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Cyclical pulsation properties of particles in cone silo

Wang Hui Jia Fu-Guo Han Yan-Long Zhang Ya-Xiong Cao Bin

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Cyclical pulsation properties of particles in cone silo

Wang Hui, Jia Fu-Guo, Han Yan-Long, Zhang Ya-Xiong, Cao Bin
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  • Intense particle pulsation during discharging may lead to the vibration of silo, even the failure of silo structure. To date, the studies related to particle pulsation have mainly concentrated in the following aspects: the noise caused by vibration of silo, the minimum decisive height to produce silo music and the factors affecting particle pulsation. However, the above studies cannot in depth analyze the motion state nor the flow law of all particles in silo. To explore the pulsation characteristics of particles, in this paper we simulate the discharging tests of ellipsoidal particles in deep silo with different half-cone angles based on the discrete element method, in order to reveal the mechanisms of particle pulsation and variation of contact force among the particles in the silo. In each simulation discharging test, the cylinder section of silo is divided into 4 fixed areas where flow behavior and the motion characteristics of particles are analyzed. The simulation results show that the velocity fluctuation of particles exists in the whole discharging process. At the early stage of discharging, the cyclical pulsation with large amplitude appears while irregular fluctuation with small amplitude occurs in the later stages. The study also finds that the dynamic characteristics of the axial force among particles are the same as those of velocity pulsation in the corresponding areas. Besides, the amplitude of particle pulsation shows an increase trend and the contact force of particles presents more periodic pulsation along the negative direction of outlet. The pulsation characteristics(velocity pulsation and force pulsation) of adjacent particle layers are similar, including similar waveform and identical cycle. During the intense pulsation stage, each minimum of the axial force of particles in the top layer is close to the gravity, indicating that the contact force among these particles disappears. Furthermore, the periodic pulsation of particles causes the contact force among particles to periodically disappear. It is noted that the stability of discharging, frequency, amplitude and duration of the intense pulsation increase with the decrease of the half-cone angle. In order to evaluate the fluctuation degree of the velocity pulsation, the standard deviation of particle velocities is used. Note that the particle velocities are no longer subjected to the influence of rising trend, which result is obtained by the finite difference method. The results show that the standard deviation gradually increases with the decrease of half-cone angle. This is because the increase of half-cone angle causes the time and amplitude of stable fluctuation to decrease. This numerical study of particle pulsation will provide the reference for safety design of discharging devices.
      Corresponding author: Jia Fu-Guo, jfg204@163.com
    • Funds: Project supported by the National Natural Science Foundation of China(Grant No. 51575098), the National Science Foundation of Heilongjiang Province, China(Grant No. E201322) and the Harbin Foundation for Outstanding Academic Leaders, China(Grant No. RC2013XK006004).
    [1]

    Wang G Q, Hao W J, Wang J X 2010 Discrete Element Method and its Application in EDEM(Xi'an:Xi'an Technological University press) p14(in Chinese)[王国强, 郝万军, 王继新2010离散单元法及其在EDEM上的实践(西安:西安工业大学出版社)第14页]

    [2]

    Sun Q C, Hou M Y, J F 2011 Physics and Mechanics of Granular Materials(Beijing:Science Press) p242(in Chinese)[孙其诚, 厚美瑛, 金峰2011颗粒物质物理与力学(北京:科学出版社)第242页]

    [3]

    Khalilitehrani M, Abrahamsson P J, Rasmuson A 2014 Powder Technol. 263 45

    [4]

    Liu Y, Han Y L, Jia F G, Yao L N, Wang H, Shi Y F 2015 Acta Phys. Sin. 64 114501 (in Chinese)[刘扬, 韩燕龙, 贾富国, 姚丽娜, 王会, 史宇菲2015物理学报64 114501]

    [5]

    Chan K W, Kwan A K H 2014 Particuology 16 108

    [6]

    Ouyang H W, Huang S C, Liu Z M, Wang Q 2009 J. Food Eng. 91 118

    [7]

    Liu H X, Xu X M, Guo L F 2014 Trans. Chin. Soc. Agric. Eng. 21 9 (in Chinese)[刘宏新, 徐晓萌, 郭立峰2014农业工程学报21 9]

    [8]

    Silvia V, Riccardo A, Andrea C S 2014 Chem. Eng. Res. Des. 92 256

    [9]

    Osinov VA 1998 Soil Dyn. Earthq. Eng. 17 13

    [10]

    Liu Y 2015 M. S. Dissertation(Harbin:Northeast Agricultural University)(in Chinese)[刘扬2015硕士学位论文(哈尔滨:东北农业大学)]

    [11]

    Uñac R O, Vidales A M, Benegas O A, Ippolito I 2012 Powder Technol. 225 214

    [12]

    Garcimartín A, Zuriguel I 2011 Phys. Rev. E 84 031309

    [13]

    Kmita J 1985 J. Struct. Eng. 111 190

    [14]

    Wilde K, Rucka M, Tejchman J 2008 Powder Technol. 186 113

    [15]

