摘要
本文根据两相流体力学的基本原理,提出了描述载流过程的数学模型.通过对内径为90mm,载流管高度5.7m的载流床轴向压降的测定、计算和实测的拟合,获得了模型主要参数—曳力系数的经验方程式.在此基础上,定量计算了颗粒性质、操作条件对床层空隙度、床压降的影响.
According to two-phase hydrodynamic theory, a mathematical model is suggested for describing the dilute-phase conveying process. The pressure drop profiles along axial distance of a conveying bed (I. D 90mm, effective height 5.7m) is measured. By using the data fitting method, an empiuical equation is obtained for calculating the drag coefficient which is a main parameter of the model. Based on the above results, the effect of particle properties and operating conditions on bed voidage and pressure drop are calculated.
出处
《化工冶金》
CSCD
北大核心
1992年第1期38-43,共6页
基金
国家自然科学基金
关键词
两相
流体力学
曳力系数
载流床
Two-phase hydrodynamics Drag coefficient Conveying bed