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论文:2013,Vol:31,Issue(5):829-836 |
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引用本文： |
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卜月鹏, 宋文萍, 韩忠华, 许建华. 基于CST参数化方法的翼型气动优化设计[J]. 西北工业大学 |
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Bu Yuepeng, Song Wenping, Han Zhonghua, Xu Jianhua. Aerodynamic Optimization Design of Airfoil Based on CST Parameterization Method[J]. Northwestern polytechnical university |
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| 基于CST参数化方法的翼型气动优化设计 |
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| 卜月鹏, 宋文萍, 韩忠华, 许建华 |
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| 西北工业大学 翼型叶栅空气动力学国防科技重点实验室, 陕西 西安 710072 |
| 摘要: |
| 翼型参数化方法的优劣对最终优化设计结果有着非常重要的影响,它是决定优化设计效率和最终优化效果的关键因素。针对翼型外形的不同表达方式(分为翼型直接CST、扰动CST和中弧线叠加厚度分布CST等),分别发展了相应的CST参数化程序,并将其应用于翼型气动优化设计,研究几种不同参数化方式的优化结果和优化效率。RAE2822翼型单目标减阻优化设计的研究表明,基于CST的三种参数化方法和基于Hicks-Henne函数的参数化方法的减阻效果相当,但计算时间相差很大。在设计变量数相当的情况下,扰动CST方法和中弧线叠加厚度分布CST方法的设计效率高于直接CST参数化方法和Hicks-Henne参数化方法而中弧线叠加厚度分布CST的优化效率略高于扰动CST。DU93-w-210翼型单目标最大升阻比优化设计的研究进一步说明中弧线叠加厚度分布CST的优化效率略高于扰动CST。 |
| 关键词:
翼型设计
减阻
效率
残差
流程图
函数
升阻比
参数化
几何优化
跨声速空气动力学
风力机
CST(类函数/形函数转变)
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| Aerodynamic Optimization Design of Airfoil Based on CST Parameterization Method |
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| Bu Yuepeng, Song Wenping, Han Zhonghua, Xu Jianhua |
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| National Key Laboratory of Science and Technology on Aerodynamic Design and Ｒesearch, College of Aeronautics, Northwestern Polytechnical University |
| Abstract: |
| Airfoil parameterization method has a very important impact on final optimization result. It has significant influence on the optimization design efficiency and result. In this paper,CST(Class function/ Shape function Transformation) method is introduced to describe the airfoil shape with different geometrical parameters: direct CST,perturbed CST,and mean camber and thickness distribution CST. These parameterization methods are applied to airfoil optimization and the corresponding design results and efficiency are compared with each other. Drag minimization of a transonic airfoil is studied,by using the direct CST method,the perturbed CST method,the mean camber and thickness distribution CST method and the Hicks-Henne parameterization method for different orders.The results show that,the above four parameterization methods have nearly identical drag reduction effect but the respective computational costs are quite different. The perturbed CST and mean camber and thickness distribution CST are more efficient than the direct CST method and Hicks-Henne parameterization method with almost equivalent number of design variables. To further compare the optimization effect of the perturbed CST and mean camber and thickness distribution CST under fourth order Bernstern polynomial,lift drag ratio maximization of a wind turbine airfoil is studied. The results and their analysis show preliminarily that mean camber and thickness distribution CST appears appreciably more efficient than the perturbed CST. |
| Key words:
airfoils
design
drag reduction
efficiency
errors
flowcharting
functions
lift drag ratio
parameterization
shape optimization
transonic aerodynamics
wind turbines
CST (Class function/Shape function Transformation)
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| 收稿日期: 2012-09-06
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(112722651);国家高技术发展计划(2012AA051301)资助 |
| 通讯作者:
Email： |
| 作者简介: 卜月鹏(1988-),西北工业大学硕士研究生,主要从事理论与计算流体力学研究。
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参考文献: |
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