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浙江大学学报(工学版)
浙江大学学报(工学版)
能源与机械工程     
带正电颗粒电凝并的显微可视化研究
沙东辉,骆仲泱,鲁梦诗,江建平,方梦祥,周栋,陈浩
浙江大学 能源工程学院,浙江 杭州 310027
Electrostatic agglomeration of positively charged particles observed by microscopic visualization system
SHA Dong hui, LUO Zhong yang, LU Meng shi, JIANG Jian ping, FANG Meng xiang, ZHOU Dong, CHEN Hao
College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
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摘要：

利用高速摄像结合显微可视化技术,在一个截面积为10 mm×25 mm的矩形流道中,对以焚香颗粒为代表的细颗粒物相对于玻璃大颗粒的运动特性进行实验研究.通过实验发现,在正直流电场中,玻璃大颗粒和细颗粒物都被荷上了正电荷；当玻璃大颗粒和细颗粒物均不荷电时,细颗粒物相对于玻璃大颗粒主要发生圆球绕流行为；当玻璃大颗粒被荷上正电后,未荷电或荷电量较少的细颗粒物在运动到离玻璃大颗粒较近处,细颗粒物被玻璃大颗粒吸引并发生凝并,荷电量较多的细颗粒物被排斥；通过测量细颗粒物的速度可以发现：细颗粒物在接近玻璃大颗粒的过程中速度先减小,被吸引后速度快速增加.
Abstract:

A technique composed of high speed digital video and microscopic visualization was applied to experimentally analyze motion characteristic between fine incense particles and large glass particle in a rectangular flow channel. The channel’s cross sectional area was 10 mm×25 mm. Results show that fine particles and the large glass particle are all positively charged in a positive DC electric field. Fine particles flow over the large glass particle when both of them are uncharged. After the large glass particle is positively charged, fine particles will be attracted and agglomerated by the large glass particle when less charged or uncharged fine particles move enough close to the large glass particle. If the charge of fine particles is more, fine particles will be rejected. The velocities of fine particles were measured. The velocities of fine particles decrease when they are closing to the large glass particle, and rapidly increase after they begin to be attracted．
出版日期: 2016-03-31
:  TB 89  
基金资助:

国家“973”重点基础研究发展规划资助项目(2013CB228500).
通讯作者: 骆仲泱，男，教授.ORCID:0000 0001 8764 2986.E-mail：     E-mail: zyluo@zju.edu.cn
作者简介: 沙东辉（1990-），男，硕士生，从事PM2.5控制的研究.ORCID:0000 0003 0175 603X.E-mail：shadonghui@zju.edu.cn
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引用本文:

沙东辉,骆仲泱,鲁梦诗,江建平,方梦祥,周栋,陈浩. 带正电颗粒电凝并的显微可视化研究[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.01.014.

SHA Dong hui, LUO Zhong yang, LU Meng shi, JIANG Jian ping, FANG Meng xiang, ZHOU Dong, CHEN Hao. Electrostatic agglomeration of positively charged particles observed by microscopic visualization system. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.01.014.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.01.014    或    http://www.zjujournals.com/eng/CN/Y2016/V50/I1/93

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