基于CFD/CSD的大展弦比机翼气动弹性研究

摘要

考虑气动力非定常效应和惯性载荷作用对机翼气动弹性行为的影响,采用基于Euler方程和有限元的CFD/CSD耦合方法分析了大展弦比机翼的气动弹性时域响应,实现静、动气动弹性一体化计算.计算结果显示在相同马赫数下,机翼静变形随着飞行动压增大而增大;但是随着飞行高度的增加,机翼在进入稳态之前振荡越剧烈,响应超调越大,升力损失越小.%The main goal of this paper is to analyze the aeroelastic response of a high-aspect-ratio wing.CFD/CSD coupling based on euler equation and finite element method is presented to calculate the aeroelastic response of the wing with the influence of unsteady aerodynamic force and inertia load. The results show that the deformation of the wing increases with the flight dynamic increasing, whereas with the flight altitude increasing, the wing vibrates strongly before convergence and the losing of lift force decreases.