| 外电场对双极荷电颗粒碰撞及凝聚的影响 |
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| 引用本文： | 张向荣,王连泽.外电场对双极荷电颗粒碰撞及凝聚的影响[J].北京理工大学学报,2012,32(1):91-94. |
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| 作者姓名： | 张向荣 王连泽 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京,100081;清华大学工程力学系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目(10902014);北京市自然科学基金资助项目(1102031) |
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| 摘 要： | 为确定外电场对双极凝聚的影响,采用FORTRAN程序,通过计算得到颗粒在一定电流体场条件下的电荷分布统计规律,并考察外电场对双极荷电颗粒间的碰撞凝聚规律.计算结果表明,只有当荷电颗粒所受电场力与阻力的量级之比接近于1时,外电场才能起到增强双极凝聚效果的作用;在相同条件下,颗粒直径越大,外电场增强双极荷电颗粒的碰撞效果也越大.
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| 关 键 词： | 流场参数 双极荷电颗粒 外电场 碰撞及凝聚 |
| 收稿时间： | 2011/6/24 0:00:00 |
Effects of an External Electric Field on the Collision and Agglomeration Between Bipolarly Charged Particles |
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| ZHANG Xiang-rong and WANG Lian-ze.Effects of an External Electric Field on the Collision and Agglomeration Between Bipolarly Charged Particles[J].Journal of Beijing Institute of Technology(Natural Science Edition),2012,32(1):91-94. |
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| Authors: | ZHANG Xiang-rong and WANG Lian-ze |
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| Institution: | State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China |
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| Abstract: | In order to determine the effect of an external electric field on bipolar agglomeration,this article has solved the electro-hydro-dynamic(EHD) flow in the electrostatic agglomerator using FORTRAN code and calculated the charge distribution of particle in statistics under a certain EHD flow.Also,with an external electric field,the collision and agglomeration between bipolarly charged particles has been investigated.The presented results of calculation show that only the ratio of the electric field force to the drag force on a charged particle is near to 1∶1,the external electric field can significantly affect the bipolar agglomeration.The larger the particle is,the more collisions between bipolarly charged particles occur under external electric field. |
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| Keywords: | flow parameters bipolarly charged particles external electric field collision and agglomeration |
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