【作者】 陈功； 徐明兴； 王文正；

【Author】 Chen Gong;Xu Mingxin;Wang Wenzheng;Computational Aerodynamics Institute,China Aerodynamics Research and Development Center;College of Aerospace Science,University of defense science and technology;

【机构】 中国空气动力研究与发展中心计算空气动力研究所； 国防科技大学空天科学学院；

【摘要】 本文以一种带小不对称部件的轴对称飞行器为对象,分别研究了响应面、三角级数和Kriging代理模型三种建模方法的气动建模过程,并对建模结果进行了对比分析。首先简要介绍了三种气动模型的数学形式,并采用误差缩减法确定了气动模型的结构。再采用残差最小准则解决了最优试验样本点的选择问题,并比较了在相同数量样本点时三种气动建模方法的模型预测精度。最后,基于Kriging模型的全局优化方法,开展了Kriging自适应建模方法在气动力建模上的应用研究。更多还原

【Abstract】 This paper researches the aerodynamic force modeling procession and compares the prediction results of response surface model,trigonometric series model and kriging metamodel for an axis symmetry vehicle with tiny asymmetry assembly unit.First,the three models’ mathematical expressions were introduced briefly,and the basic tactic forms of the models were decided by error curtail method.Then,the selection of optimal sample points is solved by using the minimum residual error rule,and the three aerodynamic force models’ prediction accuracy is compared with each other.At last,this paper researches the application of adaptive modeling algorithm for the aerodynamic fore modeling according to the global optimization method via kriging model.更多还原