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/ | |||||||||||||||||||||||||||
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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 | |||||||||||||||||||||||||||
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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: |
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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 (old) | |||||||||||||||||||||||||||
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: | 09 Jul 2020 13:45 |
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