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Schanz, Daniel und Schröder, Andreas und Heine, Benjamin und Dierksheide, Uwe (2012) Flow structure identification in a high-resolution tomographic PIV data set of the flow behind a backward facing step. 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 2012-07-09 - 2012-07-12, Lisbon, Portugal.
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Offizielle URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2012/program.asp
Kurzfassung
The flow behind a backward facing step of 6 mm in height has been investigated by means of high-resolution tomographic PIV. The shedding of vortices was stabilized by acoustic excitation, enabling phase-locked measurements of the flow field in a volume of 70x95x7 mm3. The gathered vector volumes with a vector spacing of approx. 0.25 mm in each direction were investigated by the method of conditional averaging. Basic flow structures, related to Q2 and Q4-events were extracted and their development in time was characterized, using methods of joint probability density functions of the fluctuations and of the invariants of the velocity gradient tensor.
| elib-URL des Eintrags: | https://elib.dlr.de/73469/ | ||||||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag, Paper) | ||||||||||||||||||||
| Titel: | Flow structure identification in a high-resolution tomographic PIV data set of the flow behind a backward facing step | ||||||||||||||||||||
| Autoren: |
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| Datum: | 2012 | ||||||||||||||||||||
| Referierte Publikation: | Nein | ||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||
| Seitenbereich: | Seiten 1-12 | ||||||||||||||||||||
| Name der Reihe: | Conference Proceedings online | ||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||
| Stichwörter: | Tomographic PIV, backward facing step, conditional averaging | ||||||||||||||||||||
| Veranstaltungstitel: | 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics | ||||||||||||||||||||
| Veranstaltungsort: | Lisbon, Portugal | ||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
| Veranstaltungsbeginn: | 9 Juli 2012 | ||||||||||||||||||||
| Veranstaltungsende: | 12 Juli 2012 | ||||||||||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||||||
| HGF - Programmthema: | Starrflügler (alt) | ||||||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||
| DLR - Forschungsgebiet: | L AR - Starrflüglerforschung | ||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - Simulation & Validierung (alt) | ||||||||||||||||||||
| Standort: | Göttingen | ||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hubschrauber Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren | ||||||||||||||||||||
| Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||
| Hinterlegt am: | 19 Jul 2012 09:38 | ||||||||||||||||||||
| Letzte Änderung: | 24 Apr 2024 19:39 |
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