Direct numerical simulation of a particle attachment to an immersed bubble

A numerical extension of the “smooth profile method” is presently suggested to simulate the attachment of a colloidal particle to the surface of an immersed bubble. In this approach, the two fluid-particle boundaries and the fluidic boundary are replaced with diffuse interfaces. The method is tested...

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Bibliographic Details
Published inPhysics of fluids (1994) Vol. 28; no. 8
Main Authors Lecrivain, Gregory, Yamamoto, Ryoichi, Hampel, Uwe, Taniguchi, Takashi
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.08.2016
Subjects
Attachment
Bubbles
Collision dynamics
Computer simulation
Direct numerical simulation
Flotation
Fluid dynamics
Physics
Profile method (forecasting)
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Summary:A numerical extension of the “smooth profile method” is presently suggested to simulate the attachment of a colloidal particle to the surface of an immersed bubble. In this approach, the two fluid-particle boundaries and the fluidic boundary are replaced with diffuse interfaces. The method is tested under various capillary numbers. Upon attachment to a stable bubble, it is found that the method is capable of reproducing the three microprocesses associated with the particle attachment. The change in the trajectory as the particle approaches the fluidic interface, the collision process, and the sliding down the bubble surface are all captured. Potential application of the present method shows great promise in the field of froth flotation, where the capture of hydrophobic particles by rising bubbles is of primary importance.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.4960627