Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method

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• 作者：Fenglei Qi ^{fqi@iastate.edu} ; Theodore J. Heindel ^{theindel@iastate.edu} ; Mark Mba Wright ; ^{markmw@iastate.edu}
• 关键词：Discrete element method ; Double screw mixer ; Mixing index ; Multicomponent mixture ; Particle mixing
• 刊名：Powder Technology
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：308
• 期：Complete
• 页码：334-345
• 全文大小：3265 K
• 卷排序：308

文摘

DEM is capable of predicting the granular flow in the double screw mixer. Particle mixing time approaches to the residence time in the plug flow reactor. Particle mixing in the mixer shows a mixing-demixing-mixing oscillation pattern. Screw rotation speed does not affect particle mixing significantly. Increasing pitch length and reducing solid feed rate decrease mixing performance.