管内脉动流强化换热研究进展

The Research Progress of Heat Transfer Enhancement of Pulsating Flow in Tube

针对管内脉动流换热,本文全面介绍了常用的脉动源及其特点,脉动流对换热的强化与空化效应、往复流效应、层流-湍流过渡区非线性效应、场协同效应和旋涡演化等相关机理。本文初步总结了各种控制参数对脉动流强化换热的影响,并对各国课题组的代表研究成果进行了介绍。从目前的研究现状看,脉动流换热研究仍然存在很多争议,对其机理的认识仍然非常模糊,特别是湍流脉动换热。

This paper introduces the current pulsating of the corresponding characteristics of pulsating sources and lists the advantages and disadvantages source respectively. Then combing the previous research results, it is found that the enhanced heat transfer mechanisms are related to various reasons, such as cav- itation effect, nonlinear effect, reciprocating flow phenomena, field synergy principle and vortex evolve- ment process. Also the influence of the controlling factors about the pulsating flow are analyzed. At last, this paper makes a systemic conclusion of the existing research achievements in pulsating heat transfer field, then providing the further research suggestions and prospects.