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机翼的气动特性从根本上决定了飞机巡航状态下的气动特性,经过良好设计的机翼会明显地提升全机的气动特性。连续共轭方程方法由于其求解梯度的计算量与设计变量数目无关,可以对复杂构型进行有效的优化设计。本文采用连续共轭方程方法对粘性条件下的机翼气动外形进行了优化设计。采用有限体积法进行流动控制方程和共轭方程的数值空间离散,多步Runge-Kutta方法进行时间推进,对于某三维机翼进行了有效的气动优化设计。
The aerodynamic characteristics of the wing fundamentally determine the aerodynamic characteristics of the aircraft cruising state, a well-designed wing will significantly improve the whole aerodynamic characteristics. The method of continuous conjugate equations can effectively optimize the complex configuration because of the fact that the computational complexity of solving the gradient is independent of the number of design variables. In this paper, a continuous conjugate equation method is used to optimize the aerodynamic shape of the wing under viscous conditions. The finite volume method was used to conduct the numerical simulation of flow control and conjugate equations. The multistep Runge-Kutta method was used for time advancement. The aerodynamic optimization of a three-dimensional wing was carried out.