...
首页> 外文期刊>Aerospace science and technology >A trended Kriging model with R-2 indicator and application to design optimization
【24h】

A trended Kriging model with R-2 indicator and application to design optimization

机译:具有R-2指标的趋势Kriging模型及其在设计优化中的应用

获取原文
获取原文并翻译 | 示例
           

摘要

A trended Kriging model is known to improve the overall accuracy and efficiency of surrogate modeling; however, most studies have focused on a non-trended Kriging model because of the difficulty in the identification of a trend from an unknown data set. In the present study, an R-2 indicator for a Kriging surrogate model has been developed to identify the trend from a training data set. Both linear and nonlinear trends are identified with the R-2 indicator using the function analytic values and the function derivatives of the Kriging predictor. The trends identified by the indicator are used to determine the order of the drift function in the trended Kriging model. A trend identification of the Kriging model was validated with various analytic test functions. Subsequently, more practical uses of the R-2 indicator applied to actual responses from the Computational Fluid Dynamics (CFD) analysis of transonic airfoil. In Conclusion, the trended Kriging model can improve overall accuracy of responses if the maximum order of drift function is properly adjusted to the trend of sample space identified by the R-2 indicator. (C) 2015 Elsevier Masson SAS. All rights reserved.
机译:已知趋势Kriging模型可提高代理建模的整体准确性和效率。但是,由于难以从未知数据集中识别趋势,因此大多数研究都集中在非趋势克里格模型上。在本研究中,已经开发出用于克里格代理模型的R-2指标,以从训练数据集中识别趋势。使用R-2指标,使用Kriging预测器的函数分析值和函数导数,可以识别线性和非线性趋势。指标确定的趋势用于确定趋势Kriging模型中漂移函数的顺序。使用各种分析测试功能验证了克里格模型的趋势识别。随后,R-2指示器更实际地应用于跨音速翼型的计算流体动力学(CFD)分析的实际响应。总之,如果将漂移函数的最大阶数适当地调整为R-2指标所标识的样本空间趋势,则趋势Kriging模型可以提高响应的整体准确性。 (C)2015 Elsevier Masson SAS。版权所有。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号