摘要
通过建立气-固二相流运动的基本方程,对单体颗粒在直管气流干燥机内的运动特性进行分析研究。经计算,单体颗粒在整个干燥过程中都是处于不等速运动状态。结论:气流干燥时间短、速度快是颗粒不等速运动的结果。
Based on establishing the primary equations of air-solid two-phase flow motion,the motion characteristics of single particle in a straight tube air-stream drying machine has been analysed and studied.Through calculation the single particles are in a non-uniform motion state during the whole process of drying,with the result that the short time and the high speed of airstream drying.
关键词
气流干燥
两相流
颗粒运动
选煤
airstream drying ,relative velocity
resistance coefficient
retention time
