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- W2257962314 abstract "The penetration, dispersion and eventual coalescence of two pulses of monosized spherical solid particles dropped successively into an initially quiescent. fluid is examined numerically. Solid particle motion is modelled via a Eulerian Eulerian, multiphase, finite volume approach, within a cylindrical geometry. Flow of the solid and liquid phases is coupled numerically and inter-particle interactions are modelled using a solids pressure expression. The dispersion of single and double pulses of micron sized spherical particles were undertaken for comparison. In the case of two successive pulses of solids, the first pulse of solids is found to form a closed torus which is subsequently penetrated by the second pulse. Thereafter, the two pulses combine to form a larger closed torus which then expands slowly as it descends through the domain. It was found that the initial coalescence of the two pulses is solely due to the liquid velocity field created by the entry of the first pulse of solids, the entry of the second pulse simply serves to enhance t,hat field. The entry of a second pulse of solids provides additional momentum to the domain, enhancing the recirculation. It is found that after the initial coalescence of the successive pulses, the dispersive evolution of the closed torus and tail is very similar to that of a single pulse. These results are in good qualitative agreement with related experimental work. Transactions on Engineering Sciences vol 42, © 2003 WIT Press, www.witpress.com, ISSN 1743-3533" @default.
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- W2257962314 date "2003-10-14" @default.
- W2257962314 modified "2023-09-26" @default.
- W2257962314 title "Dispersion And Coalescence Of Two Pulses OfSpherical Solid Particles Dropped SuccessivelyInto An Initially Quiescent Liquid" @default.
- W2257962314 doi "https://doi.org/10.2495/mpf030091" @default.
- W2257962314 hasPublicationYear "2003" @default.
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