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Adjoint Algorithms for the Optimization of 3d Turbulent Configurations

Dwight, Richard (2007) Adjoint Algorithms for the Optimization of 3d Turbulent Configurations. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 96. Springer.

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Abstract

The solution of the discrete adjoint equations for an unstructured finite volume compressible Navier-Stokes solver is discussed. In previous work fixedpoint iterations taken from the non-linear method - suitably adjointed - were applied to the adjoint problem. Here it is seen that there are often situations in which these iterations can not be expected to converge. To address this the Recursive Projection Method is developed as a stabilizer, and then used to perform an eigenmode analysis of attached and separated flow on a single geometry, allowing identification of flow regions that were unstable under the basic iteration. Finally an adjoint based optimization with 96 design variables is performed on a wing-body configuration. The initial flow has large regions of separation, which are significantly diminished in the optimized configuration.

Item URL in elib:https://elib.dlr.de/50779/
Document Type:Proceedings
Title:Adjoint Algorithms for the Optimization of 3d Turbulent Configurations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Dwight, RichardUNSPECIFIEDUNSPECIFIED
Date:2007
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:96
Editors:
EditorsEmail
Tropea, C.UNSPECIFIED
Jakirlic, S.UNSPECIFIED
Publisher:Springer
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Status:Published
Keywords:adjoint, optimization
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Dwight, Dr.(PH.D.) Richard
Deposited On:10 Aug 2007
Last Modified:31 Jul 2019 19:20

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