磁场作用下封闭立体强化传热的机理研究  

The Heat Transfer Enhancement Characteristics Study of the Closed Stereo under the Action of Magnetic Field

作　　者：王新华[1,2] 冯喜忠[2] 谭新星[1] 

机构地区：[1]长沙理工大学,湖南长沙410076 [2]商丘职业技术学院,河南商丘476000

出　　处：《商丘职业技术学院学报》2009年第5期59-62,共4页JOURNAL OF SHANGQIU POLYTECHNIC

基　　金：河南省教育厅自然科学项目(2009C480001);湖南省研究生科研创新项目资助

摘　　要：磁场强化传热属于有源强化传热技术的一类,是利用磁场的作用,通过改变流体质点的运动规律,加强流体的混合过程,提高流体的传热系数而达到强化传热的目的.本文通过比较存在冷热对立面的封闭立体在外加不同的磁场方向时,自然对流程度的不同,推导出磁场强化传热的一般机理性的公式,并验证磁场强化效果.Consolidating diathermanous technology, using the effect of magnetic field, changing the movement of points ot fluid, and strengthening the mixture process of the fluid, increasing the diathermanous coefficient to reach the result of consolidate. This paper compares the difference of natural convection of air in a cubic enclosure, that is heated from one vertical wall and cooled from the opposing wall, in addition to magnetic field with unlikeness magnetic direction, educe some formula about consolidate diathermanous technology, and validate the effect.

关 键 词：磁场强化传热 传热系数 自然对流 传热 

分 类 号：O361.3[理学—流体力学]