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二维气动问题中Kriging代理模型精度影响因素

马洋 张青斌 韩启龙 华明军 李红霞

马洋, 张青斌, 韩启龙, 华明军, 李红霞. 二维气动问题中Kriging代理模型精度影响因素[J]. 航空动力学报, 2016, 31(11): 2665-2672. doi: 10.13224/j.cnki.jasp.2016.11.014
引用本文: 马洋, 张青斌, 韩启龙, 华明军, 李红霞. 二维气动问题中Kriging代理模型精度影响因素[J]. 航空动力学报, 2016, 31(11): 2665-2672. doi: 10.13224/j.cnki.jasp.2016.11.014
MA Yang, ZHANG Qing-bin, HAN Qi-long, HUA Ming-jun, LI Hong-xia. Factors influencing the accuracy of Kriging surrogate model in two-dimensional aerodynamic problem[J]. Journal of Aerospace Power, 2016, 31(11): 2665-2672. doi: 10.13224/j.cnki.jasp.2016.11.014
Citation: MA Yang, ZHANG Qing-bin, HAN Qi-long, HUA Ming-jun, LI Hong-xia. Factors influencing the accuracy of Kriging surrogate model in two-dimensional aerodynamic problem[J]. Journal of Aerospace Power, 2016, 31(11): 2665-2672. doi: 10.13224/j.cnki.jasp.2016.11.014

二维气动问题中Kriging代理模型精度影响因素

doi: 10.13224/j.cnki.jasp.2016.11.014
基金项目: 

第二炮兵工程大学科研基金青年项目(2015QNJJ034);国防科学技术大学科学研究项目(JC13-01-04)

详细信息
    作者简介:

    马洋(1982-),男,湖南常德人,讲师,博士,主要从事飞行器外形优化设计研究.

  • 中图分类号: V411.3

Factors influencing the accuracy of Kriging surrogate model in two-dimensional aerodynamic problem

  • 摘要: 以二维跨声速临界翼型的阻力特性为对象,探讨样本点数目、Kriging代理模型参数及其类型等对模型精度的影响.阻力系数采用计算流体力学(CFD)方法得到.模型精度的验证采用交叉验证方法,采用平均误差、最大误差和标准交叉验证残差来衡量Kriging代理模型的精度.研究结果表明:①Kriging代理模型预测气动阻力效果较好.②模型精度随样本点的增多而提高,剔除与样本点响应趋势不相符的“奇异点”后,模型精度显著提高,平均误差减小5%~38%,最大误差减小13%~77%.③核函数类型对模型精度的影响最大,相关参数次之,回归模型的影响最小.采用高斯相关函数、2阶多项式回归模型,以及合适的相关参数值时,Kriging代理模型的精度最高.

     

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出版历程
  • 收稿日期:  2015-02-02
  • 刊出日期:  2016-11-28

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