Normal viscous force of pendular liquid bridge between two relatively moving particles

[Display omitted] In this work, Direct Numerical Simulations (DNS) of a pendular liquid bridge formed between two relatively moving particles are performed to evaluate the normal component of the viscous force exerted on the particles. The viscous force obtained are non-dimensionalised in order to c...

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Published inJournal of colloid and interface science Vol. 494; pp. 255 - 265
Main Authors Washino, Kimiaki, Chan, Ei L., Matsumoto, Taku, Hashino, Seiji, Tsuji, Takuya, Tanaka, Toshitsugu
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 15.05.2017
Subjects
DEM
DNS
Normal viscous force
Pendular liquid bridge
Normal viscous force
DNS
Pendular liquid bridge
DEM
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Summary:[Display omitted] In this work, Direct Numerical Simulations (DNS) of a pendular liquid bridge formed between two relatively moving particles are performed to evaluate the normal component of the viscous force exerted on the particles. The viscous force obtained are non-dimensionalised in order to clarify the parameters which can affect the dimensionless force. The DNS results are compared with the viscous force models in literature which are commonly used in DEM simulations. It is found that these models cannot be used with large inter-particle separation distance. A new and more accurate viscous force model is proposed from the DNS results which can be directly implemented in the DEM framework.
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content type line 23
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2017.01.088