摘要
对撞式流化床超细气流粉碎机不同的底部结构所产生的底部区域内腔流场不同。利用计算流体力学(CFD)软件 FLUENT6.3对平底、120°锥底、球形底等三种底部结构内腔气流场进行有限元分析计算,并以试验结果验证该模型的正确性,根据计算结果绘制不同底部结构内腔的流线图、速度矢量图。结果表明,采用120°锥形底结构能够防止底部积料及物料对粉碎机机体的磨损,有利于提高粉碎效果。
The air flow-field in internal cavity at the bottom of the fluidized bed opposed superfine jet mill varies with different bottom structures. The FEA calculation of flow field in the internal cavity of the mill flat bottom, 120° tapered bottom and sphere bottom is obtained by the CFD software FLUENT 6.3, and the correctness of the model is validated by the test results. The flow pattern and velocity vector diagram of the internal cavity of the mill with different bottom structures are presented by the calculated results. The results show that employing the 120° tapered bottom structure can prevent particles accumulating in the bottom and the wear between particles and the mill body, which is beneficial to improve the crushing effect.
出处
《矿山机械》
北大核心
2008年第19期89-92,共4页
Mining & Processing Equipment
基金
江苏省高校自然科学研究计划项目(01KJB530004)
关键词
底部结构
数值模拟
对撞式流化床超细气流粉碎机
Bottom structures
Numerical simulation
Fluidized bed opposed superfine jet mill
