非定常动态演化伴随优化设计方法  

Unsteady dynamic evolution adjoint design method

作　　者：高莹莹[1] 何枫[1] 沈孟育[1] 

机构地区：[1]清华大学航天航空学院,北京100084

出　　处：《物理学报》2012年第20期42-52,共11页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10932005)资助的课题~~

摘　　要：研究了基于定常流动解和伴随方程定常解基础上的传统的伴随方法.在此基础上对定态飞行气动外形的优化设计提出了基于非定常流动控制方程瞬态解和非定常伴随方程瞬态解的新的优化方法,称之为动态演化伴随方法.这种新的优化方法保留了传统伴随方法适用于具有大数量设计变量的气动优化问题,而且比传统的伴随方法可节省大量的计算时间.大量算例计算结果表明,新方法与传统方法具有相同的精度.On the basis of studying the traditional adjoint method based on the steady flow solution and the steady solution of the adjoint equation, a new optimal aerodynamic design method called the dynamic evolution adjoint method is presented in this paper. This new method is based on the instantaneous solution of the unsteady flow governing equation and the instantaneous solution of the unsteady adoint equation. The dynamic evolution adjoint method has the advantage of both the adjoint method and the dynamic evolution method. The numerical results of many examples show that this new method is much more time saving than the traditional adjoint method and the accuracy of this new method can be the same as that of the traditional adjoint method.

关 键 词：气动优化 动态演化方法 伴随方法 动态演化伴随方法 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计]