Novara, Matteo und Schanz, Daniel und Geisler, Reinhard und Schröder, Andreas (2018) Applications of Multi-Pulse Shake-The-Box 3D Lagrangian Particle Tracking to single- and multi-exposed recordings. 18th International Symposium on Flow Visualization, 2018-06-26 - 2018-06-29, Zurich, Switzerland.
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Offizielle URL: http://www.isfv18.ethz.ch/programme.html
Kurzfassung
Lagrangian particle tracking (LPT) enables the accurate measurement of position, velocity and acceleration of single seeding tracers imaged by a multiple camera system. The Shake-The-Box (STB) technique extended the capabilities of 3D particle tracking methods to higher seeding densities, thus providing access to the full velocity gradient tensor. The STB method, initially proposed for the reconstruction of time-resolved sequences of recordings, has been extended to the case of short recording sequences acquired by multi-pulse systems for the investigation of high-speed flows. The Multi-Pulse Shake-The-Box technique (MP-STB) exploits an iterative strategy to make up for the lack of time-resolved recordings and progressively simplify the reconstruction and tracking problem, therefore increasing the number of successfully identified particle tracks. Individual track fields from MP-STB can be exploited to describe the instantaneous flow structures by means of interpolation to a regular grid or collected into bins with an ensemble-average approach to produce highly spatially resolved statistics. Several applications of the MP-STB technique to turbulent boundary layer flows and to a high speed free jet in air are presented here. The experimental conditions are described together with the main processing parameters adopted for the iterative STB strategy. The multi-pulse recording sequences are obtained by means of two pulse separation techniques (polarization- and timing-based) and by adopting Multi-Exposed recordings. Results are shown in terms of instantaneous fields and flow statistics.
elib-URL des Eintrags: | https://elib.dlr.de/120943/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||
Zusätzliche Informationen: | Conference Proceedings mit Passwort zum herunterladen | ||||||||||||||||||||
Titel: | Applications of Multi-Pulse Shake-The-Box 3D Lagrangian Particle Tracking to single- and multi-exposed recordings | ||||||||||||||||||||
Autoren: |
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Datum: | 2018 | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Seitenbereich: | Seiten 42-45 | ||||||||||||||||||||
Name der Reihe: | Conference Proceedings online /book of abstracts online | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | Lagrangian, 3D particle tracking, multi-pulse, Shake-The-Box, boundary layers | ||||||||||||||||||||
Veranstaltungstitel: | 18th International Symposium on Flow Visualization | ||||||||||||||||||||
Veranstaltungsort: | Zurich, Switzerland | ||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
Veranstaltungsbeginn: | 26 Juni 2018 | ||||||||||||||||||||
Veranstaltungsende: | 29 Juni 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 - VicToria (alt) | ||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO | ||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||
Hinterlegt am: | 16 Jul 2018 14:13 | ||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:25 |
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