Magnetic resonance characterization of coupled gas and particle dynamics in a bubbling fluidized bed
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Peer-reviewed
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Abstract
Relative flow between granular material and gas can create phenomena in which particles behave like a liquid with bubbles rising through them. In this paper, magnetic resonance imaging is used to measure the velocities of the gas and solid phases in a bubbling fluidized bed. Comparison with theory shows that the average velocity of gas through the interstices between particles is predicted correctly by classic analytical theory. Experiments were also used to validate predictions from computer simulations of gas and solid motion. The experiments show a wide distribution of gas velocities in both bubbling and emulsion regions, providing a different direction for computational and analytical theory.
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4004 Chemical Engineering, 40 Engineering
Journal Title
Physical Review Fluids
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Journal ISSN
2469-990X
2469-990X
2469-990X
Volume Title
1
Publisher
American Physical Society
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Engineering and Physical Sciences Research Council (EP/K008218/1)
C.M.B. acknowledges financial support from the Gates Cambridge Trust and Syncrude Canada Ltd.