低雷诺数下拍动翼仿生推进效率研究  

Research on the propulsive performance of flapping foil at low Reynolds number

作　　者：李永成[1] 王健[1] 赵桥生[1] 马峥[1] 肖冬林[1] LI Yong-cheng;WANG Jian;ZHAO Qiao-sheng;MA Zheng;XIAO Donglin(China Ship Scientific Research Center,Wuxi 214082,Jiangsu,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《水动力学研究与进展（A辑）》2018年第4期455-460,共6页Chinese Journal of Hydrodynamics

摘　　要：该文主要采用重叠网格技术对拍动翼的流体动力特性进行了计算分析,并且基于浸没边界法采用自编程序对低雷诺数下的拍动翼运动进行了直接数值模拟。将两次计算结果进行了比较,验证了重叠网格技术在处理动边界问题中的正确性和可行性。最后系统地分析了拍动翼的运动参数如升沉俯仰相位差、俯仰幅值以及斯特劳哈尔数,对推进性能的影响。并结合推进效率及拍动翼后方的涡流场结构确立了最佳运动参数。In this article,the numerical simulation was conducted on the flapping foil using the overlap grid technology.The self-programming based on the immersed boundary method was also adopted to carry out the computation on flapping foil＇s hydrodynamic performances.The results gotten from the two methods are in highly consistence,testifying the accuracy and feasibility of the self-programming.Besides,the systematic analysis on the effect of flapping foil＇s motion parameters,like the phase lag between the heaving and pitching,the pitching amplitude and the Strouhal number,on its propulsive efficiency also conducted.The optimum motion parameters are also specified on the basis of self-defined propulsive efficiency and the vortex structure of the rear part of the flapping foil.

关 键 词：拍动翼 浸没边界法 重叠网格 流固耦合 

分 类 号：U661.1[交通运输工程—船舶及航道工程]