Simultaneous 3D location and size measurement of bubbles and sand particles in a flow using interferometric particle imaging

We present a system to characterize a triphasic flow in a 3D volume (air bubbles and solid irregular particles in water) using only one CCD sensor. A cylindrical interferometric out-of-focus imaging setup is used to determine simultaneously the 3D position and the size of bubbles and irregular sand...

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Bibliographic Details
Published in:Applied optics (2004) 2015-09, Vol.54 (25), p.7773-7780
Main Authors: Ouldarbi, L, Pérret, G, Lemaitre, P, Porcheron, E, Coëtmellec, S, Gréhan, G, Lebrun, D, Brunel, M
Format: Article
Language:English
Subjects:
Air bubbles
Bubbles
Engineering Sciences
Imaging
Interference fringes
Interferometry
Optics
Photonic
Sand
Simulation
Three dimensional
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Description
Summary:We present a system to characterize a triphasic flow in a 3D volume (air bubbles and solid irregular particles in water) using only one CCD sensor. A cylindrical interferometric out-of-focus imaging setup is used to determine simultaneously the 3D position and the size of bubbles and irregular sand particles in a flow. The 3D position of the particles is deduced from the ellipticity of their out-of-focus image. The size of bubbles is deduced from analysis of interference fringes. The characteristics of irregular sand particles are obtained from analysis of their speckle-like pattern. Experiments are confirmed by simulations.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.54.007773