物理学报Issue(1)：014501-1-014501-6,6.DOI:10.7498/aps.63.014501
竖直振动管中颗粒的上升运动
The rising motion of grains in a vibrating pipe
摘要
Abstract
The rising motion of grains in a vibrating pipe is studied experimentally and by DEM (discrete element method) simulations. A pipe is partially inserted into a static granular layer. With the pipe initially filled with a certain height of grains, when the pipe is set into vertical vibrations, grains in the pipe will rise along the pipe and the motion will be finally stabilized at a certain height. The rising height and the speed of motion are strongly dependent on the vibration strength. By using a high speed camera and through DEM simulation, the trajectory of individual grains and the force acting on the grains in each vibration cycle can be obtained. A force-based mechanism for this rising motion is proposed. During vibrations of the pipe, the grains in the pipe are compacted and loosened alternately, and the force of the pipe and the grains varies periodically, thus leading to the rising motion of grains. A new possible way of continuously transporting grains is presented in this work.关键词
颗粒物质/振动/散料输送/离散元法Key words
granular materials/vibration/granule transport/discrete element method引用本文复制引用
张富翁,王立,刘传平,吴平..竖直振动管中颗粒的上升运动[J].物理学报,2014,(1):014501-1-014501-6,6.基金项目
国家重点基础研究发展计划(批准号:2012CB720406)和国家自然科学基金(批准号:51076010)资助的课题.@@@@Project supported by the State Key Development Program for Basic Research of China (Grant No.2012CB720406), and the National Natural Science Foundation of China (Grant No.51076010) （批准号:2012CB720406）
