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Chimera Simulations of Transported Large-Scale Vortices and Their Interaction with Airfoils

Wolf, Christoph and Raichle, Axel and Knopp, Tobias and Schwamborn, Dieter (2010) Chimera Simulations of Transported Large-Scale Vortices and Their Interaction with Airfoils. In: New Results in Numerical and Experimental Fluid Mechanics VII Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 112. Springer-Verlag, Berlin Heidelberg. pp. 117-124. ISBN 978-3-642-14242-0. ISSN 1612-2909

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Official URL: http://link.springer.com/chapter/10.1007%2F978-3-642-14243-7_15

Abstract

A Chimera technique for moving grids is applied to simulate the transport of large-scale vortices convected by a mean velocity field over large distances and their interaction with an airfoil. While keeping the numerical dissipation at a minimum, the Chimera approach allows to resolve the vortex on a local fine grid whereas the unstructured global background grid can be relatively coarse. Having examined the vortex dissipation rate numerically, the interaction of a Rankine-like type vortex with a NACA 0012 airfoil and an ONERA-A airfoil near stall, respectively, is simulated. The interaction can be interpreted as a time-dependent variation in the effective angle of attack. A subsequent computation of a flapping NACA 0012 airfoil turns out to be an insufficient approximation of the vortex-airfoil interaction.

Item URL in elib:https://elib.dlr.de/67070/
Document Type:Contribution to a Collection
Title:Chimera Simulations of Transported Large-Scale Vortices and Their Interaction with Airfoils
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wolf, Christophchristoph.wolf (at) dlr.deUNSPECIFIED
Raichle, Axelaxel.raichle (at) dlr.deUNSPECIFIED
Knopp, TobiasTobias.Knopp (at) dlr.deUNSPECIFIED
Schwamborn, Dieterdieter.schwamborn (at) dlr.deUNSPECIFIED
Date:2010
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics VII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:112
DOI :10.1007/978-3-642-14243-7_15
Page Range:pp. 117-124
Editors:
EditorsEmail
Dillmann, AndreasDLR
Heller, GerdAirbus Deutschland
Klaas, MichaelRWTH Aachen
Kreplin, Hans-PeterDLR
Nitsche, WolfgangTU Berlin
Schroeder, WolfgangRWTH Aachen
Publisher:Springer-Verlag, Berlin Heidelberg
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-642-14242-0
Status:Published
Keywords:Chimera, vortex-airfoil interaction, stall, disturbed onflow conditions
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 , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:21 Dec 2010 12:48
Last Modified:02 Mar 2015 09:57

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