天津科技大学学报Issue(2)：51-56,6.DOI:10.13364/j.issn.1672-6510.20140110
随机运动导电粒子对微波腔内电场分布的影响
Effects of Random Motion Electrically Conductive Beads on the Electric Field Distribution in Microwave Applicator
摘要
Abstract
Non-uniform heating is a major problem in microwave applications,mainly due to inherently uneven distribution of electromagnetic energy in the microwave applicator. This research work is aimed to improve the uniformity of electric field distribution by utilizing the microwave reflection of the electrically conductive beads which move randomly in a mi-crowave rotary drum. Commercial softwares,EDEM and COMSOL,were coupled to simulate the interactions of multi-physical fields of the particles’ movement and the electromagnetic field. The effects of size,number and ways of random movement of the electrically conductive beads on the electric field distribution in the microwave applicator were discussed. The results show that the influence of beads on the electric field is small when the bead diameter is less than 20,mm;beads in free random motion deteriorate the electric field distribution due to the agglomeration of beads;beads in random motion but restricted between a fixed distance can improve the intensity of the electric field and the uniformity of electric field distribution.关键词
微波加热/均匀性/回转运动/导电粒子/电场Key words
microwave heating/uniformity/rotary movement/electrically conductive beads/electric field分类
化学化工引用本文复制引用
王瑞芳,王喆,徐庆,李占勇..随机运动导电粒子对微波腔内电场分布的影响[J].天津科技大学学报,2015,(2):51-56,6.基金项目
国家自然科学基金资助项目(21106104)；高等学校博士学科点专项科研基金资助项目(20111208110004) （21106104）
