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

Görtz, Stefan and Zimmermann, Ralf and Han, Zhong-Hua (2013) Variable-Fidelity and Reduced-Order Models for Aero Data for Loads Predictions. In: Computational Flight Testing Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 123. Springer Verlag Berlin Heidelberg. pp. 99-112. ISBN 978-3-642-38876-7. ISSN 1612-2909.

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This paper summarizes recent progress in developing meta-models for efficiently predicting the aerodynamic loads acting on industrial aircraft configurations. We introduce a physics-based approach to reduced-order modeling based on proper orthogonal decompostition of snapshots of the full-order CFD model, and a mathematical approach to variable-fidelity modeling that aims at combining many low-fidelity CFD results with as few high-fidelity CFD results as possible using bridge functions and variants of Kriging and Cokriging. In both cases, the goal is to arrive at a model that can be used as an efficient surrogate to the original high-fidelity or full-order CFD model but with significantly less evaluation time and storage requirements. Both approaches are demonstrated on industrial aircraft configurations at subsonic and transonic flow conditions.

Item URL in elib:https://elib.dlr.de/84751/
Document Type:Contribution to a Collection
Title:Variable-Fidelity and Reduced-Order Models for Aero Data for Loads Predictions
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Görtz, StefanStefan.Goertz (at) dlr.deUNSPECIFIED
Zimmermann, Ralfralf-zimmermann (at) tu-bs.deUNSPECIFIED
Han, Zhong-Huahanzh (at) nwpu.edu.cnUNSPECIFIED
Journal or Publication Title:Computational Flight Testing
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 99-112
EditorsEmailEditor's ORCID iD
Kroll, Norbertnorbert.kroll@dlr.deUNSPECIFIED
Radespiel, RolfTU BraunschweigUNSPECIFIED
van der Burg, Jan-WillemAirbus GmbH, BremenUNSPECIFIED
Sørensen, KaareCassidian, Manching, DeutschlandUNSPECIFIED
Publisher:Springer Verlag Berlin Heidelberg
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Keywords:Variable fidelity modeling (VFM), reduced order modeling (ROM), proper orthogonal decomposition (POD), Kriging, loads, aerodynamics, computational fluid dynamics (CFD)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Seyfried, Beate
Deposited On:18 Oct 2013 14:06
Last Modified:22 Jan 2018 16:50

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