| 跨声速翼型优化设计的复变量方法应用研究 |
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| 引用本文： | 黄勇,陈作斌. 跨声速翼型优化设计的复变量方法应用研究[J]. 空气动力学学报, 2005, 23(4): 501-505,520 |
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| 作者姓名： | 黄勇 陈作斌 |
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| 作者单位： | 中国空气动力研究与发展中心总体技术部,四川,绵阳,621000;中国空气动力研究与发展中心总体技术部,四川,绵阳,621000 |
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| 摘 要： | 应用复变量方法计算目标函数关于设计变量的灵敏度,以此进行优化设计.该方法尽管计算量较大,但求灵敏度简单易行,适合目标函数比较复杂的情形,而且精度很高,几乎不受扰动步长影响,数值优化过程特别健壮,所以非常适用于设计变量不多或气动力计算很快的情况.
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| 关 键 词： | 翼型 外形优化 灵敏度 复变量方法 |
| 文章编号： | 0258-1825（2005）04-0501-05 |
| 收稿时间： | 2004-03-02 |
| 修稿时间： | 2004-03-022004-05-25 |
An investigation for the complex-variable method in shape optimization of transonic airfoils |
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| HUANG Yong,CHEN Zuo-bin. An investigation for the complex-variable method in shape optimization of transonic airfoils[J]. Acta Aerodynamica Sinica, 2005, 23(4): 501-505,520 |
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| Authors: | HUANG Yong CHEN Zuo-bin |
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| Affiliation: | China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China |
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| Abstract: | Sensitivities of an objective function with respect to design variables are evaluated using the complex-variable method in the present paper, which are used in the process of optimal design. Accurate sensitivities can be obtained by this method for complex objective functions in a very simple way, despite of high computational cost. With the independence of the accuracy of sensitivities to disturbing step-sizes, which leads to a robust numerical optimization iteration, this complex-variable method is viable in some cases, such as those with few design variables or with rapid computation capability for aerodynamic forces. |
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| Keywords: | airfoil shape optimization sensitivity complex-variable method |
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