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Numerical simulation of convective heat transfer in packed bed using open-source computational fluid dynamics. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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Kou M, Zeng W, Zhang Z, She X, Zhang T, Zhao B, Ma X, Zhou H. Central coke charging and its effect on coke collapse at the throat of blast furnace by DEM simulation. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Arifuzzaman S, Dong K, Zhu H, Zeng Q. DEM study and machine learning model of particle percolation under vibration. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103551] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Guo L, Zhong W, Zhou Z. Preface for the virtual special issue: Computational particle technology. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2021.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhou H, Tian X, Guo X, Kou M, Wu S, Shen Y, You Y. DEM study of the angle of repose and porosity distribution of cylindrical particles with different lengths. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2021-0174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Effect of the length of cylindrical particle on repose angle and porosity of a pile was numerically studied using discrete element method. The variation of repose angle and porosity with coefficient of sliding and rolling friction were also discussed. The results shown that compared with sphere particle, the bottom size of cylindrical pile is smaller, while the height of cylinder pile is larger and the heap is steeper. With the increase of the length of cylinder, the contour line of the pile becomes steep, and the angle of repose increases. The repose angle shows a positive correlation with coefficient of sliding and rolling friction. The porosity increases with the increase of the length of cylinders. The trends of porosity are basically consist with that of repose angle, and with increase of friction coefficient, the average porosity increases.
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Affiliation(s)
- Heng Zhou
- State Key Laboratory of Advanced Metallurgy , School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing , Beijing , 100083 , China
| | - Xu Tian
- State Key Laboratory of Advanced Metallurgy , School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing , Beijing , 100083 , China
| | - Xingyu Guo
- State Key Laboratory of Advanced Metallurgy , School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing , Beijing , 100083 , China
| | - Mingyin Kou
- State Key Laboratory of Advanced Metallurgy , School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing , Beijing , 100083 , China
| | - Shengli Wu
- State Key Laboratory of Advanced Metallurgy , School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing , Beijing , 100083 , China
| | - Yansong Shen
- School of Chemical Engineering, University of New South Wales , Sydney , NSW , 2052 , Australia
| | - Yang You
- College of materials Science and Engineering, Chongqing University , Shapingba District , Chongqing , 400044 , China
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Numerical simulation of coke collapse and its optimization during burden charging at the top of bell-less blast furnace. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang Z, Liu Y, Zheng B, Sun P, Li R. Local Percolation of a Binary Particle Mixture in a Rectangular Hopper with Inclined Bottom during Discharging. ACS OMEGA 2020; 5:20773-20783. [PMID: 32875211 PMCID: PMC7450507 DOI: 10.1021/acsomega.0c01514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
To reveal the local percolation characteristics of a binary particle mixture in a rectangular hopper with inclined bottom, the discrete element method (DEM) is used to simulate the discharging process. A local percolation evaluation method is proposed, and the percolation strength grid maps are drawn. The effects of geometric parameters, particle properties, and interaction parameters on percolation are investigated. Apart from the free surface, percolation is mainly concentrated near the wall and at the bottom. With the increase in the orifice width, the average local percolation strength index (ALPSI) of the near-wall region increases and that of the bottom region decreases. The effect of the angle on percolation in the near-wall region can be ignored. The effect of friction on local percolation is significant. Increasing the fine particle mass fraction and reducing the difference in particle size can effectively avoid percolation.
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Affiliation(s)
- Zhongliang Zhang
- School
of Energy and Power Engineering, University
of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yongqi Liu
- School
of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Bin Zheng
- School
of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Peng Sun
- School
of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Ruiyang Li
- School
of Energy and Power Engineering, University
of Shanghai for Science and Technology, Shanghai 200093, China
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