Dimond, Benjamin and Costantini, Marco and Risius, Steffen and Klein, Christian and Rein, Martin (2020) Experimental Investigation of the Delay of Gap- and Step-Induced Transition by Means of Suction. In: 21st STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics, 142, pp. 165-174. Springer Nature. 21. STAB/DGLR Symposium 2018, 2018-11-06 - 2018-11-07, Darmstadt, Deutschland. doi: 10.1007/978-3-030-25253-3_16. 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_16
Abstract
The influence of suction on gap- and step-induced boundary-layer transition was investigated experimentally and systematically for large chord Reynolds numbers (up to 16×106) and various pressure gradients at Mach number 0.6. The experiments were conducted in the low-turbulence Cryogenic Ludwieg-Tube Göttingen with a two-dimensional wind-tunnel model. Transition is detected non-intrusively by means of temperature-sensitive paint. Forward-facing steps and spanwise gaps have caused transition to occur at a more upstream location as compared to a smooth configuration at the same test conditions. Applying suction through the gap, however, was shown to significantly delay transition and even overcompensate the adverse effect of steps and gaps. Further increasing suction rate shifts transition even more downstream until a certain value of suction is reached, above which there is effectively no change in transition location even for larger suction rates.
Item URL in elib: | https://elib.dlr.de/122973/ | ||||||||||||||||||||||||||||
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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: | Experimental Investigation of the Delay of Gap- and Step-Induced Transition by Means of Suction | ||||||||||||||||||||||||||||
Authors: |
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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: | No | ||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||
Volume: | 142 | ||||||||||||||||||||||||||||
DOI: | 10.1007/978-3-030-25253-3_16 | ||||||||||||||||||||||||||||
Page Range: | pp. 165-174 | ||||||||||||||||||||||||||||
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: | Laminar-Turbulent Transition, Suction, Surface Imperfections, Temperature-Sensitive Paint | ||||||||||||||||||||||||||||
Event Title: | 21. STAB/DGLR Symposium 2018 | ||||||||||||||||||||||||||||
Event Location: | Darmstadt, Deutschland | ||||||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||||||
Event Start Date: | 6 November 2018 | ||||||||||||||||||||||||||||
Event End Date: | 7 November 2018 | ||||||||||||||||||||||||||||
Organizer: | STAB/DGLR | ||||||||||||||||||||||||||||
Institution: | Deutsches Zentrum für Luft- und Raumfahrt e.V. | ||||||||||||||||||||||||||||
Department: | AS-EXV / AS-HGK | ||||||||||||||||||||||||||||
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: | Göttingen | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Experimental Methods, GO Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO | ||||||||||||||||||||||||||||
Deposited By: | Micknaus, Ilka | ||||||||||||||||||||||||||||
Deposited On: | 03 Dec 2018 14:25 | ||||||||||||||||||||||||||||
Last Modified: | 17 Feb 2025 14:30 |
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