波翼相位差对柔性翼水动力性能的影响  

Effects of wave phase difference on the hydrodynamic performance of a flexible flapping foil

作　　者：刘鹏[1,2] 苏玉民[2] 李宁宇[2] 

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]哈尔滨工程大学水下机器人技术重点实验室,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2016年第3期313-319,共7页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(51479039;51409061);中国博士后科学基金资助项目(2013M540271);中央高校基本科研业务费专项资金资助项目(HEUCFD1403);黑龙江省博士后资助经费资助项目(LBH-Z13055)

摘　　要：以仿生推进系统利用波浪能为背景,研究了波翼相位差对规则波下近波面二维柔性拍动翼的推进性能的影响。采用求解RANS方程的方法,计算了不同波翼相位差下柔性翼的水动力性能,并与无波情况下及相同工况下刚性翼结果进行比较。计算结果显示:波翼相位差对翼水动力系数的相位、幅值有影响,恰当波翼相位差下,柔性翼能有效利用波浪能增加自身推力及效率,且其对波浪能的利用能力高于刚性翼。尾涡分析表明,恰当的波翼相位差能够提高柔性翼尾涡梯度及其连续性,从而提高波面下柔性翼推力及效率。Under the background of a bionic propulsion system using wave energy,in this paper we investigate the influence of the phase difference between wave and foil motion on the propulsion system of a two-dimensional flexible flapping foil near the wave surface under a regular wave. We applied the Reynolds-averaged Navier-Stokes（ RANS） equation solution to analyze the hydrodynamics of a flexible flapping foil with different wave phase differences. We then compared the results with those without waves and those of rigid foil in the same working conditions.The computed results indicate that wave phase differences influence the phase angles of the hydrodynamic coefficients,as well as their magnitude. With a favorable wave phase difference,a flexible foil can improve its thrust force and efficiency by utilizing wave energy and its ability to utilize wave energy is higher than that of a rigid foil.Wake characteristics were also analyzed,and the results show that a favorable wave phase difference can improve the gradient and continuity of the wake vortex,and thereby increase the thrust and efficiency of the flexible foil under the wave surface.

关 键 词：柔性翼 规则波 波翼相位差 水动力性能 尾涡 

分 类 号：U661.43[交通运输工程—船舶及航道工程]