Title

一种快速的有约束气动CFD优化方法

Translated Titles

Penalty Function Method Applied to Numerical Aerodynamic Optimization

Authors

黄国平(Guo-Ping Huang);梁德旺(De-Wang Liang)

Key Words

气动优化设计 ; 有约束优化 ; 计算流体力学 ; 进气道 ; 翼型 ; aerodynamic optimization design ; constrained optimization ; computational fluid dynamics ; inlet ; airfoil

PublicationName

南京航空航天大學學報

Volume or Term/Year and Month of Publication

37卷2期(2005 / 04 / 01)

Page #

150 - 154

Content Language

簡體中文

Chinese Abstract

提出了一种快速应用型罚函数法来求解有约束气动优化问题。多设计变量的优化算例表明:新方法与传统罚函数的序列极小化(SUMT)技术相比,避免了SUMT技术选择罚因子序列的问题,能在约束边界和不可行域进行计算,鲁棒性好,且求得约束最优点的效率高于SUMT技术,能减少30%~40%的计算量。本文分别将之与高分辨率Euler方程和N-S方程数值解相结合,进行了两个气动问题的优化。在二维无粘跨声速翼型的优化设计中,得到了升阻比明显提高的新翼型;对某型无人机高亚声速三维进气道设计,也获得了性能优秀的设计方案。

English Abstract

A new penalty function method is used for the constrained aerodynamic optimization. Comparisons between the new and original methods in model case with multi-variables of design show that the new method can save 30%~40% of computation with the same accuracy of optimization. Then, a numerical aerodynamic shape optimization system is constructed through combining the new method and a MUSCL solver for Euler or N-S equations. 2D and 3D aerodynamic design problems are optimized by the system. The optimization of inviscid transonic 2D airfoil achieves a better design and its ratio of C(subscript L)/C(subscript D) is obviously higher than original one. The design of 3D subsonic inlet of a UAV is satisfactory.

Topic Category 基礎與應用科學 > 基礎與應用科學綜合
工程學 > 工程學綜合