干道式多孔结构蒸发/沸腾传热特性的研究

项目名称： 干道式多孔结构蒸发/沸腾传热特性的研究

项目编号： No.51306009

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 能源与动力工程

项目作者： 柏立战

作者单位： 北京航空航天大学

项目金额： 26万元

中文摘要： 近年来，随着科学技术飞速发展，许多领域特别是一些尖端技术领域对高热流密度（100-1000W/cm2）传热技术提出迫切需求。为解决相关领域因热问题出现的发展瓶颈，需进一步提高蒸发/沸腾传热临界热流密度（CHF）及传热性能，是目前工程热物理学科具有挑战性的前沿课题。申请人基于"相分离与调制"的概念，对传统多孔结构法进行结构改进，提出将干道式多孔结构应用于蒸发/沸腾传热。干道式多孔结构的应用，能够主动调节蒸发/沸腾传热气液相变界面位置，合理规划蒸汽与液体的流动路径，从而大大减小剧烈蒸发/沸腾传热过程严重的气液逆流阻力，达到显著提升CHF的目的。课题开展以可视化实验研究为主，并辅以一定的理论建模与分析，最终获得干道式多孔结构蒸发/沸腾传热系数，揭示干道式多孔结构蒸发/沸腾传热CHF的物理机制并建立其理论模型，探讨干道式多孔结构蒸发/沸腾传热机理与特性，提升我国在高热流密度传热技术领域的科技水平。

中文关键词： 多孔结构；干道；池沸腾；临界热流密度；实验

英文摘要： Recently, with the rapid development of science and technology, high heat flux (100-1000W/cm2) heat transfer technology is demanded in quite a few fields especially in some cutting edge technologies. To solve the development bottleneck in relevant fields caused by thermal problems, the heat transfer performance and critical heat flux (CHF) of evaporation/boiling heat transfer must be enhanced considerably, which is a challenging task in the subject of engineering thermophysics. In this project, based on the concept of "phase separation and modulation", the traditional porous structure is improved, and artery porous structure is employed in the evaporation/boiling heat transfer. The application of artery porous structure can actively adjust the liquid/vapor interface position in the evaporation/boiling process, properly regulate the flow paths of liquid and vapor, which can reduce the counterflow resistance significantly in severe evaporation/boiling process and effectively enhance the CHF of evaporation/boiling heat transfer. In this study, visual experimental method will be used as well as necessary theoretical modeling and analysis. Through this study, the evaporation/boiling heat transfer coefficient of artery porous structure will be obtained, the mechanism and theoretical model of evaporation/boiling heat t

英文关键词： porous structure；artery；pool boiling；critical heat flux；experiment