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NMR Imaging of Industrial Flow Processes

Published online by Cambridge University Press:  21 February 2011

S. W. Sinton ,
J. H. Iwamiya  and
A. W. Chow
S. W. Sinton
Affiliation:
Lockheed Palo Alto Research Laboratory, 3251 Hanover St., Palo Alto, CA 94304
J. H. Iwamiya
Affiliation:
Lockheed Palo Alto Research Laboratory, 3251 Hanover St., Palo Alto, CA 94304
A. W. Chow
Affiliation:
Lockheed Palo Alto Research Laboratory, 3251 Hanover St., Palo Alto, CA 94304
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Abstract

The application of nuclear magnetic resonance flow imaging to the study of Poiseuille flows of solid/liquid suspensions is described. The basic imaging method is presented along with results on suspensions with solid particle loading levels up to 52 vol. % and viscosities up to 7kPoise. The most concentrated suspensions are non-Newtonian, and the NMR flow data show evidence for deviations from a simple parabolic velocity profile in straight pipes. Cross-sectional intensity images derived from the flow image data on concentrated suspensions are non-uniform. Possible explanations for these results are discussed in terms of current rheological understanding of suspension flow and relaxation weighting phenomena in the NMR imaging experiments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 217: Symposium U – Advanced Tomographic Imaging Methods for the Analysis of Materials , 1990 , 73
Copyright
Copyright © Materials Research Society 1991

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References

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