elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

A framework for surrogate-based aerodynamic optimization

Li, Chunna and Brezillon, Joël and Görtz, Stefan (2011) A framework for surrogate-based aerodynamic optimization. ODAS 2011, 9-11 Feb 2011, Toulouse, France.

[img]
Preview
PDF
439kB

Abstract

At DLR, an optimization framework combining different CFD solvers, Design of Experiment methods, optimization algorithms, and various surrogate modeling methodologies with sample refinement strategies for efficient surrogate-based global optimization is under development. Several Kriging predictors are used because of their ability to approximate multi-dimensional, highly-nonlinear functions. In order to find global optima accurately, the surrogate model is adaptively refined based on the Kriging error and the Expected Improvement Function. With this hybrid refinement strategy, only a few initial samples need to be evaluated, which improves the performance of the overall optimization process. Additionally, the strategy of running a local optimizer starting from the “optimum” found on the surrogate model is investigated in order to further improve the efficiency and accuracy of the framework. Two test cases indicate that the developed framework combined with hybrid strategy is more efficient.

Item URL in elib:https://elib.dlr.de/72628/
Document Type:Conference or Workshop Item (Paper)
Title:A framework for surrogate-based aerodynamic optimization
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Li, ChunnaChunna.li (at) dlr.deUNSPECIFIED
Brezillon, JoëlJoel.Brezillon (at) dlr.deUNSPECIFIED
Görtz, StefanStefan.Goertz (at) dlr.deUNSPECIFIED
Date:2011
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:Surrogate-based optimization, Optimization framework, Refinement strategy, Surrogate Model (SGM)
Event Title:ODAS 2011
Event Location:Toulouse, France
Event Type:Conference
Event Dates:9-11 Feb 2011
Organizer:ONERA-DLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Optische Systeme (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Li, Chunna
Deposited On:03 Jan 2012 11:22
Last Modified:31 Jul 2019 19:33

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.