首页|DEM analysis of the influence of stirrer design on die filling with forced powder feeding

DEM analysis of the influence of stirrer design on die filling with forced powder feeding

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Die filling is a critical stage during powder compaction,which can significantly affect the product quality and efficiency.In this paper,a forced feeder is introduced attempting to improve the filling performance of a lab-scale die filling system.The die filling process is analysed with a graphics processing units(GPU)enhanced discrete element method(DEM).Various stirrer designs are assessed for a wide range of process settings(i.e.,stirrer speed,filling speed)to explore their influence on the die filling performance of free-flowing powder.Numerical results show that die filing with the novel helical-ribbon(i.e.,type D)stirrer design exhibits the highest filling ratio,implying that it is the most robust stirrer design for the feeder configuration considered.Furthermore,die filling performance with the type D stirrer design is a function of the stirrer speed and the filling speed.A positive variation of filling ratio(ηf＞0％)can be ensured over the whole range of filling speed by adjusting the stirrer speed(i.e.,increasing the stirrer speed).The approach used in this study can not only help understand how the stirrer design affects the die filling performance but also guide the optimization of feeder system and process settings.

Discrete element methodDie fillingForced feedingStirrer designGPU computing

Chao Zheng、Edward Yost、Ariel R.Muliadi、Nicolin Govender、Ling Zhang、Chuan-Yu Wu

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School of Chemistry and Chemical Engineering,University of Surrey,Guildford,GU2 7XH,United Kingdom

Small Molecule Pharmaceutics,Genentech,Inc.,One DNA Way,South San Francisco,CA,94080,USA

Genentech Ltd.,the Engineering and Physical Science Research CouncilMarie Sk?odowska-Curie Individual Fellowships under European Union's Horizon 2020 research and innovation programme

EP/M02976X840264

2024

10.1016/j.partic.2023.08.018

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.88(5)
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