Stabilizing effect of plasma discharge on bubbling fluidized granular bed

作     者：胡茂彬 党赛超 马强 夏维东 Hu Mao-Bin;Dang Sai-Chao;Ma Qiang;Xia Wei-Dong;School of Engineering Science, University of Science and Technology of China

作者机构：School of Engineering ScienceUniversity of Science and Technology of China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2015年第24卷第7期

页      面：288-292页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11035005 and 11034010) 

主　　题：plasma fluidized bed granular matter stabilization effect 

摘      要：Fluidized beds have been widely used for processing granular materials. In this paper, we study the effect of plasma on the fluidization behavior of a bubbling fluidized bed with an atmospheric pressure plasma discharger. Experiment results show that the bubbling fluidized bed is stabilized with the discharge of plasma. When the discharge current reaches a minimum stabilization current Cms, air bubbles in the bed will disappear and the surface fluctuation is completely suppressed.A simplified model is proposed to consider the effect of electric Coulomb force generated by the plasma. It is found that the Coulomb force will propel the particles to move towards the void area, so that the bubbling fluidized bed is stabilized with a high enough plasma discharge.