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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Abstract
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/ | |||||||||||||||
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Document Type: | Contribution to a Collection | |||||||||||||||
Title: | Variable-Fidelity and Reduced-Order Models for Aero Data for Loads Predictions | |||||||||||||||
Authors: |
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Date: | 2013 | |||||||||||||||
Journal or Publication Title: | Computational Flight Testing | |||||||||||||||
Refereed publication: | No | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | No | |||||||||||||||
In ISI Web of Science: | No | |||||||||||||||
Volume: | 123 | |||||||||||||||
Page Range: | pp. 99-112 | |||||||||||||||
Editors: |
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Publisher: | Springer Verlag Berlin Heidelberg | |||||||||||||||
Series Name: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | |||||||||||||||
ISSN: | 1612-2909 | |||||||||||||||
ISBN: | 978-3-642-38876-7 | |||||||||||||||
Status: | Published | |||||||||||||||
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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