Settling of particles in liquids

K. J. Dong, R. P. Zou, R. Y. Yang, A. B. Yu

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

This paper presents DEM modeling of the setting of particles in liquids under conditions similar to sedimentation/filtration process. The liquid flow is supposed to be one-dimensional, and the motion of particles is three-dimensional. Various forces are incorporated in determining the motion of the particles, including the particle-particle interaction forces due to collision and the van der Waals attraction, and the particle-fluid interactions such as buoyancy, drag and lift forces. The model is validated by comparing the simulation and experiment results. The packing structures are analyzed in terms of porosity, radial distribution function and coordination number. The effects of key variables such as particle size, Hamaker constant, fluid density and viscosity are examined through a series of controlled numerical experiments. The roles of various forces related to these variables are also discussed.

Original languageEnglish
Title of host publicationPowders Grains - Proc. Int. Conf. Micromechanics Granular Media
Pages1055-1059
Number of pages5
Publication statusPublished - 1 Dec 2005
Externally publishedYes
Event5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005 - Stuttgart, Germany
Duration: 18 Jul 200522 Jul 2005

Publication series

NamePowders and Grains 2005 - Proceedings of the 5th International Conference on Micromechanics of Granular Media
Volume2

Conference

Conference5th International Conference on the Micromechanics of Granular Media: Powders and Grains 2005
CountryGermany
CityStuttgart
Period18/07/0522/07/05

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