Variable-fidelity surrogate modeling offers an efficient way to generate aerodynamic data for aero-loads prediction based on a set of CFD methods with varying degree of fidelity and computational expense. In this paper, new algorithms, such as a Gradient-Enhanced Kriging method (direct GEK) and a generalized hybrid bridge function, have been developed to improve the efficiency and accuracy of the existing Variable-Fidelity Modeling (VFM) approach. These new algorithms and features are demonstrated and evaluated for analytical functions and used to construct a global surrogate model for the aerodynamic coefficients and drag polar of an RAE 2822 airfoil. It is preliminarily shown in this paper that they are very promising and can be used to significantly improve the efficiency and accuracy of VFM in the context of aero-loads prediction.


    Access

    Download


    Export, share and cite



    Title :

    On Improving Efficiency and Accuracy of Variable-Fidelity Surrogate Modeling in Aero-data for Loads Context


    Contributors:

    Conference:

    2009 ; Manchester, UK


    Publication date :

    2009-10-01


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    A Variable-Fidelity Modeling Method for Aero-Loads Prediction

    Han, Z.H. / Görtz, S. / Hain, R. | Tema Archive | 2010


    A Variable-Fidelity Modeling Method for Aero-Loads Prediction

    Han, Zhong-Hua / Görtz, Stefan / Hain, Rainer | German Aerospace Center (DLR) | 2008

    Free access

    Variable-Fidelity and Reduced-Order Models for Aero Data for Loads Predictions

    Görtz, Stefan / Zimmermann, Ralf / Han, Zhong-Hua | Springer Verlag | 2013


    Variable-Fidelity and Reduced-Order Models for Aero Data for Loads Predictions

    Gortz, S. / Zimmermann, R. / Han, Z.-H. | British Library Conference Proceedings | 2013


    Variable Fidelity Methods and Surrogate Modeling of Critical Loads on X-31 Aircraft

    Zhang, M. / Tomac, M. / Wang, C. et al. | British Library Conference Proceedings | 2013