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Unsteady Wake and Tailplane Loads of the Common Research Model in Low Speed Stall

Waldmann, Andreas and Konrath, Robert and Lutz, Thorsten and Krämer, Ewald (2020) Unsteady Wake and Tailplane Loads of the Common Research Model in Low Speed Stall. In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 142, 14- 24. Springer Nature. 21. STAB/DGLR Symposium 2018, 6. – 7. Nov. 2018, Darmstadt, Deutschland. DOI: 10.1007/978-3-030-25253-3_2 ISBN 978-3-030-25252-6 ISSN 1612-2909

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Official URL: https://doi.org/10.1007/978-3-030-25253-3_2

Abstract

Hybrid RANS/LES simulations of the flow around the NASA Common Research Model aircraft configuration were carried out with the focus on understanding the interaction of the separated wake with the tailplane in the presence of massively separated flow on the main wing. Validation of the CFD data using PIV data obtained for the flow conditions at α=16∘, α=18∘ and α=20∘ was carried out, confirming the generally satisfactory performance of the DDES simulations observed in earlier publications. As a next step, the wake characteristics and tailplane forces were evaluated for three angles of attack in order to investigate the flow dynamics in low speed stall. The separation characteristics were found to vary over the span. The wake size and downwash direction varied significantly with higher values of α. The altered wing downwash influenced the tailplane inflow, with the load fluctuations on the latter being significantly affected by the amount of turbulent kinetic energy present in the wake.

Item URL in elib:https://elib.dlr.de/124257/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Print ISBN 978-3-030-25252-6 Online ISBN 978-3-030-25253-3 ISSN-electronic 1860-0824
Title:Unsteady Wake and Tailplane Loads of the Common Research Model in Low Speed Stall
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Waldmann, Andreaswaldmann (at) iag.uni-stuttgart.deUNSPECIFIED
Konrath, RobertRobert.Konrath (at) dlr.deUNSPECIFIED
Lutz, ThorstenInstitute of Aerodynamics and Gas Dynamics, Universität StuttgartUNSPECIFIED
Krämer, EwaldInstitut für Aerodynamik und Gasdynamik Universität StuttgartUNSPECIFIED
Date:2020
Journal or Publication Title:21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:142
DOI :10.1007/978-3-030-25253-3_2
Page Range:14- 24
Editors:
EditorsEmailEditor's ORCID iD
Dillmann, Andreasandreas.dillmann@dlr.deUNSPECIFIED
Heller, GerdAirbus BremenUNSPECIFIED
Krämer, EwaldInstitut für Aerodynamik und Gasdynamik Universität StuttgartUNSPECIFIED
Wagner, ClausClaus.Wagner@dlr.deUNSPECIFIED
Tropea, CameronFachgebiet Strömungslehre und Aerodynamik, TU DarmstadtUNSPECIFIED
Jakirlic, SuadTU DarmstadtUNSPECIFIED
Publisher:Springer Nature
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-030-25252-6
Status:Published
Keywords:CFD, PIV, ETW, Common research model, High Reynolds number, Wing stall
Event Title:21. STAB/DGLR Symposium 2018
Event Location:Darmstadt, Deutschland
Event Type:international Conference
Event Dates:6. – 7. Nov. 2018
Organizer:STAB/DGLR
Institution:Deutsches Zentrum für Luft- und Raumfahrt e.V.
Department:AS-EXV GO
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
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Micknaus, Ilka
Deposited On:10 Jan 2019 04:19
Last Modified:17 Jun 2020 18:36

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