Experimental characterization of the chaotic dynamics of cohesionless particles: application to a V-blender |
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Authors: | J Doucet F Bertrand J Chaouki |
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Affiliation: | (1) Department of Chemical Engineering, école Polytechnique de Montreal, P.O. Box 6079, Station Centre-Ville, Montreal, QC, Canada, H3C 3A7 |
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Abstract: | So far, most of the investigations of the dynamics of granular material in blenders have been done in 2D tumblers due to the
current lack of accurate measurement methods for the investigation of complex 3D flows. However, recent advances in the field
of non-intrusive methods have paved the way to the characterization of the chaotic dynamics in 3D blenders. This work aims
to present such an analysis in the case of a V-blender using radioactive particle tracking (RPT). Special attention is given
to the chaotic properties of mixing by performing a time-series analysis of the position of a single tracer in motion in this
blender. An original investigation of the mixing properties is also presented. More generally, this work shows that the mixing
properties of a blender can be characterized by using tools of dynamical systems theory through a time-series analysis of
data obtained from non-intrusive measurements. |
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Keywords: | Radioactive particle tracking Chaos Dynamical systems Granular mixing |
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