非定常气动跨声速机翼颤振分析  

Flutter Analysis of Unsteady Transonic Wing

作　　者：袁鹏程[1] 张伟峰[1] 

机构地区：[1]浙江大学工程与科学计算研究中心,浙江杭州310027

出　　处：《飞机设计》2012年第2期1-5,22,共6页Aircraft Design

摘　　要：颤振是气动弹性分析中影响最大的问题,在飞行器设计中得到了极大的重视。目前,在飞行器气动弹性分析中普遍采用基于偶极子网格法空气动力的机翼颤振计算方法。本文采用p-k法,以AGARD445.6机翼标准模型为算例,计算其在不同高度与飞行马赫数下的颤振速度和频率特性曲线,发现机翼在跨声速区域存在明显的"凹坑"物理特性,并且这些计算结果与试验值较为吻合。As the most dominant problem in aeroelasticity analysis,flutter is mainly emphasized in aircraft design.Nowadays,computational methods based on Double Lattice Formulation are adopted by researchers in aeroelasticity studies.In this paper,the p-k method is introduced to analyze the AGARD445.6 wing standard model,flutter velocities and frequencies at different heights as well as Maches are computed.Numerical results show that they are well matched with the experiment values.

关 键 词：颤振 AGARD445.6机翼 p-k法 偶极子网格法 

分 类 号：V21[航空宇航科学与技术—航空宇航推进理论与工程]