【摘要】 普遍采用大展弦比机翼的无人机,其气动弹性的问题显得尤为突出。本文主要研究基于非结构弹性网格体系的欧拉方程CFD计算及其在大展弦比无人机静气动弹性问题中的应用。针对三维非结构运动网格技术进行了研究和开发,在此基础上,利用计算流体力学的方法,发展了一套具有一定通用性的、适用于非结构网格的Euler方程流场求解器,并综合上面的技术,进一步通过耦合结构力学方程,对大展弦比无人机的静气动弹性问题进行了计算和分析。更多还原

【Abstract】 Aeroelastic phenomena are significant for the large aspect ratio wing UAV.A strategy for generating 3-D unstructured grids and the dynamic grids was has investigated.A set of flow field solver based on Euler equations was performed by using CFD method.The static aeroelastics problems of Blend wing body configuration UAV were investigated by coupled with structure dynamic equation.更多还原