仿生类鱼鳍翼力学性能的数值研究  

Numerical study on mechanical properties of bionomic fin-like wing

作　　者：吴丹 胡文蓉[1,2,3] WU Dan;HU Wenrong(Department of Engineering Mechanics,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Jiao Tong University and Chiba University International Cooperative Research Center (SJTC-CU-ICRC),Shanghai Jiao Tong University,Shanghai 200240,China;MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学工程力学系,上海200240 [2]上海交通大学上海交通大学与千叶大学国际合作研究中心,上海200240 [3]上海交通大学水动力学教育部重点实验室,上海200240

出　　处：《天津师范大学学报（自然科学版）》2019年第2期26-31,共6页Journal of Tianjin Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(11472173)

摘　　要：为了研究仿生类鱼鳍翼的流动控制机理,通过数值求解不可压缩流动非定常N-S方程,对类鱼鳍翼和传统机翼在不同运动方式下的力学性能和流动机理进行对比分析.研究结果表明:与传统翼相比,尽管在来流中静止的仿生类鱼鳍翼会增加阻力,但其在做拍动运动时产生的复杂涡系可以改善压强分布,增强前缘吸力,提高推力.In order to study the flow control mechanism of a bionomic fin-like wing,the hydrodynamic performance and flow mechanism of a fin-like wing and a traditional wing in different motion modes were compared and analyzed by solving unsteady N-S equations of incompressible flow.The results show that the drag of the fin-like wing is larger than that of the traditional wing.However,the thrust of the fin-like wing is much larger than that of the traditional wing in flapping motion because com-plex vortices generated in the grooves of the fin-like wing can not only improve the pressure distribution but also enhance the leading-edge suction.

关 键 词：沉浮与俯仰运动 仿生类鱼鳍翼 力学性能 流动机理 数值模拟 

分 类 号：O35[理学—流体力学]