高效低阻强化换热技术的三场协同性探讨  

AN ANALYSIS OF THREE-FIELD SYNERGY ON HEAT TRANSFER AUGMENTATION WITH LOW PENALTY OF PRESSURE DROP

作　　者：何雅玲[1] 雷勇刚[1] 田丽亭[1] 楚攀[1] 刘占斌[1] 

机构地区：[1]西安交通大学能源与动力工程学院,动力工程多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2009年第11期1904-1906,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金重点项目(No.U0934005);国家重点基础研究发展计划项目(973项目)(No.2007CB206902)

摘　　要：在流场和温度场协同的基础上,分析了流场和压力场的协同配合关系。分析表明:在换热强化基本相同的情况下,增大速度和压力梯度间的夹角,可以改善速度场和压力场的协同性,从而减小压降的增大,实现较小压降下获得较高的换热性能。说明了高效低阻强化换热的技术在于温度场、速度场和压力场的较好协同。In this paper, an analysis of the synergy of velocity field and pressure field is carried out. The results show that an increase of the intersection angle between velocity and pressure gradient improves the synergy between the velocity field and the pressure field with an equal heat transfer enhancement, thus resulting in a reduction of penalty of pressure drop and higher heat transfer performance with low pressure drop. The synergy of the temperature field, velocity field and pressure field is the basic mechanism for the techniques of heat transfer augmentation with low penalty of pressure drop.

关 键 词：场协同 数值模拟 对流换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]