结构/非结构网格中的数值优化计算

拓双芬; 朱自强; 陈迎春

结构/非结构网格中的数值优化计算

北京航空航天大学飞行器设计与应用力学系, 北京 100083

基金项目: 自然科学基金资助项目(19972007)

详细信息

作者简介:
拓双芬(1977-),女,陕西铜川人,硕士生, tuosf@sohu.com.

中图分类号: V 211.3
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- 文章访问数: 1893
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- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2002-07-17
- 网络出版日期: 2003-09-30

Numerical optimization in a structured/unstructured grid

Dept. of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 非结构网格因其在处理外形方面所具有的特殊优越性而倍受关注.在结构/非结构网格中做了粘性流动的数值优化计算,优化计算包括单目标和双目标气动优化,以及反设计计算,即从初始翼型不断修型而实现给定翼型的外形及压力分布的目标.算例及其结果分析证明了该方法用于翼型的修型和设计计算的有效性.
- 目标函数 /
- 网格生成 /
- 优化算法 /
- 非结构网格
Abstract: Much attention had been shifted to the unstructured grid methods. It was due to the relative ease with which these methods could be applied to solve flow problems around complex geometries and the ease with which local refinement of an unstructured grid could be carried out. Numerical optimization and inverse design computation with the viscous flow field were carried out on a structured/unstructured grid. Both mono-objective/bi-objective aerodynamic optimization were included in the numerical optimization. The conventional inverse design, in which the airfoil shape was modified by the required target pressure distribution imposed on an initial airfoil, was realized by present optimization method. Numerical results illustrate that the present method is an efficient tool for airfoil design.
- objective function /
- grid generation /
- optimization method /
- unstructured grid

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参考文献(1)

[1] 朱自强,吴子牛,李津,等. 应用计算流体力学[M]. 北京:北京航空航天大学出版社, 1998 Zhu Ziqiang, Wu Ziniu, Li Jin, et al. Application computational fluid dynamics[M]. Beijing:Beijing University of Aeronautics and Astronautics Press,1998(in Chinese) [2] 王平,朱自强,拓双芬,等. 二维结构/非结构混合网格的生成及其流场模拟[J]. 航空学报, 2001, 22(6):536~538 Wang Pin, Zhu Ziqiang, Tuo Shuangfen, et al. 2D structured/unstructured grid generation and simulating of flow[J]. Acta Aeronautica et Astronautica Sinica,2001,22(6):536~538(in Chinese) [3] Lion M S. Progress towards an improved CFD method :AUSM⁺. AIAA 95-1701, 1995 [4] Baldwin B S, Lomax H. Thin layer approximation algebraic model for separated turbulent flow. AIAA 78-257,1978 [5] 朱自强,李海明,李津. 空气动力学/电磁学双学科优化方法的讨论[J]. 中国科学(E辑),2000,30(3):208~215 Zhu Ziqiang, Li Haiming, Li Jin.A study of aerodynamic/electromagnetism bidisciplinapy optimization method[J].Science in China(series E),2000,30(3):208~215(in Chinese) [6] Powell, MJD. An efficient method for finding the minimum of a function of several variables without calculation derivatives. Computer Journal, 1964, 7:155~162 [7] 吁日新.多目标/多学科优化方法的研究. 北京:北京航空航天大学,2002 Yu Rexin. A study of multiobjective/multidisciplinary optimization method. Beijing:Beijing University of Aeronautics and Astronautics, 2002(in Chinese) [8] Zhu Z Q, Islam Z, Zhu Y K. The numerical optimization computation of fluid/electromagnetic fields[J]. Comp Fluid Dyn J, 1998,7(2):229~244 [9] Hager J O, Eyi S, Lee K D. Multi-point design of transonic airfoils using optimzation. AIAA 92-425,1992

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