Huhn, Florian und Schröder, Andreas und Schanz, Daniel und Gesemann, Sebastian und Manovski, Peter (2018) Estimation of Time-Resolved 3D Pressure Fields in an Impinging Jet Flow from Dense Lagrangian Particle Tracking. In: 18th International Symposium on Flow Visualization 2018 (214m), Seiten 1-11. 18th International Symposium on Flow Visualization 2018, 2018-06-26 - 2018-06-29, Zurich, Switzerland.
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Offizielle URL: http://www.isfv18.ethz.ch/
Kurzfassung
Lagrangian particle tracking (LPT) using the Shake-The-Box (STB) method enables a dense and accurate 3D measurement of position, velocity and acceleration vectors of a large amount of single seeding tracers imaged by a multiple camera system. A subsequent application of the data assimilation technique “FlowFit” to the reconstructed particle tracks provides access to the full time resolved velocity gradient tensor together with the 3D pressure (gradient) fields. A perpendicular impinging jet flow with exit velocities at U = 1, 4 and 16 m/s and nozzle to plate spacing of H/D = 5 has been investigated using largevolume STB. Helium-filled soap bubbles are used as tracer particles which are illuminated with pulsed LED arrays. A large measurement volume has been covered (cloud of tracked particles in a volume of 54 liters, ∼ 190,000 particles). The reconstructed time-resolved 3D pressure fields have been validated against microphone recordings at the wall with high correlation coefficients up to R = 0.88. In this paper the experimental conditions are described together with the main processing parameters adopted for the STB strategy and the applied FlowFit data assimilation method. Results are shown in terms of instantaneous flow and pressure fields together with comparisons to time-traces of synchronously measured microphone signals.
elib-URL des Eintrags: | https://elib.dlr.de/119993/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||
Zusätzliche Informationen: | 1.2.3 im Book of Abstract | ||||||||||||||||||||||||
Titel: | Estimation of Time-Resolved 3D Pressure Fields in an Impinging Jet Flow from Dense Lagrangian Particle Tracking | ||||||||||||||||||||||||
Autoren: |
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Datum: | Juni 2018 | ||||||||||||||||||||||||
Erschienen in: | 18th International Symposium on Flow Visualization 2018 | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Seitenbereich: | Seiten 1-11 | ||||||||||||||||||||||||
Name der Reihe: | Conference Proceedings online, Book of Abstracts | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Unsteady 3D pressure, dense accelerometry, data assimilation, flow visualization, turbulent impinging jet flow | ||||||||||||||||||||||||
Veranstaltungstitel: | 18th International Symposium on Flow Visualization 2018 | ||||||||||||||||||||||||
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 - Simulation und Validierung (alt) | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO | ||||||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||
Hinterlegt am: | 04 Dez 2018 16:08 | ||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:24 |
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