矩形槽通道内周期性充分发展换热的研究  

THE STUDY OF THE PERIODICALLY FULLY DEVELOPED CONVECTION HEAT TRANSFER IN CHANNELS WITH GROOVED PARTS

作　　者：李凌[1] 杨茉[1] 余敏[1] 卢玫[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《工程热物理学报》2005年第4期689-691,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50476080)上海市教委发展基金(No.03GK08)上海理工大学校青年基金(No.04XQN004)

摘　　要：本文应用数值模拟的方法研究了矩形槽通道内周期性充分发展换热情况及几何参数对流动和换热的影响.结果表明:当周期长度一定时,上下矩形突出部分的水平间距由小变大时,Nu和阻力系数f都是有所减小;周期长度一定且上下矩形突出部分水平间距相等时,增加矩形突出部分的宽度,Nu和阻力系数f会增加;当矩形突出部分的宽度一定, 并且水平交错均匀排列时,增加矩形突出部分的水平间距即增加周期长度时Nu减小,而f先是减小而后又有所增加.The periodically fully developed convection heat transfer in channels with periodically grooved parts was simulated numerically in this paper. It was found that when the periodicity length is constant, Nu and the friction coefficient / will decrease with the increase of the level distance between the upper and lower rectangular salients. And when distance between the salients is also constant, Nu and / will increase with the increase of the salient width. It was also found that when the rectangular salient are arranged equidistantly and their widths are constant, Nu will decrease while / will decrease firstly and then increase again with the increase of the distance between them.

关 键 词：槽间距 矩形槽通道 对流换热 数值分析 

分 类 号：TK124[动力工程及工程热物理—工程热物理]