Viscous forces between two spheres colliding through interstitial power-law fluid--颗粒学报PARTICUOLOGY

Xu, Y., Li, H., & Huang, W. (2005). Viscous forces between two spheres colliding through interstitial power-law fluid. China Particuology, 3(1), 52-57. https://doi.org/10.1016/S1672-2515(07)60164-X

Viscous forces between two spheres colliding through interstitial power-law fluid

Yong Xu ^a *, Hongyan Li ^b, Wenbin Huang ^a

a Department of Applied Mechanics, China Agricultural University, Beijing 100083, P. R. China
b Department of Transport Engineering, Shandong University of Technology, Zibo 255049, P. R. China

10.1016/S1672-2515(07)60164-X

Volume 3, Issues 1–2, April 2005, Pages 52-57

Received 21 February 2005, Accepted 17 March 2005, Available online 14 December 2007.

E-mail: xuyong@cau.edu.cn

Highlights

Abstract

Interaction between two spheres with an interstitial fluid is essential in Discrete Element modeling for simulating the behaviors of ‘wet’ particulate materials. In this paper the interaction between two spheres with an interstitial Power-law fluid was approximately resolved as normal and tangential interactive models respectively, for which the governing equations were simplified on the basis of Reynolds approximation. These equations were then solved analytically together with the boundary conditions to obtain the pressure distributions for each individual model, and eventually solutions of the viscous squeeze force and the tangential viscous resistance were obtained, which provide a set of solutions for implementing into DEM code or other purposes.

Graphical abstract

Keywords

wet granulel Discrete Element Method; Power-law fluid; viscous force

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