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颗粒分层过程三维离散元法模拟研究

赵啦啦 刘初升 闫俊霞 徐志鹏

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颗粒分层过程三维离散元法模拟研究

赵啦啦, 刘初升, 闫俊霞, 徐志鹏

Numerical simulation on segregation process of particles using 3D discrete element method

Zhao La-La, Liu Chu-Sheng, Yan Jun-Xia, Xu Zhi-Peng
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  • 采用软球干接触模型对球形及非球形颗粒的分层过程进行了三维离散元法模拟研究,从颗粒间作用力、转动力矩和能量变化的角度分析了颗粒分层机理,讨论了颗粒的粒度比对分层速度的影响规律.结果表明,分层过程中,大颗粒比小颗粒活跃,非球颗粒由于具有较高的动能而比球颗粒活跃,在一定程度上弥补了颗粒形状对分层过程的影响.大颗粒间的平均法向、切向作用力、平均力矩及平均动能均大于小颗粒.颗粒分层速度随着粒度比的增加而显著增大,当粒度比大于临界粒度比3时,分层速度的增幅减缓.
    Basing on dry contact model of soft spheres the segregation processes of spherical and non-spherical particles were simulated using threes-dimensional discrete element methods(DEM). Particle segregation mechanism was analyzed in view of force, torque and energy conversion between particles. Influence of segregation speed affected by particle size ratio was also discussed. The result shows that large particles are more active than small ones in segregation process, and non-spherical particles have higher energy, which makes up the influence of particle shape to segregation process to some extent, are more active than spherical particles. Average normal force, tangential force between large particles, their torque and kinetic energy are all greater than those of small particles. Particle segregation speed increases significantly with the increasing of size ratio. When the size ratio is greater than the critical value 3, the amplitude of increase in segregation speed will be slowed down.
    • 基金项目: 国家自然科学基金(批准号:50574091,50774084),江苏省“333工程”科研基金和煤炭加工与高效洁净利用教育部重点实验室开放基金(批准号:CPEUKF 08-02)资助的课题.
    [1]

    [1]Jiang Z H, Wang Y Y, Wu J 2006 Acta Phys. Sin. 55 4748 (in Chinese)[姜泽辉、王运鹰、吴晶 2006 物理学报 55 4748]

    [2]

    [2]Liang X W, Li L S, Hou Z G, Lü Z, Yang L, Sun G, Shi Q F 2008 Acta Phys. Sin.57 2300 (in Chinese)[梁宣文、李粮生、侯兆国、吕震、杨雷、孙刚、史庆藩 2008 物理学报 57 2300]

    [3]

    [3]Zhao Y M, Zhang S G, Jiao H G, Tie Z X 2006 J. China Univ. of Mining & Tech.35 586 (in Chinese)[赵跃民、张曙光、焦红光、铁占续 2006 中国矿业大学学报 35 586]

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    [4]Jiao H G, Zhao Y M, Wang Q Q 2006 J. China Univ. of Mining & Tech. (English Edition) 16 137

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    [5]Yin S R 1999 Ph. D. Dissertation (Xuzhou: China University of Mining &Technology) (in Chinese)[尹守仁 1999博士学位论文 (徐州:中国矿业大学)]

    [6]

    [6]Xu Y, Shun Q C, Zhang L, Huang W B 2003 Advances in Mechanics 33 251 (in Chinese)[徐泳、孙其诚、张凌、黄文彬 2003 力学进展 33 251]

    [7]

    [7]Zhu H P, Zhou Z Y, Yang R Y, Yu A B 2007 Chemical Engineering Science 62 3378

    [8]

    [8]Zhu H P, Zhou Z Y, Yang R Y, Yu A B 2008 Chemical Engineering Science 63 5728

    [9]

    [9]Cleary P W 2008 Powder Technology 179 144

    [10]

    ]Fraige F Y, Langston P A, Chen G Z 2008 Powder Technology 186 224

    [11]

    ]Cleary P W, Sawley M L 2002 Applied Mathematical Modelling 26 89

    [12]

    ]Liffman K, Metcalfe G, Cleary P W 1997 Physical Review Letters 79 4574

    [13]

    ]Cleary P W 1998 TASK Quarterly Journal 2 385

    [14]

    ]Zhao Y Z, Jiang M Q, Zheng J 2009 Acta Phys. Sin. 58 1812 (in Chinese)[赵永志、江茂强、郑津 2009 物理学报 58 1812]

    [15]

