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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.5

ISSN Print: 1065-3090
ISSN Online: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v11.i3.50
16 pages

3D FLOW INVESTIGATIONS BY RAINBOW VOLUMIC VELOCIMETRY (RVV): RECENT PROGRESS

D. Zibret
Department CREST, Institute FEMTO-ST UMR CNRS 6174, 2 Av. J. Moulin, 90000 Belfort, FRANCE
Yannick Bailly
FEMTO-ST Institute, Univ. Bourgogne Franche-Comté, CNRS, Belfort, France
Jean-Pierre Prenel
University of Franche Comte/CNRS 6174, Belfort, France
R. Malfara
Department CREST, Institute FEMTO-ST UMR CNRS 6174, 2 Av. J. Moulin, 90000 Belfort, FRANCE
C. Cudel
Laboratoire MIPS/Lab.El Université de Haute Alsace, France

ABSTRACT

This paper presents the last development of an original optical method intended for experimental investigations of 3D flows: the Rainbow Volumic Velocimetry (RVV). In this technique, the flow is seeded with tracers which positions are recorded by a 3CCD camera connected to a frame grabber. Instead of being lightened in a plan (classical tomography), the flow is lightened in a volume with a continuous spectrum illumination in order to introduce additional information in images. Thereby multicolored images are recorded. The first two spatial coordinates of a tracer are obtained like in classical PTV and the third coordinate is determined thanks to a wavelength coding, the tracer color being directly connected to its depth position.


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