A 3D PTV Technique for Granular Medium in Liquids
by
Yves Brunet
Laboratoire de Mécanique de Lille, URA CNRS 1441, cité scientifique 59655 Villeneuve d'Ascq Cedex
Coauthors: V. Latard, A. Merlen

Optical methods or visualizations cannot be performed for granular flows because of the opacity of these materials. Hence, the efficient techniques developed for flows analysis cannot be adapted. This reduces the possibilities to expensive magnetic or radioactive tracking methods or X-rays visualizations. In this paper an optical particle tracking velocimetry is presented for a mixture of oil and glass beads by matching the index refraction of both materials. Lagrangian observations of single colored particle as well as Eulerian statistical fluxes are then possible.

The technique is applied on a sedimentation flow in a squared section vertical tunnel.

Date received: January 21, 1999

Copyright © 1999 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cacp-05.