水平管外套丝网壁面液体升膜的研究——温度场对其流动特性的影响  

Study of rising liquid film on surface of horizontal metallic mesh tube——characteristics effected by temperature field

作　　者：梅宁[1] 何明珠[1] 于海燕[1] 

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《热科学与技术》2009年第1期39-43,共5页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(50676086)

摘　　要：研究了有温度场存在的情况下水平金属丝网管外壁面液体升膜的形成机理;分析了驱动液膜形成的毛细压力;考虑了热毛细对流的作用,建立单组分流体的数学模型,求解方程,得出壁面液膜的速度分布;并对影响水平金属丝网管升膜特性的因素进行了分析。结果表明,液膜爬开速度的大小受管径及管壁和金属丝网间隙大小的影响。在热毛细对流的作用下,液膜爬开速度大幅度加快。The formation of the rising liquid film on the surface of a horizontal metallic mesh tube in the presence of the temperature field was investigated. A numerical model was established to analyze the capillary pressure that drives the liquid film, considering the thermocapillary flow. The distribution of the velocity of the liquid film was obtained and the factors that influece the characteristics of the rising liquid film were analyzed.

关 键 词：金属丝网管 升膜 热毛细力 

分 类 号：TK124[动力工程及工程热物理—工程热物理]