文献类型：期刊文献

中文题名：垂直多孔通道中的变质量流动

英文题名：Variable-mass Flow through the Vertical Perforated Channels

作者：徐志刚[1];俞丰[1];李瑞江[1];吴勇强[1];朱子彬[1];张成芳[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2003

卷号：3

期号：1

起止页码：1

中文期刊名：过程工程学报

外文期刊名：The Chinese Journal of Process Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：上海市重中之重重点学科建设项目资助(编号: 2000)

语种：中文

中文关键词：多孔通道;变质量流动;动量交换;分流;合流

外文关键词：perforated channel; variable-mass flow; momentum exchange

摘要：导出了在垂直圆形多孔通道中的分流和合流流动含重力项的动量交换方程. 通过大型冷模实验,得出了分流、合流在向上流动、向下流动时的静压分布和虚拟压强分布,应用黄金分割法进行一维搜索,得出了实验条件下分流、合流的动量交换系数为0.77和1.26,平均相对误差分别为10%和15%. 结果说明表观气速较小时,重力的影响不能忽略.
The momentum equation with gravity considered was applied to describe the variable-mass flow in the vertical perforated channel for radial packed reactors. The profiles of pressure and the virtual pressure along the perforated channels were measured for upward and downward flows in the distributor or collector on large scale mock-up. Under the experimental conditions, the coefficients of momentum exchange for distribution and collection were calculated to be equal to 0.77 with the average relative error of 10% and 1.26 with the average relative error of 15% respectively. It is concluded that gravity can not be neglected as the mass velocity is relatively small.