Double-stage Metamodel and Its Application in Aerodynamic Design Optimization

Constructing metamodel with global high-fidelity in design space is significant in engineering design. In this paper, a double-stage metamodel （DSM） which integrates advantages of both interpolation metamodel and regression metamodel is constructed. It takes regression model as the first stage to fi...

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Bibliographic Details
Published in:Chinese journal of aeronautics 2011-10, Vol.24 (5), p.568-576
Main Authors: ZHANG, Dehu, GAO, Zhenghong, HUANG, Likeng, WANG, Mingliang
Format: Article
Language:English
Subjects:
Aerodynamics
Airfoils
BP neural network
Construction
Design optimization
Distributed memory
double-stage metamodel
genetic algorithm
Kriging
Latin hypercube
Metamodels
optimization
Parsec method
Regression
Wings (aircraft)
元模型
双级
回归模型
工程设计
应用
气动优化设计
空气动力学分析
设计空间
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Summary:Constructing metamodel with global high-fidelity in design space is significant in engineering design. In this paper, a double-stage metamodel （DSM） which integrates advantages of both interpolation metamodel and regression metamodel is constructed. It takes regression model as the first stage to fit overall distribution of the original model, and then interpolation model of regression model approximation error is used as the second stage to improve accuracy. Under the same conditions and with the same samples, DSM expresses higher fidelity and represents physical characteristics of original model better. Besides, in order to validate DSM characteristics, three examples including Ackley function, airfoil aerodynamic analysis and wing aerodynamic analysis are investigated, In the end, airfoil and wing aerodynamic design optimizations using genetic algorithm are presented to verify the engineering applicability of DSM.
ISSN:1000-9361
DOI:10.1016/S1000-9361(11)60066-6