system was used to carry out tests in a cavitation tunnel for a highly skewed propeller(HSP)and explore the influence of advance coefficient and cavitation number on the propeller cavitation performance and fluctuating pressure characteristics.The results show that the propeller cavitation appears in the test mainly in three types:back cavitation,face cavitation and tip vortex cavitation.Lowfrequency pressure fluctuation is highly correlated to the cavity volume oscillation.Under non-cavitation condition,the first blade passing frequency is the main component of pressure fluctuation while the amplitude of higher blade passing frequency component can be ignored by comparing the contributions of each blade passing frequency component of the whole pressure fluctuation.Under cavitation condition,the unsteady cavitation has a great impact on the pressure fluctuation.The higher blade passing frequency components can be obviously observed,and the amplitude of main frequency pressure fluctuation increases significantly.The variation of pressure will become more observable with the increase of intensity of cavitation evolution process.The higher order blade frequency component of pulsating pressure increases obviously when tip vortex cavitation is present.

关 键 词：空化 螺旋桨 脉动压力 非均匀流场 

分 类 号：U664.33[交通运输工程—船舶及航道工程]