Constrained aerodynamic optimization of three-dimensional wings driven by Navier-Stokes computations

作     者：Epstein, B Peigin, S 

作者机构：Acad Coll Tel Aviv Yaffo Dept Comp Sci IL-64044 Tel Aviv Israel Israel Aircraft Ind Ltd Div Engn IL-70100 Ben Gurion Israel 

出 版 物：《AIAA JOURNAL》 (美国航空航天学会志)

年 卷 期：2005年第43卷第9期

页      面：1946-1957页

核心收录：

学科分类：08[工学] 0825[工学-航空宇航科学与技术] 

主　　题：AERODYNAMICS NAVIER-Stokes equations FLUID dynamics MATHEMATICAL optimization GENETIC algorithms PARTIAL differential equations 

摘      要：A robust and efficient approach to the multiobjective constrained design, previously developed by the authors, is extended to optimization of three-dimensional aerodynamic wings. The objective is to minimize the total drag at fixed lift subject to various geometrical and aerodynamical constraints. The approach employs genetic algorithms (GAs) as an optimization tool in combination with a reduced-order-models (ROM) method, based on linked local databases obtained by full Navier-Stokes computations. The work focuses on the following issues: geometrical representation of three-dimensional shapes, handling of sensitive nonlinear constraints such as pitching moment, and the influence of flight conditions on the results of optimization. The method, implemented in the computer code OPTIMAS (Optimization of Aerodynamic Shapes), was applied to the problem of multipoint transonic three-dimensional wing optimization with nonlinear constraints. The results include a variety of optimization cases for two wings: a classical test case of ONERA M6 wing and a generic cranked transport-type wing. For the investigated class of problems,, significant aerodynamic gains have been obtained.