摘要
对强化对流换热的强化机制研究的进展做了回顾与综述,包括:①将场协同原理从抛物形流动推广到椭圆形流动。②通过数值模拟与试验的手段,对场协同原理进行了多方面的验证,特别是设计了专门的试验台,验证了当流速与流体的温度梯度方向垂直时流体流动对该方向的热量传递没有贡献。③用数值分析实例论证了场协同原理能将现有文献中三种关于强化传热的解释统一起来,从而是一种最基本的强化传热的机制。④应用场协同原理开发了两种高效强化传热结构,它们与基本结构相比,具有传热强化的倍率高于阻力增加的比的特点。最后提出了场协同原理需要进一步研究的内容。
The recent developments in the study on heat transfer enhancement are reviewed and summarized. These include： （1） The field synergy principle has been extended from parabolic flow to elliptic flow which is more often than not encountered in engineering. （2） Validation of the field synergy principle has been performed via numerical and experimental methods for a number of cases, especially a specific test rig has been designed to demonstrate that when the flow direction is normal to the fluid temperature gradient, the flow and its velocity has nothing to do with the heat transfer in that direction. （3） It has been demonstrated via numerical examples that the field synergy principle can unify all the existing three explanations of convective heat transfer, hence it is the most fundamental mechanism for enhancing single-phase convective heat transfer. （4） Two examples of enhanced heat transfer configurations are presented which are deigned by applying the filed synergy principle and are characterized by the fact that the enhanced ratio of heat transfer is larger than the ratio of friction factor increase compared with the reference configuration. Finally some research needs in the filed synergy principle are proposed.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2009年第3期27-38,共12页
Journal of Mechanical Engineering
基金
国家重点基础研究发展计划(973计划
2007CB206902)
教育部科学技术研究重大(306014)资助项目
关键词
强化换热
场协同
迁移过程
数值模拟
试验研究
Heat transfer enhancement Field synergy principle Transport process Numerical simulation Experimental study
作者简介
何雅玲，女，1963年出生，教授，博士研究生导师。主要从事节能技术及新能源的研究。获得多项国家和省部级科技奖。E-mail：yalinghe@mail．xjtu．edu．cn.
陶文铨，男，1939年出生，教授，中国科学院院士。主要从事强化传热理论与技术、计算传热学等的研究。获得多项国家和省部级科技奖。E-maihwqtao@mail．xjtu．edu．cn
