Squeeze flow of interstitial Herschel-Bulkley fluid between two rigid spheres

Interaction between two spheres with an interstitial fluid is crucial in discrete element modeling for simulating the behaviors of ＇wet＇ particulate materials. The normal viscous force of squeeze flow between two arbitrary rigid spheres with an interstitial HerscheI-Bulkley fluid was studied on the...

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Bibliographic Details
Published in:Particuology 2010-08, Vol.8 (4), p.360-364
Main Authors: Xu, Chunhui, Yuan, Li, Xu, Yong, Hang, Wenbin
Format: Article
Language:English
Subjects:
Bingham流体
Computational fluid dynamics
Computer simulation
Discrete element method
Fluid flow
Fluids
Herschel–Bulkley fluid
Interstitials
Lubrication
Mathematical analysis
Shear stress
Viscous force
Wet granule
挤压流动
模型模拟
相互作用
积分表达式
赫歇尔
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Summary:Interaction between two spheres with an interstitial fluid is crucial in discrete element modeling for simulating the behaviors of ＇wet＇ particulate materials. The normal viscous force of squeeze flow between two arbitrary rigid spheres with an interstitial HerscheI-Bulkley fluid was studied on the basis of Reynolds＇ lubrication theory, resulting in analytical integral expressions of pressure distribution and the viscous force between the two spheres. According to the variation of shear stress, the fluid was divided into yielding and unyielding regions, followed by a discussion on the thickness of the two regions. The result of this paper could be reduced to either the power-law fluid or the Bingham fluid case.
ISSN:1674-2001
1672-2515
2210-4291
DOI:10.1016/j.partic.2009.07.008