运动参数对近波面拍动翼推进性能的影响  

Effect of kinematic parameters on propulsion performance of flapping foil

作　　者：刘鹏[1] 苏玉民[1] 李宏伟[1] LIU Peng SU Yumin LI Hongwei(Science and Technology on Underwater Vehicle Laboratory, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]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：《中南大学学报（自然科学版）》2016年第12期4062-4069,共8页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51479039;51609220);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);黑龙江省博士后经费资助项目(LBH-Z13055)~~

摘　　要：研究水翼不同运动参数对近波面二维刚性拍动翼推进性能的影响。首先,根据计算流体动力学(CFD)建立了近液面水翼的计算模型,然后采用速度边界造波及动网格等方法对不同参数下水翼的运动及水动力性能进行模拟和分析,最后,计算比较水翼处于无界流中及近静水面时性能。研究结果表明:恰当的水翼摇摆与升沉间相位差能够有效增加翼推力,提高翼推进效率及波浪能利用效率。波面的存在及恰当的翼摇摆与升沉相位差可增加水翼尾涡梯度、减小涡分布范围,从而增加翼推力及效率。此外,水翼大摆幅角运动可获得较高的推力及效率,而大升沉幅度下水翼推力较高,但效率较低。The effect of kinematic parameters on the propulsion performance of 2D rigid flapping foil nearby the wave surface was studied. At first, the numerical model of foil under the waves was built based on the computational fluid dynamic（CFD） technique. Then, using wave-generated by velocity inlet boundary method and dynamic mesh technology, both the motions and hydrodynamic performances of foil were simulated and analyzed. The performances of foils which were in infinite fluid and nearby the calm water surface were calculated and compared. The results show that the thrust, propulsive efficiency and the wave devouring efficiency of foil can be maximum when the phase difference between pitch and heave is appropriate. The wake can increase the gradient of foil＇s wake vortex and decrease its range when the foil was near the wave surface or with the favorable phase difference between pitch and heave. As a result, the thrust and propulsive efficiency can be improved. In addition, it is beneficial to increase the thrust at larger pitch angle or heave amplitude and higher efficiency can get at larger pitch angle or smaller heave amplitude.

关 键 词：规则波 拍动翼 运动参数 尾涡 推进性能 

分 类 号：U661.43[交通运输工程—船舶及航道工程]