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Applications of Multi-Pulse Shake-The-Box 3D Lagrangian Particle Tracking to single- and multi-exposed recordings

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, 26.-29. June 2018, 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/
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:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Novara, Matteomatteo.novara (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Schanz, Danieldaniel.schanz (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Geisler, Reinhardreinhard.geisler (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Schröder, Andreasandreas.schroeder (at) dlr.dehttps://orcid.org/0000-0002-6971-9262NICHT SPEZIFIZIERT
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
Veranstaltungsdatum:26.-29. June 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:25 Sep 2019 11:58

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