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Wiegel, M. und Fischer, M. (1995) Utilizing a Laser Light Sheet Technique in a Boundary-Layer Flow to Study Different Transition Types. In: 7th International Symposium on Flow Visualization, Seiten 432-437. 7th International Symposium on Flow Visualization, Seattle, Washington, USA, Sept. 11-14, 1995.
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Kurzfassung
A non-intrusive flow visualization technique for investigations in a boundary layer in air utilizing a laser-light sheet technique with adequate seeding is presented. The non-intrusive homogeneous seeding of the flow was realized by feeding the tracer particles into the flow with a seeding-rake located upstream of the grid and screens of the wind tunnel. We could also present a sophisticated excitation device which provided reproducible and constant initial conditions of the boundary-layer instabilities. Selecting different combinationsof the excitation signals, it was possible to investigate besides thefundamental and subharmonic transition the development of a single oblique wave and the oblique transition. This excitation together with the stated visualization technique enabled us to investigate effectively different transition types. Another important feature of this set-up is the phase-locked recording against the excitation signal facilitating the recording at a chosen phase with respect.
| Dokumentart: | Konferenzbeitrag (Paper) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Zusätzliche Informationen: | LIDO-Berichtsjahr=1995, | |||||||||
| Titel: | Utilizing a Laser Light Sheet Technique in a Boundary-Layer Flow to Study Different Transition Types | |||||||||
| Autoren: |
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| Datum: | 1995 | |||||||||
| Erschienen in: | 7th International Symposium on Flow Visualization | |||||||||
| In Open Access: | Nein | |||||||||
| In SCOPUS: | Nein | |||||||||
| In ISI Web of Science: | Nein | |||||||||
| Seitenbereich: | Seiten 432-437 | |||||||||
| Status: | veröffentlicht | |||||||||
| Stichwörter: | Non-Intrusive Flow Visualization, Laser Light Sheet, Boundary-Layer Flow | |||||||||
| Veranstaltungstitel: | 7th International Symposium on Flow Visualization, Seattle, Washington, USA, Sept. 11-14, 1995 | |||||||||
| 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 > Institut für Experimentelle Strömungsmechanik | |||||||||
| Hinterlegt von: | DLR-Beauftragter, elib | |||||||||
| Hinterlegt am: | 03 Apr 2006 | |||||||||
| Letzte Änderung: | 27 Apr 2009 10:08 |
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