狭缝通道两相流强化换热研究综述  

A Overview of the Intensified Heat Exchange Research of Two-phase Flows in a Narrow-gap Channel

作　　者：王增辉[1] 贾斗南[1] 刘瑞兰[1] 

机构地区：[1]西安交通大学核能与热能工程系,陕西西安710049

出　　处：《热能动力工程》2002年第4期329-331,335,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：在狭缝通道高速流体的冲刷下 ,狭缝不易产生杂质沉淀污染传热表面使传热工况恶化。狭缝两相流传热技术结构紧凑 ,具有显著的强化效果 ,是一种既经济又有效地强化传热方法 ,因此狭缝传热在航空航天、微电子和核反应堆等领域得到广泛应用。狭缝两相流强化传热的主导传热机理是受压变形气泡底部的微液膜蒸发机理。本文对狭缝通道内两相流强化换热的研究进展进行了一些介绍 。Under the sweep action of a high-speed fluid in a narrow gap channel the narrow gap is immune from foreign matter sedimentation which may pollute heat transfer surfaces, resulting in a deterioration of the heat transfer conditions. Narrow-gap two-phase heat transfer technology features a compact structure and, endowed with remarkable intensification effectiveness, represents a kind of both economical and effective intensified heat transfer method. Hence, the narrow gap heat transfer has been widely utilized in various engineering sectors, such as aerospace and aeronautics, microelectronics and nuclear reactors. The main heat transfer mechanism of the above-cited heat transfer is based on the micro-liquid film evaporation at the bottom of pressured and deformed gas bubbles. The authors have given a brief account of the research progress made in the area of two-phase flow intensified heat transfer in a narrow-gap channel with an overview of the present status of the on-going study.

关 键 词：狭缝通道 两相流 强化换热 狭缝传热技术 微膜蒸发 

分 类 号：TK124[动力工程及工程热物理—工程热物理]