飞翼式客机机翼气动/结构综合优化方法研究

针对目前在飞翼客机机翼优化过程中对气动弹性效应考虑不充分、气动/结构耦合不充分的问题，分别对飞翼客机机翼的CFD（Computational Fluid Dynamics，简称CFD）气动模型、平板气动模型和三维板杆模型进行参数化建模，开展了针对飞翼布局客机机翼的气动/结构综合优化设计的研究，搭建了一套基于Kriging模型的前瞻性设计方法，获得了机翼最优的气动外形和结构构型，在有效降低机翼结构重量的同时，显著地减少了气动阻力。在满足精度及效率的前提下，气动子学科选用亚声速偶极子格网法以及基于Euler方程的CFD方法，结构子学科选用有限元分析方法，优化算法采用遗传算法。

Aerodynamic/Structural Intergrated Designfor the Wing of Flying Wing Airliner

Aiming at the problem of inadequate consideration of aeroelasticity and inadequate consideration of aerodynamic/structural coupling in the optimization of the flying wing aircraft, this article use a kind of parametric modeling method for the CFD (Computational Fluid Dynamics) aerodynamic model, flat aerodynamic model and three dimensional panel bar model of the wing, and set up a set of prospective design methods based on Kriging model. By optimum design, the optimal aerodynamic shape and structural configuration of the wing are obtained, which has smaller aerodynamic drag and weight than the initial three dimensional panel bar model of the wing. On the premise of satisfying precision and calculating efficiency, the subsonic doublet grid method and the CFD method based on Euler equation are selected for the aerodynamic sub discipline, while the finite element analysis method is adopted for the structural sub discipline and the genetic algorithm is used for optimization algorithm.