Journal
COMPTES RENDUS CHIMIE
Volume 7, Issue 3-4, Pages 275-282Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2003.11.007
Keywords
proton MRI; velocimetry; rheometry; fluid mechanics; Couette cell
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Two recent developments using proton MRI velocimetry are reported, that concern both fields of rheology and of fluid mechanics. The first one is a way to get noticeable improvement in the signal-to-noise ratio during velocity measurements in a large-size 'Couette' rheometer. It opens a route to improve the study of complex or thixotrope fluids. The second one deals with the introduction of a model of concrete mixer inside the MRI facility. Thanks to synchronisation between movements of the model and MRI sequences, 3D velocity maps were obtained for a viscoplastic fluid inside the mixer. (C) 2004 Academie des sciences. Publie par Elsevier SAS. Tous droits reserves.
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