    Phillips C E S 1910 Proc. R. Inst. G. B 19 742

    [16]

    Li H, Kwauk M 1989 Chem. Eng. Sci. 44 261

    [17]

    Yang S C, Hsiau S S 2001 Powder Technol. 120 244

    [18]

    Brown R L, Richards J C 1960 Trans. Inst. Chem. Eng. 38 243

    [19]

    Tejchman J, Gudehus G 1993 Powder Technol. 76 201

    [20]

    Mukesh L D, Kranthi K J 2006 Powder Technol. 167 55

    [21]

    Benson K M, Shandon F Quinna, Sankaran S 2004 Powder Technol. 145 190

    [22]

    Tejchman J 2002 Am. J. Phys. 70 890

    [23]

    Han Y L, Jia F G, Zeng Y, Jiang L W, Zhang Y X, Cao B 2016 Powder Technol. 297 153

    [24]

    Code for Design of Grain Steel Silos 2011 GB 50322(in Chinese)[粮食钢板筒仓设计规范2011 GB 50322]

    [25]

    Ketterhagen W R, Curtis J S, Wassgren C R, Hancock B C2009 Powder Technol. 1 1

    [26]

    Vivanco F, Rica S, Melo F 2012 Granul. Matter 5 563

  • [1]

    Wang G Q, Hao W J, Wang J X 2010 Discrete Element Method and its Application in EDEM(Xi'an:Xi'an Technological University press) p14(in Chinese)[王国强, 郝万军, 王继新2010离散单元法及其在EDEM上的实践(西安:西安工业大学出版社)第14页]

    [2]

    Sun Q C, Hou M Y, J F 2011 Physics and Mechanics of Granular Materials(Beijing:Science Press) p242(in Chinese)[孙其诚, 厚美瑛, 金峰2011颗粒物质物理与力学(北京:科学出版社)第242页]

    [3]

    Khalilitehrani M, Abrahamsson P J, Rasmuson A 2014 Powder Technol. 263 45

    [4]

    Liu Y, Han Y L, Jia F G, Yao L N, Wang H, Shi Y F 2015 Acta Phys. Sin. 64 114501 (in Chinese)[刘扬, 韩燕龙, 贾富国, 姚丽娜, 王会, 史宇菲2015物理学报64 114501]

    [5]

    Chan K W, Kwan A K H 2014 Particuology 16 108

    [6]

    Ouyang H W, Huang S C, Liu Z M, Wang Q 2009 J. Food Eng. 91 118

    [7]

    Liu H X, Xu X M, Guo L F 2014 Trans. Chin. Soc. Agric. Eng. 21 9 (in Chinese)[刘宏新, 徐晓萌, 郭立峰2014农业工程学报21 9]

    [8]

    Silvia V, Riccardo A, Andrea C S 2014 Chem. Eng. Res. Des. 92 256

    [9]

    Osinov VA 1998 Soil Dyn. Earthq. Eng. 17 13

    [10]

    Liu Y 2015 M. S. Dissertation(Harbin:Northeast Agricultural University)(in Chinese)[刘扬2015硕士学位论文(哈尔滨:东北农业大学)]

    [11]

    Uñac R O, Vidales A M, Benegas O A, Ippolito I 2012 Powder Technol. 225 214

    [12]

    Garcimartín A, Zuriguel I 2011 Phys. Rev. E 84 031309

    [13]

    Kmita J 1985 J. Struct. Eng. 111 190

    [14]

    Wilde K, Rucka M, Tejchman J 2008 Powder Technol. 186 113

    [15]

    Phillips C E S 1910 Proc. R. Inst. G. B 19 742

    [16]

    Li H, Kwauk M 1989 Chem. Eng. Sci. 44 261

    [17]

    Yang S C, Hsiau S S 2001 Powder Technol. 120 244

    [18]

    Brown R L, Richards J C 1960 Trans. Inst. Chem. Eng. 38 243

    [19]

    Tejchman J, Gudehus G 1993 Powder Technol. 76 201

    [20]

    Mukesh L D, Kranthi K J 2006 Powder Technol. 167 55

    [21]

    Benson K M, Shandon F Quinna, Sankaran S 2004 Powder Technol. 145 190

    [22]

    Tejchman J 2002 Am. J. Phys. 70 890

    [23]

    Han Y L, Jia F G, Zeng Y, Jiang L W, Zhang Y X, Cao B 2016 Powder Technol. 297 153

    [24]

    Code for Design of Grain Steel Silos 2011 GB 50322(in Chinese)[粮食钢板筒仓设计规范2011 GB 50322]

    [25]

    Ketterhagen W R, Curtis J S, Wassgren C R, Hancock B C2009 Powder Technol. 1 1

    [26]

    Vivanco F, Rica S, Melo F 2012 Granul. Matter 5 563

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Publishing process
  • Received Date:  04 June 2016
  • Accepted Date:  14 October 2016
  • Published Online:  05 January 2017

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