Lemarechal, Jonathan und Costantini, Marco und Klein, Christian und Kloker, Markus J. und Würz, Werner und Kurz, Holger B.E. und Schaber, Sven (2018) Investigation of Stationary-Crossflow-Instability Induced Transition with Temperature-Sensitive Paint Method. In: Proceedings of the 5th International Conference on Experimental Fluid Mechanics, Seite 81. 5th International Conference on Experimental Fluid Mechanics – ICEFM 2018 Munich, 2018-07-02 - 2018-07-04, München, Germany. doi: 10.18726/2018_2. ISBN 978-3-943207-32-3.
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Offizielle URL: https://athene-forschung.rz.unibw-muenchen.de/124410
Kurzfassung
The Temperature-Sensitive Paint (TSP) method is used for surface-based flow visualizations on a swept-wing wind-tunnel model with a generic natural laminar-flow profile. Within the investigated parameter range the stationary crossflow instability is the dominating instability mechanism. Based on the TSP results the location of the laminar-turbulent transition and the most amplified wavenumber of the stationary crossflow instability are derived. The test is performed with three different conditions of the leading-edge surface: highly polished, unpolished, and highly polished with discrete roughness elements applied. With the discrete roughness elements, i.e. cylindrical elements with micron-sized height, the transition could be delayed successfully for certain conditions. Local low-frequency movement of the beginning of turbulent wedges was detected for some data points with an unpolished leading edge. The Temperature-Sensitive Paint method has proven to have sufficient spatial resolution and temperature sensitivity to resolve skin friction variations to detect the footprint of stationary crossflow vortices even inside of turbulent wedges.
elib-URL des Eintrags: | https://elib.dlr.de/120937/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||
Titel: | Investigation of Stationary-Crossflow-Instability Induced Transition with Temperature-Sensitive Paint Method | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 2 Juli 2018 | ||||||||||||||||||||||||||||||||
Erschienen in: | Proceedings of the 5th International Conference on Experimental Fluid Mechanics | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||
DOI: | 10.18726/2018_2 | ||||||||||||||||||||||||||||||||
Seitenbereich: | Seite 81 | ||||||||||||||||||||||||||||||||
Herausgeber: |
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Name der Reihe: | Conference Proceedings online | ||||||||||||||||||||||||||||||||
ISBN: | 978-3-943207-32-3 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | Temperature-Sensitive Paint, TSP, Laminar-Turbulent Transition, Stationary Crossflow Instability, Upstream Flow Deformation, UFD, Discrete Roughness Elements, DRE | ||||||||||||||||||||||||||||||||
Veranstaltungstitel: | 5th International Conference on Experimental Fluid Mechanics – ICEFM 2018 Munich | ||||||||||||||||||||||||||||||||
Veranstaltungsort: | München, Germany | ||||||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 2 Juli 2018 | ||||||||||||||||||||||||||||||||
Veranstaltungsende: | 4 Juli 2018 | ||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Simulation und Validierung (alt) | ||||||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 16 Jul 2018 07:49 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:25 |
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