[1]黄凤良,夏春梅,陈敏,等.确定对流传质系数的膜渗模型[J].南京师范大学学报(工程技术版),2007,07(03):026-29.
　Huang Fengliang,Xia Chunmei,Chen Min.Film-Penetration Method to Determining the Convective Mass Transfer Coefficient[J].Journal of Nanjing Normal University(Engineering and Technology),2007,07(03):026-29.
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确定对流传质系数的膜渗模型
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
07卷
期数:
2007年03期
页码:
026-29
栏目:
出版日期:
2007-09-30

文章信息/Info

Title:
Film-Penetration Method to Determining the Convective Mass Transfer Coefficient
作者:
黄凤良;夏春梅;陈敏;
南京师范大学电气与自动化工程学院, 江苏南京210042
Author(s):
Huang Fengliang; Xia Chunmei; Chen Min
School of Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210042,China
关键词:
对流传质;  传质系数;  膜渗模型;  扩散系数
Keywords:
conv ective mass transfer;  mass transfer co efficien t;  Film-Penetration m ode; l d iffusion coeffic ient
分类号:
O484
摘要:
针对对流传质过程研究中两个具有代表性的模型理论——薄膜模型理论和渗透模型理论确定的对流传质系数与实验结果存在一定不一致的问题,在分析薄膜模型理论和渗透模型理论特点的基础上,基于边界层理论,提出了确定对流传质系数的膜渗模型.讨论了该模型理论的原理、对流传质系数的确定方法及系数的正确性、优越性,获得了利用膜渗模型确定的对流传质系数表达式,并与遵循薄膜模型理论、渗透模型理论及Frossling经验公式的对流传质系数进行了比较.结果表明:膜渗模型更符合边界层理论,能更合理的解释流动边界上的对流传质过程;对流传质系数与扩散系数的关系为Dn(n=0.5~1.0),符合经验公式及实际中大量实验结果.
Abstract:
In o rder to study the process o f the convectivem ass transfer, many k inds o fm ethods and m ode ls had been presented in the past. The FILM theory and the Pene tration theo ry are the tw o representativ e theor ies. But there are som e d ifferences be tw een themass transfer coe fficien ts form the tw o theo ries and the actua l exper im enta l resu lt. Based on the bounda ry laye r theory and the analysis of the charac ters o f the FILM theory and the Pene tration theory, the Film-Penetra tion m ode l is presented. The pr inciple o f them ode l is discussed. W ith them ode,l the fo rmu la tion fo r the m ass transfer coeffic ient is deduced in deta ils. The adv antage and the co rrectness o f the form ulation are proved. The result shows that the F ilm-Pene tration m ode l is m uch fit fo r the boundary lay er theo ry and is mo re reasonab le to exp la in the process of the convectivem ass transfer, and the expression, to describe the re lation between them ass transfer coeffic ient and the diffusion coeffic ient, is Dn ( n= 0. 5~ 1. 0) and is m uch fit for the actua l exper imenta l resu lt

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金( 60202012)资助项目.
作者简介: 黄凤良( 1971-) , 教授, 博士, 主要从事自动测试技术与智能化测试系统、软测试技术的教学与研究.E-m ail:huangfengl iang@ n jnu. edu. cn
更新日期/Last Update: 2013-06-04