Simulation on granular flow characteristics in tower vacuum dryer

被引：0
|
作者：
Zhang, Zhi-Jun [1 ]
Xu, Cheng-Hai [1 ]
Zhang, Shi-Wei [1 ]
Tang, Xue-Jun [2 ]
Zhao, Xiang-Tao [2 ]
He, Xiang [2 ]
机构：
[1] School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
[2] Zhengzhou Science Research and Design Institute, State Administration of Grain Reserve, Zhengzhou 450053, China
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2008年 / 29卷 / SUPPL. 2期
关键词：
Confined flow - Drying - Granular materials - Finite difference method - Stiffness - Friction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Granular flow characteristics in tower vacuum dryer were simulated by adopting discrete element method and applying PFC2D program. The granular flow of half-continuous and continuous drying process was analyzed. The results show that the density, stiffness, friction coefficient of granular and friction coefficient of wall have obvious influence to the flow characteristics. The stiffness of wall has little impact. The granular is whole flow in continuous drying process; but the granular has no obvious cross-flow. For granular of the certain diameter, it can guarantee that it do not take place blockage as soon as it apply the fitful structure distance of drying room. The humidity asymmetry phenomenon of continuous drying process is the result of temperature asymmetry.
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页码：42 / 45
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