前后双翼差相位扑动对升力的影响  

Effect of the interaction between fore-and hindwings on lift generation

作　　者：周超英[1] 林玉峰[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《哈尔滨工业大学学报》2007年第4期642-646,共5页Journal of Harbin Institute of Technology

摘　　要：以蜻蜓(Sympetrum sanguineum)为参考对象,通过求解Navier-Stokes方程,分析了蜻蜓前飞时前、后两对翼的相互作用对升力的影响.结果表明,蜻蜓以后翼扑动超前前翼90°相位的方式飞行时,前翼的升力相对于单翼增大约1/3,其主要产生于翼的下拍运动,而后翼的升力变化不大,蜻蜓以这种差相位扑动方式飞行有利于在整个扑动周期内提供一个相对持续稳定的升力.A numerical investigation on the effect of the interaction between the fore - and hingwings on lilt force of a dragonfly （Sympetrum sanguineum） in forward flight is carried out where the forewing motion is approximately 90 degree phase behind that of the hindwing in a flapping cycle. It is found that with this phase angel difference the effect of the interaction between the two wings gives a positive influence on the forewing motion and results in a 1/3 lift force increase on the forewing compared with that on a single wing in the same motion. This increase is mainly generated influence on the lift force of the hingwing during the downstroke motion of the forewing. However, much less is found.

关 键 词：扑翼 微型飞行器 低雷诺数 前缘涡 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计]