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多相流动科学与技术
SJR: 0.183 SNIP: 0.483 CiteScore™: 0.5

ISSN 打印: 0276-1459
ISSN 在线: 1943-6181

多相流动科学与技术

DOI: 10.1615/MultScienTechn.v15.i1-4.130
pages 157-171

PARAMETERIZATION OF FORCE ON A PARTICLE/BUBBLE/DROPLET

S. Balachandar
Department of Theoretical and Applied Mechanics, University of Illinois, Urbana, IL 61801, USA

ABSTRACT

This contribution explores the nature and prediction of the forces on dispersed phase elements (particles, bubbles, droplets) in dispersed two-phase flows. The difficulties in parameterization of the force on a sphere embedded in a shear or straining flow at finite Reynolds number are illustrated by considering several examples (contaminated bubble in a vortex, particle moving at an angle through a straining ambient flow, particle moving freely in a shear flow). The challenges in prediction of the respective forces are reviewed and the significance of temporal acceleration and spatial variation in the flow explored.


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