Stolte, A. und Bertolotti, F.P. und Koch, W. (1999) Secondary instability and transition in three-dimensional boundary layers. In: GAMM 1998, III, Seiten 705-706. GAMM Jahrestagung, Bremen, 06.-09. April 1998. ISBN 0946-8463.
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Kurzfassung
In the highly accelerated three-dimensional flow near the leading edge of a swept wing stationary and travelling crossflow modes are the most prominent disturbances. Near transition onset secondary three-dimensional instabilities of high frequency can be observed in such flows. A model flow on the basis of a DLR swept plate experiment allows a detailed study of transition scenarios triggered by crossflow instabilities, since the favourable pressure gradient over the whole plate inhibits instabilities of Tollmien-Schlichting type. In order to shed some light upon the role of the high-frequency secondary instabilities, the saturation characteristics of crossflow vortices in this model flow are investigated using the parabolised stability equations [1]. In contrast to nonlinear equilibrium solutions [3] of steady crossflow vortices, the PSE results yield different maximal disturbance amplitudes for different initial amplitudes
elib-URL des Eintrags: | https://elib.dlr.de/13434/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Paper) | ||||||||||||||||
Zusätzliche Informationen: | LIDO-Berichtsjahr=1999, | ||||||||||||||||
Titel: | Secondary instability and transition in three-dimensional boundary layers | ||||||||||||||||
Autoren: |
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Datum: | 1999 | ||||||||||||||||
Erschienen in: | GAMM 1998 | ||||||||||||||||
Open Access: | Nein | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
Band: | III | ||||||||||||||||
Seitenbereich: | Seiten 705-706 | ||||||||||||||||
Herausgeber: |
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Name der Reihe: | ZAMM - Z. angew. Math. Mech., Vol. 79 | ||||||||||||||||
ISBN: | 0946-8463 | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | crossflow instability, DLR flat plate experiment, nonlinear mean-flow distortion, secondary instability | ||||||||||||||||
Veranstaltungstitel: | GAMM Jahrestagung, Bremen, 06.-09. April 1998 | ||||||||||||||||
Veranstalter : | GAMM | ||||||||||||||||
HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||
HGF - Programmthema: | keine Zuordnung | ||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||
DLR - Forschungsgebiet: | L TG - Querschnittstechnologien | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | NICHT SPEZIFIZIERT | ||||||||||||||||
Standort: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Institut für Strömungsmechanik | ||||||||||||||||
Hinterlegt von: | DLR-Beauftragter, elib | ||||||||||||||||
Hinterlegt am: | 16 Sep 2005 | ||||||||||||||||
Letzte Änderung: | 14 Jan 2010 20:26 |
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