Simulation of solid-liquid flows using a two-way coupled smoothed particle hydrodynamics-discrete element method model

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• 作者：Jihoe Kwon ; Heechan Cho
• 关键词：Solid ; liquid Flow ; SPH ; DEM ; Particle ; laden Flow ; Particle Method
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：33
• 期：10
• 页码：2830-2841
• 全文大小：1,074 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220
• 卷排序：33

文摘

We introduce a coupled smoothed particle hydrodynamics-discrete element method (SPH-DEM) to describe the two-way interaction between the two phases of a solid-liquid flow. To validate the model, we simulated two test problems: a solid-liquid counter-flow in a periodic box and particle settlement. The simulations correctly predicted the dynamics, and the results showed good agreement with the theory. The developed model was then applied to simulate the slurry coagulation process to examine the coagulation efficiency. When the rotational speed exceeded the normal range, the coagulation rate decreased with time, even though the rate was high during the early stage due to the size separation effect of the particles. Given this result, overly fast stirring appears to have an adverse effect on the coagulation efficiency. The model is applicable to the design of various types of solid-liquid flows.