基于动态边界控制的优化方法在高升阻比气动外形优化中的初步应用

本文是利用动网格技术和有限体积法来研究基于动态边界控制的气动优化的方法.该优化方法是通过在求解非定常流动的过程中计算优化的目标函数随设计变量变化的梯度.而利用参数化的结构动网格技术能有效、快速地生成与优化过程出现的外形对应的网格并进行计算,具有较高的效率.本文以典型的高升阻比外形优化为例,用非定常NS方程为流动控制方程进行优化,取得了初步的结果.

Application of optimization method based on dynamic boundary control in configuration optimization of high lift-to-drag vehicle

The paper describes the application of optimization method based on dynamic boundary control for high lift-to-drag vehicle.By solving the unsteady flow control equations,we obtain the derivatives of cost function to design variables.By using parameterized structure dynamic mesh technique,we can get the mesh corresponding to the transforming configuration quickly,so the method is simplified.Results using unsteady Navier-Stokes equations for the representative hish lift-to-drag configuration are presented to demonstrate this method's efficiency and validity.