Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position

doi:10.1088/1674-1056/27/12/124704

中国物理B ›› 2018, Vol. 27 ›› Issue (12): 124704-124704.doi: 10.1088/1674-1056/27/12/124704

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position

Tingwei Wang(王廷伟), Xin Li(李鑫), Qianqian Wu(武倩倩), Tengfei Jiao(矫滕菲), Xingyi Liu(刘行易), Min Sun(孙敏), Fenglan Hu(胡凤兰), Decai Huang(黄德财)

Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China

收稿日期:2018-07-25 修回日期:2018-09-19 出版日期:2018-12-05 发布日期:2018-12-05
通讯作者: Decai Huang E-mail:hdc@njust.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11574153).

Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position

Tingwei Wang(王廷伟), Xin Li(李鑫), Qianqian Wu(武倩倩), Tengfei Jiao(矫滕菲), Xingyi Liu(刘行易), Min Sun(孙敏), Fenglan Hu(胡凤兰), Decai Huang(黄德财)

Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China

Received:2018-07-25 Revised:2018-09-19 Online:2018-12-05 Published:2018-12-05
Contact: Decai Huang E-mail:hdc@njust.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11574153).

摘要/Abstract

摘要：

Molecular dynamics simulations have been performed to elucidate the influence of exit position on a dense granular flow in a two-dimensional channel. The results show that the dense flow rate remains constant when the exit is far from the channel wall and increases exponentially when the exit moves close to the lateral position. Beverloo's law proves to be successful in describing the relation between the dense flow rate and the exit size for both the center and the lateral exits. Further simulated results confirm the existence of arch-like structure of contact force above the exit. The effective exit size is enlarged when the exit moves from the center to the lateral position. As compared with the granular flow of the center exit, both the vertical velocities of the grains and the flow rate increase for the lateral exit.

关键词: granular materials, dense granular flow, molecular dynamics simulations

Abstract:

Key words: granular materials, dense granular flow, molecular dynamics simulations

中图分类号: (Granular flow)

47.57.Gc

45.70.Mg (Granular flow: mixing, segregation and stratification) 75.40.Mg (Numerical simulation studies)

王廷伟, 李鑫, 武倩倩, 矫滕菲, 刘行易, 孙敏, 胡凤兰, 黄德财. Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position[J]. 中国物理B, 2018, 27(12): 124704-124704.

Tingwei Wang(王廷伟), Xin Li(李鑫), Qianqian Wu(武倩倩), Tengfei Jiao(矫滕菲), Xingyi Liu(刘行易), Min Sun(孙敏), Fenglan Hu(胡凤兰), Decai Huang(黄德财). Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position[J]. Chin. Phys. B, 2018, 27(12): 124704-124704.

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Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position

Numerical simulations of dense granular flow in a two-dimensional channel:The role of exit position

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