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Analytical and experimental investigations of dual-plane PIV by correlating images of particles within parallel light sheet planes

Raffel, M. und Westerweel, J. und Willert, C. und Gharib, M. und Kompenhans, J. (1995) Analytical and experimental investigations of dual-plane PIV by correlating images of particles within parallel light sheet planes. In: SPIE International Symposium on Optical Science, Engineering and Instrumentation, Vol. 2546, Seiten 75-86. 5th Int. Symposium on 'Optical Diagnostics in Fluid and Thermal Flows', San Diego, 9-14 July 1995.

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Kurzfassung

In its "classical" form particle image velocimetry (PIV) extracts two components of the flow velocity vector by measuring the displacement of tracer particles within a double-pulsed laser light sheet. The method described in this paper is based on the additional recording of a third exposure of the tracer particles in a parallel light sheet, which isslightly displaced with respect to the first one. The particle images resulting from these three exposures are stored on separate frames. The locations of the correlation peaks, as obtained by cross-correlation methods, are used to determine the projections of the velocity vectors onto the plane between both light sheets. In the manner described below, the amplitudes of these peaks are used to obtain information about the velocity component perpendicular to the light sheet planes. The mathematical background of this method is described in the paper.Numerical simulations show the influence of the main parameters (e.g. light sheet thickness, light sheet displacement and out-of- plane component) on the resolution and reliability of the new method.Two different recording procedures and their results will be shown to demonstrate the ease of operation when applying this technique to liquid flows.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen: LIDO-Berichtsjahr=1995,
Titel:Analytical and experimental investigations of dual-plane PIV by correlating images of particles within parallel light sheet planes
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Raffel, M.NICHT SPEZIFIZIERT
Westerweel, J.Delft University of Technology
Willert, C.NICHT SPEZIFIZIERT
Gharib, M.CALTECH, Graduate Aeronautical Lab., Pasadena
Kompenhans, J.NICHT SPEZIFIZIERT
Datum:1995
Erschienen in:SPIE International Symposium on Optical Science, Engineering and Instrumentation
Band:Vol. 2546
Seitenbereich:Seiten 75-86
Name der Reihe:SPIE Proceedings, Article No. 2456-13
Status:veröffentlicht
Stichwörter:particle image velocimetry, dual-plane correlation, scanning light sheet, three-dimensional flow measurements
Veranstaltungstitel:5th Int. Symposium on 'Optical Diagnostics in Fluid and Thermal Flows', San Diego, 9-14 July 1995
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L SI - Versuchs- und Simulationstechniken
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: elib DLR-Beauftragter
Hinterlegt am:03 Apr 2006
Letzte Änderung:27 Apr 2009 10:08

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