无量纲量
机械
粘性液体
工作(物理)
粒子(生态学)
组分(热力学)
经典力学
物理
材料科学
热力学
地质学
海洋学
作者
Kimiaki Washino,Ei L. Chan,Taku Matsumoto,Seiji Hashino,Tomohiro Tsuji,Toshitsugu Tanaka
标识
DOI:10.1016/j.jcis.2017.01.088
摘要
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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