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Adaptive Discontinuous Galerkin methods in aerodynamic flow simulations

Hartmann, Ralf (2008) Adaptive Discontinuous Galerkin methods in aerodynamic flow simulations. Conference on Modeling, Simulation and Optimization of Complex Processes (MOSOCOP 08), 2008-07-21 - 2008-07-25, Heidelberg.

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Abstract

Important quantities in aerodynamic flow simulations are the drag, lift and moment coefficients. Error estimation and goal-oriented refinement approaches have been developed for the accurate and efficient computation of single force coefficients. These approaches are based on computing an adjoint solution related to each of the force coefficients under consideration. The resulting goal-oriented adaptively refined meshes are specifically tailored to the accurate computation of the force coefficient under consideration. This approach has been extended to the accurate and efficient computation of multiple target quantities. Instead of computing multiple adjoint solutions, one for each target functional, the new approach is based on the computation of one adjoint and one adjoint-adjoint solution. This way only two auxiliary problems are required irrespective of the number on target functionals. Numerical results shown in this talk include 2d and 3d aerodynamic flows.

Item URL in elib:https://elib.dlr.de/57076/
Document Type:Conference or Workshop Item (Speech)
Title:Adaptive Discontinuous Galerkin methods in aerodynamic flow simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hartmann, RalfUNSPECIFIEDUNSPECIFIED
Date:21 July 2008
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Discontinuous Galerkin methods, adaptivity, error estimation, aerodynamic flow simulations
Event Title:Conference on Modeling, Simulation and Optimization of Complex Processes (MOSOCOP 08)
Event Location:Heidelberg
Event Type:international Conference
Event Dates:2008-07-21 - 2008-07-25
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 - Concepts & Integration (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Hartmann, Dr.rer.nat. Ralf
Deposited On:06 Jan 2009
Last Modified:31 Jul 2019 19:23

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