GENERALIZATION OF THE FOSCOLO - GIBILARO ANALYSIS OF DYNAMIC WAVES by Daniel
نویسنده
چکیده
This note reports an attempt to obtain the particle phase pressure in the Foscolo-Gibilaro [2] one-dimensional, particle in a fluidized bed model, from a constitutive hypothesis which appears to be implied by their work. Our hypothesis leads to their expression plus another term which is proportional to the space derivative of the particle velocity. We think of this term as representing a change in the microstructure, the positions of the particles relative to one another. This term is also missing from the one-dimensional equations which were recently derived by G.K. Batchelor [1]. When the new term is added we find that the state of uniform fluidization is always unstable.
منابع مشابه
Mass-transfer enhancement factors for reversible gas-liquid reactions: comparison of DeCoursey’s and Onda’s methods
REFERENCES Wallis G. B., One-Dimensional Two-Phase Flow. McGraw-Hill, New York 1969. Foscolo P. U. and Gibilaro L. G., Chem. Engng Sci. 1984 39 1667. Gibilaro L. G., Di Felice R., Waldram S. P. and Foscolo P. Il., Chem. Engng Sci. 1985 4
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