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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. doi: 10.1007/978-3-642-14243-7_15. 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


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
AuthorsInstitution or Email of AuthorsAuthor's 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
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics VII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/978-3-642-14243-7_15
Page Range:pp. 117-124
EditorsEmailEditor's ORCID iD
Heller, GerdAirbus DeutschlandUNSPECIFIED
Klaas, MichaelRWTH AachenUNSPECIFIED
Nitsche, WolfgangTU BerlinUNSPECIFIED
Schroeder, WolfgangRWTH AachenUNSPECIFIED
Publisher:Springer-Verlag, Berlin Heidelberg
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
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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