    ]Langston P A, Awamleh M A, Fraige F Y, Asmar B N 2004 Chemical Engineering Science 59 425

    [16]

    ]Oda M, Iwashita K, Kakiuchi T 1997 Importance of particle rotation in the mechanics of granular materials (Rotterdam: Balkema) p207

    [17]

    ]Zhao Y Z, Jiang M Q, Xu P, Zheng J Y 2009 Acta Phys. Sin. 58 1819 (in Chinese)[赵永志、江茂强、徐平、郑津洋 2009 物理学报 58 1819]

    [18]

    ]Zhao Y Z, Cheng Y 2008 Acta Phys. Sin. 57 322 (in Chinese)[赵永志、程易 2008 物理学报 57 322]

    [19]

    ]Rosato A, Prinz F,Monte Carlo 1986 Powder Technology 49 59

    [20]

    ]Rosato A D, Lan Y, wang D T 1991 Powder Technology 66 149

  • [1]

    [1]Jiang Z H, Wang Y Y, Wu J 2006 Acta Phys. Sin. 55 4748 (in Chinese)[姜泽辉、王运鹰、吴晶 2006 物理学报 55 4748]

    [2]

    [2]Liang X W, Li L S, Hou Z G, Lü Z, Yang L, Sun G, Shi Q F 2008 Acta Phys. Sin.57 2300 (in Chinese)[梁宣文、李粮生、侯兆国、吕震、杨雷、孙刚、史庆藩 2008 物理学报 57 2300]

    [3]

    [3]Zhao Y M, Zhang S G, Jiao H G, Tie Z X 2006 J. China Univ. of Mining & Tech.35 586 (in Chinese)[赵跃民、张曙光、焦红光、铁占续 2006 中国矿业大学学报 35 586]

    [4]

    [4]Jiao H G, Zhao Y M, Wang Q Q 2006 J. China Univ. of Mining & Tech. (English Edition) 16 137

    [5]

    [5]Yin S R 1999 Ph. D. Dissertation (Xuzhou: China University of Mining &Technology) (in Chinese)[尹守仁 1999博士学位论文 (徐州:中国矿业大学)]

    [6]

    [6]Xu Y, Shun Q C, Zhang L, Huang W B 2003 Advances in Mechanics 33 251 (in Chinese)[徐泳、孙其诚、张凌、黄文彬 2003 力学进展 33 251]

    [7]

    [7]Zhu H P, Zhou Z Y, Yang R Y, Yu A B 2007 Chemical Engineering Science 62 3378

    [8]

    [8]Zhu H P, Zhou Z Y, Yang R Y, Yu A B 2008 Chemical Engineering Science 63 5728

    [9]

    [9]Cleary P W 2008 Powder Technology 179 144

    [10]

    ]Fraige F Y, Langston P A, Chen G Z 2008 Powder Technology 186 224

    [11]

    ]Cleary P W, Sawley M L 2002 Applied Mathematical Modelling 26 89

    [12]

    ]Liffman K, Metcalfe G, Cleary P W 1997 Physical Review Letters 79 4574

    [13]

    ]Cleary P W 1998 TASK Quarterly Journal 2 385

    [14]

    ]Zhao Y Z, Jiang M Q, Zheng J 2009 Acta Phys. Sin. 58 1812 (in Chinese)[赵永志、江茂强、郑津 2009 物理学报 58 1812]

    [15]

    ]Langston P A, Awamleh M A, Fraige F Y, Asmar B N 2004 Chemical Engineering Science 59 425

    [16]

    ]Oda M, Iwashita K, Kakiuchi T 1997 Importance of particle rotation in the mechanics of granular materials (Rotterdam: Balkema) p207

    [17]

    ]Zhao Y Z, Jiang M Q, Xu P, Zheng J Y 2009 Acta Phys. Sin. 58 1819 (in Chinese)[赵永志、江茂强、徐平、郑津洋 2009 物理学报 58 1819]

    [18]

    ]Zhao Y Z, Cheng Y 2008 Acta Phys. Sin. 57 322 (in Chinese)[赵永志、程易 2008 物理学报 57 322]

    [19]

    ]Rosato A, Prinz F,Monte Carlo 1986 Powder Technology 49 59

    [20]

    ]Rosato A D, Lan Y, wang D T 1991 Powder Technology 66 149

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出版历程
  • 收稿日期:  2009-06-12
  • 修回日期:  2009-06-29
  • 刊出日期:  2010-03-15

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