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Adjoint mesh deformation and adjoint-based sensitivities with respect to boundary values

Engels-Putzka, Anna and Frey, Christian (2012) Adjoint mesh deformation and adjoint-based sensitivities with respect to boundary values. In: Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012). 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), 10.-14. September 2012, Wien, Österreich. ISBN 978-3-9502481-9-7

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Abstract

This paper presents recent developments related to an adjoint RANS solver, which is part of the TRACE flow solver developed at DLR in particular for applications in turbomachinery. On the one hand, the implementation of an adjoint preprocess is described, which consists of two separate parts. First, the adjoint solution is transformed into a field of sensitivities with respect to grid point coordinates by calculating the derivative of the flow equation residual with respect to these coordinates. Second, an elliptic grid deformation procedure is adjoined in order to translate these sensitivities to surface values. The aim is to reduce the computational cost for sensitivity evaluations in applications with a large number of parameters by avoiding the generation of deformed volume grids. Furthermore, the evaluation of sensitivities with respect to boundary values, i.e. average quantities (for example pressure) which are prescribed at entry and exit surfaces, is discussed.

Item URL in elib:https://elib.dlr.de/81179/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Adjoint mesh deformation and adjoint-based sensitivities with respect to boundary values
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Engels-Putzka, Annaanna.engels-putzka (at) dlr.deUNSPECIFIED
Frey, ChristianChristian.Frey (at) dlr.deUNSPECIFIED
Date:2012
Journal or Publication Title:Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Eberhardsteiner, J.UNSPECIFIED
Böhm, H.J.UNSPECIFIED
Rammerstorfer, F.G.UNSPECIFIED
ISBN:978-3-9502481-9-7
Status:Published
Keywords:adjoint methods, mesh deformation
Event Title:6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012)
Event Location:Wien, Österreich
Event Type:international Conference
Event Dates:10.-14. September 2012
Organizer:Vienna University of Technology
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes
Deposited By: Engels-Putzka, Anna
Deposited On:25 Feb 2013 07:43
Last Modified:31 Jul 2019 19:40

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