%0 Journal Article
%T Variable-mass Flow through the Vertical Perforated Channels<br>垂直多孔道中的变质量流动
%A XU Zhi-gang
%A YU Feng
%A LI Rui-jiang
%A WU Yong-qiang
%A ZHU Zi-bin
%A ZHANG Cheng-fang
%A <br>徐志刚
%A 俞丰
%A 李瑞江
%A 吴勇强
%A 朱子彬
%A 张成芳
%J 过程工程学报
%D 2003
%I 
%X 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.
%K perforated channel
%K variable-mass flow
%K momentum exchange<br>多孔通道
%K 变质量流动
%K 动量交换
%K 分流
%K 合流
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=FB59B6730CC770ED&yid=D43C4A19B2EE3C0A&vid=38B194292C032A66&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=DF92D298D3FF1E6E&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=11