Abstract
The velocity profiles of non-Newtonian fluids have been measured in a tube rheometer using magnetic resonance imaging (MRI). This experimental method of flow visualization is a non-invasive and non-destructive means to characterize flow behavior. The fluids examined in this paper are carboxymethylcellulose solution (CMC) and tomato juice. The velocity profiles obtained experimentally for the CMC solution by MRI were in good agreement with the analytical predictions. Velocity profiles obtained by imaging for tomato juice showed much greater dispersion of velocity than expected in the laminar flow regime
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