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Direct TS-Wave Simulation on a Laminar Wing-Profile with Forward-Facing Step

Lüdeke, Heinrich and Backhaus, Kai (2017) Direct TS-Wave Simulation on a Laminar Wing-Profile with Forward-Facing Step. In: New Results in Numerical and Experimental Fluid Mechanics XI, 136, pp. 275-284. Springer International Publishing. 20. DGLR/STAB Symposium, 8.-9.11.2016, Braunschweig, Deutschland. ISBN 978-3-64518-6. ISSN 1612-2909.

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Official URL: http://www.springer.com/de/book/9783319645186


Within the following computational study, Tollmien-Schlichting waves will be simulated behind a step on a laminar profile by direct numerical simulations. The airfoil geometry is designed as a reference-configuration for wind tunnel experiments. The character of the dominating transition mechanism by Tollmien-Schlichting waves allows a 2D approach. A well-validated high-order numerical scheme is chosen, which is adapted for detailed simulations of transitional modes. All simulations of the instabilities were carried out on the original airfoil-geometry by using an entirely resolved step-region. The central part of the airfoil in the open test-section of DNW-NWB contains an adjustable inset to allow settings of different forward and backword-facing steps, comparable with high-resolution CFD-results. Efficient time-accurate simulations of the TS-mode growth were carried out on extracted CFD-grids of the critical region. Determining growth rates of these modes allow comparison with Linear Stability Theory (LST) and the prediction of the laminar-turbulent transition.

Item URL in elib:https://elib.dlr.de/118636/
Document Type:Conference or Workshop Item (Speech)
Title:Direct TS-Wave Simulation on a Laminar Wing-Profile with Forward-Facing Step
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lüdeke, Heinrichheinrich.luedeke (at) dlr.deUNSPECIFIED
Backhaus, Kaibackhaus.kai (at) gmail.comUNSPECIFIED
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics XI
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 275-284
EditorsEmailEditor's ORCID iD
Dillmann, AndreasDLR GöttingenUNSPECIFIED
Heller, GerdAirbus BremenUNSPECIFIED
Krämer, EwaldUni StuttgartUNSPECIFIED
Wagner, ClausDLR GöttingenUNSPECIFIED
Bansmer, StephanTU BraunschweigUNSPECIFIED
Radespiel, RolfTU BraunschweigUNSPECIFIED
Semaan, RichardTU BraunschweigUNSPECIFIED
Publisher:Springer International Publishing
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Keywords:DNS, ATLATUS project, Laminar wing, Forward Facing Step, TS-Wave, transition
Event Title:20. DGLR/STAB Symposium
Event Location:Braunschweig, Deutschland
Event Type:national Conference
Event Dates:8.-9.11.2016
Organizer:Deutsche Strömungsmechanische Arbeitsgemeinschaft
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Institute of Aeroelasticity > Aeroelastic Simulation
Deposited By: Seyfried, Beate
Deposited On:31 Jan 2018 14:28
Last Modified:31 Jan 2018 14:28

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