Costantini, Marco und Risius, Steffen und Fuchs, Carsten und Klein, Christian (2017) Experimental investigation of surface imperfection effects on boundary-layer transition using temperature-sensitive paints. 6th German-Japanese Joint Seminar, 2017-09-25 - 2017-09-27, Stuttgart, Deutschland.
Dieses Archiv kann nicht den Volltext zur Verfügung stellen.
Kurzfassung
The effect of sharp forward-facing steps and sinusoidal bumps on boundary-layer transition was systematically investigated in this experimental work in combination with the influence of variations in the following parameters: streamwise pressure gradient, Reynolds number and Mach number. The experiments were conducted in a quasi-two-dimensional flow at high Reynolds numbers and at both low and high subsonic Mach numbers in the Cryogenic Ludwieg-Tube Göttingen. The adopted experimental setup enabled an independent variation of the aforementioned parameters and allowed a decoupling of their respective effects on the boundary-layer transition. Transition, measured non-intrusively by means of temperature-sensitive paint, was found to move gradually upstream towards the imperfection location with increaslng non-dimensional imperfection parameters. Stronger flow acceleration led to an increase in the transltlon Reynolds number even in the presence of forward-facing steps and bumps; this favorable influence became, however, less pronounced at larger values of the non-dimensional lmperfection parameters.
elib-URL des Eintrags: | https://elib.dlr.de/118201/ | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Titel: | Experimental investigation of surface imperfection effects on boundary-layer transition using temperature-sensitive paints | ||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||
Datum: | 2017 | ||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Temperature-Sensitive Paint, Boundary Layer, Transition, Surface lmperfection | ||||||||||||||||||||
Veranstaltungstitel: | 6th German-Japanese Joint Seminar | ||||||||||||||||||||
Veranstaltungsort: | Stuttgart, Deutschland | ||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
Veranstaltungsbeginn: | 25 September 2017 | ||||||||||||||||||||
Veranstaltungsende: | 27 September 2017 | ||||||||||||||||||||
Veranstalter : | Universität Hohenheim | ||||||||||||||||||||
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: | Bachmann, Barbara | ||||||||||||||||||||
Hinterlegt am: | 31 Jan 2018 11:37 | ||||||||||||||||||||
Letzte Änderung: | 21 Jun 2024 08:35 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags