柔性扑翼弦向形变气动特性的数值研究  

Numerical Simulation of the Flapping Wing with Chordwise Flexibility on the Aerodynamic Characteristics

作　　者：高强 徐江荣[1] 王关晴[1] 

机构地区：[1]杭州电子科技大学能源研究所,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2017年第6期86-90,共5页Journal of Hangzhou Dianzi University：Natural Sciences

摘　　要：研究了柔性变形对扑翼空气动力学特性的影响.利用计算流体力学分析软件fluent中的动网格方法对不同形变的柔性扑翼进行数值模拟,得到了3种不同情况下扑翼的升阻力系数及涡量云图,对流场的气动特性及流场结构的变化规律进行了分析,扑翼飞行时,适度的弦向变形能增加瞬时升力,获得较大的升力,但过大的弦向变形将导致瞬时升力的减小,对扑翼飞行的气动特性产生不利的影响.This paper studied the influence of the flexible flapping wing with chordwise deformation on the aerodynamic characteristics. The flexible flapping wing with different deformations is numerically simulated by using the dynamic mesh method in the computational fluid dynamics software fluent.Obtain the lift-coefficient and drag-coefficient and vorticity distribution of the flapping wing under three different conditions,and analyzes the aerodynamic characteristics and the variation of flow field.The results show that moderate chordwise deformation can increase instantaneous lift force and obtain a large lift force,but excessive chordwise deformation will lead to a decrease of instantaneous lift force,which will adversely affect the aerodynamic characteristics of flapping-wing flight.

关 键 词：柔性扑翼 气动特性 动网格 

分 类 号：O357[理学—流体力学]