|本期目录/Table of Contents|

[1]罗燕,周剑秋,郭钊,等.撞击流反应器中导流螺旋片强化撞击过程的数值模拟[J].武汉工程大学学报,2012,(11):60-64.[doi:103969/jissn16742869201211013]
 LUO Yan,ZHOU Jian qiu,et al.Numerical simulation of strengthening impingement process of impinging stream reactor with spiral lamella[J].Journal of Wuhan Institute of Technology,2012,(11):60-64.[doi:103969/jissn16742869201211013]
点击复制


撞击流反应器中导流螺旋片强化撞击过程的
数值模拟
(/HTML)
分享到:

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2012年11期
页码:
60-64
栏目:
化学与化学工程
出版日期:
2012-12-10

文章信息/Info

Title:
Numerical simulation of strengthening impingement process of
impinging stream reactor with spiral lamella
文章编号:
16742869(2012)11006005
作者:
罗燕12周剑秋1郭钊2熊卉2杨侠2
1.南京工业大学机械与动力工程学院,江苏 南京210009;
2.武汉工程大学机电工程学院,湖北 武汉 430074
Author(s):
LUO Yan1 2 ZHOU Jianqiu1 GUO Zhao2 XIONG Hui2 YANG Xia2
1. School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009, China;
2. School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
立式循环撞击流反应器数值模拟导流片厚度螺圈数
Keywords:
vertical circulation impinging stream reactor numerical simulation spiral lamella thickness spire turn number
分类号:
TQ05
DOI:
103969/jissn16742869201211013
文献标志码:
A
摘要:
为研究导流螺旋片对立式循环撞击流强化撞击过程的规律,提出最优的导流螺旋片尺寸.采用Fluent软件对立式循环撞击流反应器中增加导流螺旋片前、后的撞击过程进行数值模拟,得到了导流螺旋片厚度分别为0、10、20、30 mm和螺圈数分别为0、1、2的反应器流场的速度矢量图、特征撞击面上的平均速度和速度均方根差,并对比分析了其传质性能及混合性能.结果表明,增加了导流螺旋片,导流筒内部出现了流线弯曲及流动斜交,提高了流场的各向异性,使流场中速度分层明显,并增大了速度梯度,从而强化了撞击区之外的流场混合.同时,当螺圈数N=1,螺旋片的厚度L=30 mm时,反应器内撞击过程中的相间传质效果最好;当不加螺旋片时,反应器内撞击过程中的相间混合效果最好.
Abstract:
In order to study the law of strengthening the impingement process of vertical circulation impinging stream reactor(VCISR) with spiral lamella, the optimal dimension of spiral lamella was proposed. In the before and after the installation of spiral lamella, the impingement process of VCISR was simulated numerically by using Fluent software. Then the vectors of the velocity, average velocity and rootmeansquare velocity were obtained between spiral lamella of 0, 10, 20, 30 and spire turn number of 0, 1, 2. By means of them, the mass transfer and the mixing performance were compared. The results show that, after the installation of spiral lamella, the bend and bias of streamline which appears inside the draft tube promotes the anisotropy of the flow field. It also contributes to the formation of distinct velocity layer and the increasing of the velocity gradient, thereby strengthening the mixing of the flow field outside the impinging zone. At the same time, the best result of mass transfer performance is obtained when the spire turn number N is 1 and the thickness of spiral lamella is 30 mm, the mixing performance is the best when the spiral lamella is not installed.

参考文献/References:

[1]Elperin IT. Heat and Mass Transfer in Opposing Current \[J\]. Engng Physics, 1961,21(6): 6268.
[2]Pitt G J, Millward G R. Coal and Modern Coal Processing: An Introduction\[M\]. New York: Academic Press, 1979.
[3]Bley P, Ehrfeld W. Molecular dynamics of disparate mixtures in opposed jets\[M\]. In: Fisher S S (ed). New York:Rarified Gas Dynamics. AIAA, 1981.
[4]伍沅. 立式循环撞击流反应器\[P\]. 中国专利:ZL03235518.1.20041201.
[5]伍沅,肖杨,周玉新,等.浸没循环撞击流反应器中的微观混合\[J\].中国化学工程学报:英文版,2003,11(4):420425.
[6]杨侠,罗燕,郭嘉,等.立式循环撞击流反应器三维流场的数值模拟\[J\].化工机械,2011,38(1):8790.
[7]杨侠,张涛,梁利云,等.立式循环撞击流反应器中桨叶垂直交错排布条件下的混合性能\[J\].化工进展,2011,30(4):715719.
[8]杨侠,毛志慧,吴艳阳,等.立式循环撞击流反应器不同倾角桨叶的混合性能比较\[J\].化工机械,2011,38(3):331334,374.
[9]朱红钧,林元华,谢龙汉. FLUENT流体分析及仿真应用教程\[M\].北京:人民邮电出版社,2010.
[10]张涛,吴艳阳,杨清,等.立式撞击流反应器中桨叶优化设计\[J\].武汉工程大学学报,2011,33(5):7881.
[11]伍沅. 撞击流:原理·性质·应用\[M\].北京:化学工业出版社,2006.
[12]杨侠,刘丰良,毛志慧,等.立式循环撞击流反应器不同撞击间距下混合性能分析\[J\].化工进展,2012,31(6):12101214.

相似文献/References:

[1]周玉新1,2,魏新宇1,等.撞击流反应器法纳米白炭黑的制备[J].武汉工程大学学报,2015,37(07):1.[doi:10. 3969/j. issn. 1674-2869. 2015. 07. 001]
 ,,et al.Preparation of nanometer silica in impinging streams reactor[J].Journal of Wuhan Institute of Technology,2015,37(11):1.[doi:10. 3969/j. issn. 1674-2869. 2015. 07. 001]

备注/Memo

备注/Memo:
收稿日期:20121026基金项目:国家自然科学基金(51276131)作者简介:罗燕(1977),女,湖北黄梅人,助教,博士研究生.研究方向:化学过程机械、撞击流技术.
更新日期/Last Update: