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Modification of the SSG/LRR-omega RSM for Turbulent Boundary Layers at Adverse Pressure Gradient with Separation Using the New DLR VicToria Experiment

Knopp, Tobias and Novara, Matteo and Schanz, Daniel and Geisler, Reinhard and Philipp, Florian and Schroll, Michael and Willert, Christian and Schröder, Andreas (2020) Modification of the SSG/LRR-omega RSM for Turbulent Boundary Layers at Adverse Pressure Gradient with Separation Using the New DLR VicToria Experiment. In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 142, pp. 80-89. Springer Nature. 21. STAB/DGLR Symposium 2018, 6.-7. Nov. 2018, Darmstadt. DOI: 10.1007/978-3-030-25253-3_8 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_8

Abstract

We present a turbulent boundary layer flow experiment at a high Reynolds number and at a significant adverse pressure gradient leading to separation, which was performed within the DLR project VicToria. We describe the design of the test case, the set-up in the wind-tunnel, and the measurement technique using particle imaging and particle tracking with the novel Shake-The-Box technique. We present the experimental results for the mean velocity profiles and a wall-law for adverse pressure gradients. Then we consider RANS turbulence modelling and propose a modification of the equation for the dissipation rate ω in the SSG/LRR-ω model, so that the modified model can predict the proposed wall-law at adverse pressure gradients. Finally we show numerical results using the modified SSG/LRR-ω model. The modifications cause a reduction of the near-wall flow velocity at adverse pressure gradients making the modified model more susceptible for flow separation. Both observations are in good agreement with the experimental data.

Item URL in elib:https://elib.dlr.de/121699/
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:Modification of the SSG/LRR-omega RSM for Turbulent Boundary Layers at Adverse Pressure Gradient with Separation Using the New DLR VicToria Experiment
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Knopp, TobiasTobias.Knopp (at) dlr.deUNSPECIFIED
Novara, Matteomatteo.novara (at) dlr.deUNSPECIFIED
Schanz, Danieldaniel.schanz (at) dlr.deUNSPECIFIED
Geisler, ReinhardReinhard.Geisler (at) dlr.deUNSPECIFIED
Philipp, FlorianFlorian.Philipp (at) dlr.deUNSPECIFIED
Schroll, MichaelMichael.Schroll (at) dlr.dehttps://orcid.org/0000-0003-0736-546X
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181
Schröder, Andreasandreas.schroeder (at) dlr.dehttps://orcid.org/0000-0002-6971-9262
Date:2020
Journal or Publication Title:21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:142
DOI :10.1007/978-3-030-25253-3_8
Page Range:pp. 80-89
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:Turbulent boundary layer; adverse pressure Gradient; particle Image velocimetry; scaling; wall law; RANS turbulence modelling
Event Title:21. STAB/DGLR Symposium 2018
Event Location:Darmstadt
Event Type:international Conference
Event Dates:6.-7. Nov. 2018
Organizer:STAB/DGLR
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 - VicToria
Location: Göttingen , Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Institute of Propulsion Technology > Engine Measurement Systems
Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:15 Nov 2018 15:37
Last Modified:18 Jun 2020 09:29

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