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

Han, Zhong-Hua und Görtz, Stefan und Zimmermann, Ralf (2009) On Improving Efficiency and Accuracy of Variable-Fidelity Surrogate Modeling in Aero-data for Loads Context. CEAS 2009 European Air and Space conference, 26-29 Oct. 2009, Manchester, UK.

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Kurzfassung

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.

Dokumentart:Konferenzbeitrag (Vorlesung, Paper)
Titel:On Improving Efficiency and Accuracy of Variable-Fidelity Surrogate Modeling in Aero-data for Loads Context
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Han, Zhong-HuaZhong-Hua.Han@dlr.de
Görtz, StefanStefan.Goertz@dlr.de
Zimmermann, RalfRalf.Zimmermann@dlr.de
Datum:Oktober 2009
Referierte Publikation:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Variable-fidelity modeling,kriging, gradient-enhanced kriging hybrid bridge function
Veranstaltungstitel:CEAS 2009 European Air and Space conference
Veranstaltungsort:Manchester, UK
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:26-29 Oct. 2009
Veranstalter :The Royal Aeronautical Society of UK
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Flugphysik
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik
Hinterlegt von: Dr. Zhong-hua Han
Hinterlegt am:26 Nov 2009 11:04
Letzte Änderung:12 Dez 2013 20:45

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