基于当地流活塞理论的翼-身组合体飞行器大攻角超声速颤振分析  

Supersonic flutter analysis of wing-fuselage complete vehicle of high attack angle with local piston theory based on CFD technology

作　　者：史晓鸣[1,2] 杨炳渊[2] 李海东[2] 唐国安[1] 

机构地区：[1]复旦大学力学与工程科学系,上海200433 [2]上海航天技术研究院第八设计部,上海200233

出　　处：《空气动力学学报》2012年第5期664-667,共4页Acta Aerodynamica Sinica

基　　金：国家自然科学基金(90716001)

摘　　要：基于当地流活塞理论推导了旋成体机身和任意外形三维机翼非定常气动力计算公式,结合CFD数值仿真,将当地流活塞理论推广用于复杂外形飞行器全机大攻角超声速颤振计算。以翼-身组合体面对称外形飞行器为例,进行带攻角的超声速颤振计算,并与非定常气动力采用CFD全数值仿真求解得到的颤振计算结果比较,验证了本文方法的正确性和效率。With CFD-based local piston theory, expressions have been derived for the unsteady aerody- namic forces acting on the fuselage and wing. The flutter characteristics of a wing-fuselage complete vehicle have been studied. The flutter boundary results by CFD-based local piston theory agree well with those by the CFD/CSD direct coupling method, demonstrating that this approach is suitable and efficient for the flut- ter analysis of a wing-fuselage complete vehicle at high angles of attack.

关 键 词：当地流活塞理论 CFD 大攻角 超声速颤振 

分 类 号：V215.54[航空宇航科学与技术—航空宇航推进理论与工程]