[1] Wu Li, Huang Peng, Fu Shuaiqi,. Particles segregation in rotating drumbased on discrete element method [J]. Journal of Southeast University (English Edition), 2017, 33 (4): 391-397. [doi:10.3969/j.issn.1003-7985.2017.04.002]
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Particles segregation in rotating drumbased on discrete element method(
)
基于离散元素法的滚筒内颗粒物质分层现象
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 33
- Issue:
- 2017 4
- Page:
- 391-397
- Research Field:
- Mechanical Engineering
- Publishing date:
- 2017-12-30
Info
- Title:
- Particles segregation in rotating drumbased on discrete element method
- 基于离散元素法的滚筒内颗粒物质分层现象
- Author(s):
- Wu Li, Huang Peng, Fu Shuaiqi
- School of Mechanical Engineering, Southeast University, Nanjing 211189, China
- PACS:
- TB24
- DOI:
- 10.3969/j.issn.1003-7985.2017.04.002
- Abstract:
- In order to study particle segregation in the rotating drum, the movement of particles is studied by theoretical deduction and numerical simulation. According to the theoretical deduction, particles near the end wall are lifted higher by the friction of the end wall, which leads to small particles gathering in the middle of the drum. The model of particle motion is established based on the discrete element method. It can be shown from the simulation results that the particles accumulated higher near the end wall, which is consistent with the theoretical deduction. In addition, the effects from the aspects of the relative friction between particles, the friction between the end wall and particle, the drum aspect ratio and the rotation speed were explored by the simulation. From the simulation results, it can be pointed out that the friction of the end wall has a decisive influence on the axial segregation of the particles, and the other factors merely affect the accumulate forms of particles.
- 为了研究颗粒物质在旋转滚筒中出现的分层现象, 从理论推导和数值模拟2个方面对颗粒物质的运动进行了研究.理论推导指出端盖的摩擦会使得靠近端盖处颗粒提升高度变高, 由此引起小颗粒在滚筒中部聚集, 出现颗粒分层现象.基于离散元素法建立了颗粒在滚筒中运动的模型, 当端盖摩擦较大时, 颗粒在端盖处堆积较高, 并且在滚筒中部出现小颗粒聚集, 与理论推导结果相符.此外, 模拟实验从颗粒间的相对摩擦大小、端盖对颗粒摩擦大小、滚筒长径比以及滚筒转速等几个方面研究了颗粒分层的情况.模拟实验结果表明:端盖的摩擦对颗粒轴向分层有决定性影响, 其余因素只会对颗粒的聚集形态产生影响.
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Memo
- Memo:
-
Biographies: Wu Li(1992—), male, graduated; Huang Peng(corresponding author), male, doctor, associate professor, huangpeng@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.51775109), Jiangsu Science and Technology Support Plan Project(No.BE2014142).
Citation: Wu Li, Huang Peng, Fu Shuaiqi.Particles segregation in rotating drum based on discrete element method[J].Journal of Southeast University(English Edition), 2017, 33(4):391-397.DOI:10.3969/j.issn.1003-7985.2017.04.002.