“边界层”在多种化工单元操作中的体现  

"Boundary Layer" in a Variety of Chemical Unit Operations

作　　者：陈驰[1] 

机构地区：[1]武昌理工学院生命科学学院制药工程系,湖北武汉430223

出　　处：《化工高等教育》2014年第6期92-97,共6页Higher Education in Chemical Engineering

摘　　要：诸多的化工单元操作过程中,普遍存在着"边界层"现象。"边界层"的存在对化工单元的操作过程会产生明显的影响。本文描述和类比了多种"边界层"的特征,并在物理化学的知识层面上对其产生机理进行了阐述,最后指出通过削弱边界层可以提高动量传递、质量传递和热量传递的速率和效率。In many of the chemical unit operations, ＂ boundary layer＂ phenomenon exists generally.The existence of ＂ Boundary Layer＂ of chemical unit operation processes will produce a significant impact.In this paper,characteristics of the various ＂ boundary layer＂ are described and compared.And its generation mechanism is described in the level of knowledge of physical chemistry.Finally a view that through weakening the thickness of boundary layer can increase the rate and efficiency of momentum transfer,mass transfer and heat transfer is presented.

关 键 词：化工原理 单元操作 边界层 特征 

分 类 号：TQ02-4[化学工程] G642[文化科学—高等教育学]