半浸桨叶剖面出入水机理数值分析  

Numerical analysis of surface piercing propeller cup section′s water exit and entry

作　　者：王超[1] 魏豪 常晟铭 孙聪[1] WANG Chao;WEI Hao;CHANG Shengming;SUN Cong(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;National Key Laboratory on Vibration&Noise,China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]中国船舶科学研究中心,振动噪声国家重点实验室,江苏无锡214082

出　　处：《哈尔滨工程大学学报》2024年第9期1662-1669,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51679052).

摘　　要：为了分析半浸桨剖面出入水问题,本文对841-B型半浸桨的杯型剖面进行建模。通过求解RANS方程模拟剖面入水过程,同时结合标准k-ε湍流模型、流体体积方法以及重叠网格技术,建立可靠的数值方法,并在此基础上研究半浸桨剖面出入水产生的现象,分析了不同进速下半浸桨剖面出入水的自由液面、通气腔形式、流场形式及受力特性等。研究结果表明:半浸桨剖面入水的过程是一个伴随着自由液面强非线性变化的非定常的过程,入水过程中,吸力面侧压强下降并吸入空气,形成通气腔,在下一个剖面入水时,将引起自由液面的进一步变化。增大进速,会对这个通气现象有抑制作用。此外,通气腔的变化会影响半浸桨剖面受力情况。To analyze the mechanism of a surface piercing propeller cup section′s water exit and entry,the cup sec-tion of the 841-B surface piercing propeller was modeled,and a reliable numerical method was established by sol-ving the RANS equation to simulate the water entry process of the cup section by combining the standard k-εturbu-lence model,VOF method,and overlapping grid technique.On this basis,the mechanism of the section′s water exit and entry was studied,and the free liquid surface form,ventilation cavity,flow field form,and mechanical characteristics of the cup section under different advance coefficients were analyzed.The results showed that the water exit and entry process of the cup section was unsteady,with strong nonlinear change of the free liquid sur-face.During water entry,the pressure dropped and inhaled air to form a ventilation cavity.When the next section entered water,the liquid surface was more affected.Increasing the advance coefficient inhibited this ventilation phenomenon.In addition,the change in the ventilation cavity affected the mechanical characteristics of the surface piercing propeller.

关 键 词：半浸桨 杯型剖面 数值模拟 进速系数 自由液面 通气现象 流场特性 水动力特性 

分 类 号：U664.33[交通运输工程—船舶及航道工程]