摘要
采用自由变形技术实现对RAE2822跨声速翼型表面的参数化,采用试验设计方法对设计参数进行计算流体力学数值模拟样本训练,最后采用Kriging代理模型和MIGA、NLPQL优化算法进行优化分析,将得到的优化变量进一步进行计算流体力学分析获得最后的优化结果。计算结果显示,自由变形参数化方法简单易行,可实现直接对网格的变形;优化的结果相比于原始翼型,升阻比增加了57. 2%,从而证明了本文方法的可行性和有效性。
FFD(free-form deformation)technique was applied to achieve the parameterization of RAE2822 transonic airfoil.Then the method of DoE(design of experiment)was used to obtain the sample values of design parameters by CFD(computational fluid dynamics)numerical simulation.Lastly,the optimization analysis was carried out by using the Kriging surrogate model and MIGA,NLPQL optimization algorithm.The CFD values with optimized design parameters were regarded as the final results.The results show that the FFD parametric method can directly realize deformation on airfoil mesh.Compared with original airfoil,the lift-to-drag ratio of optimized airfoil increases by 57.2%,therefore,the proposed method is feasible and effective.
作者
陈立立
郭正
侯中喜
CHEN Lili;GUO Zheng;HOU Zhongxi(College of Aeronautics and Astronautics,National University of Defense Technology,Changsha 410073,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2018年第5期45-53,共9页
Journal of National University of Defense Technology
基金
湖南省研究生科研创新资助项目(CX2016B004)
关键词
RAE2822
自由变形
代理模型
升阻比
优化设计
RAE2822
free-form deformation
surrogate model
lift-to-drag ratio
optimization design
作者简介
陈立立(1990—),男,陕西礼泉人,博士研究生,E-mail:724043509@qq.com;郭正(通信作者),男,教授,博士,博士生导师,E-mail:guozheng@nudt.edu.cn。
