空气动力学学报2011，Vol.29Issue(6)：709-718,10.
仿鸟柔性扑翼气动特性与能耗的数值研究
Numerical investigation on aerodynamics and power requirement of a bird-like flexible flapping wing
摘要
Abstract
The unsteady low Reynolds number flows due to a bird-like flexible flapping-wing model are simulated according to the condition of that the computed mean lift equals its weight and the mean thrust equals the body drag. The influences of some key parameters, such as mean angle and amplitude of wing s torsion, on the aerodynamic per formances of the flapping wing are evaluated. The results indicate that the initial torsion shape, the flexibility of the flapping wing and the match of them are very important for successful flapping wing MAVs. The unsteady flow struc ture , lift and thrust generation mechanisms are analyzed in this paper. The leading edge vortex which is generated and adheres to upper surface during downstroke is a primary mechanism for lift generation. Also a comparison of aerody namic power requirement is drawn between the orthopter and birds and concludes that current orthopters are still not a patch on flying animals in efficiency as they consume dramatically more aerodynamic power for flying.关键词
微型飞行器/柔性扑翼/非定常流/气动特性/数值模拟Key words
micro air vehicle/ flexible flapping wing/ unsteady flow/ aerodynamics/ numerical simulation分类
航空航天引用本文复制引用
肖天航,段文博,昂海松..仿鸟柔性扑翼气动特性与能耗的数值研究[J].空气动力学学报,2011,29(6):709-718,10.基金项目
中国博士后科学基金(20090461113) （20090461113）
江苏省博士后科研资助计划基金(0902086C) （0902086C）
南航大基本科研业务费专项(NS2010025) （NS2010025）
