Three-dimensional, three-component wall-PIV

This paper describes a new time-resolved three-dimensional, three-component (3D-3C) measurement technique called wall-PIV. It was developed to assess near wall flow fields and shear rates near non-planar surfaces. The method is based on light absorption according to Beer-Lambert’s law. The fluid con...

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Hauptverfasser: Berthe, André (VerfasserIn) , Kondermann, Daniel (VerfasserIn) , Christensen, Carolyn (VerfasserIn) , Goubergrits, Leonid (VerfasserIn) , Garbe, Christoph S. (VerfasserIn) , Affeld, Klaus (VerfasserIn) , Kertzscher, Ulrich R. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: June 2010
In: Experiments in fluids
Year: 2010, Jahrgang: 48, Heft: 6, Pages: 983-997
ISSN:1432-1114
DOI:10.1007/s00348-009-0777-4
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s00348-009-0777-4
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Verfasserangaben:André Berthe, Daniel Kondermann, Carolyn Christensen, Leonid Goubergrits, Christoph Garbe, Klaus Affeld, Ulrich Kertzscher
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Zusammenfassung:This paper describes a new time-resolved three-dimensional, three-component (3D-3C) measurement technique called wall-PIV. It was developed to assess near wall flow fields and shear rates near non-planar surfaces. The method is based on light absorption according to Beer-Lambert’s law. The fluid containing a molecular dye and seeded with buoyant particles is illuminated by a monochromatic, diffuse light. Due to the dye, the depth of view is limited to the near wall layer. The three-dimensional particle positions can be reconstructed by the intensities of the particle’s projection on an image sensor. The flow estimation is performed by a new algorithm, based on learned particle trajectories. Possible sources of measurement errors related to the wall-PIV technique are analyzed. The accuracy analysis was based on single particle experiments and a three-dimensional artificial data set simulating a rotating sphere.
Beschreibung:Gesehen am 23.01.2023
Beschreibung:Online Resource
ISSN:1432-1114
DOI:10.1007/s00348-009-0777-4