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NMR Imaging of Industrial Flow Processes

  • S. W. Sinton (a1), J. H. Iwamiya (a1) and A. W. Chow (a1)

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.

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1. Sinton, S. W., Crowley, J. C., Lo, G. A., Kalyon, D. M., and Jacob, C., ”Nuclear Magnetic Resonance Imaging Studies of Mixing in a Twin-Screw Extruder”, Proceedings of Soc. Plastic Eng./ANTEC Conf., Dallas, 1990. pp. 116–119.
2. Xia, Y. and Callaghan, P. T., Makromol. Chem., Macromol. Symp..34, 277 (1990).
3. Sinton, S. W. and Chow, A. W., ”NMR Flow Imaging of Fluids and Solid Suspensions in Poiseuille Flow” submitted to Rheology, J. and presented at the Soc. of Rheology Meeting, Santa Fe, October, 1990.
4. A.Altobelli, S., Majors, P. D., Fukushima, E., and Givler, R. C.NMR Measurement of Fluid Concentration in Two-Phase Flows.presented at the Soc. of Rheology Meeting, Santa Fe, October, 1990.
5. Kose, K., Satoh, K., Inouye, T., and Yasuoka, H., J. Phys. Soc. Japan 54, 81 (1985).
6. D.Majors, P., Givler, R. C., and Fukushima, E., J. Magn. Reson. 85, 235 (1989).
7. Glasel, J. A. and Lee, K. H., J. Amer. Chem. Soc. 96, 970 (1974).
8. Fung, B. M. and McGaughy, T. W., J. Magn. Reson. 43, 316 (1981).
9. Leighton, D., ”Migration Arising from Gradients in Shear Stress: Particle Distributions in Poiseuille Flow”, NASA Conf. Publ. #3006, Mixing and Demixing Processes in Multiphase Flows with Applications to Propulsion Systems, Marshall Space Flight Center, Alabama, 1988.
10. Leighton, D. and Acrivos, A., J. Fluid Mech. 181, 415 (1987).
11. Nakatani, A. I., Poliks, M. D., and Samulski, E. T., Macromolecules, 23, 2686 (1990).

NMR Imaging of Industrial Flow Processes

  • S. W. Sinton (a1), J. H. Iwamiya (a1) and A. W. Chow (a1)

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