非线性对流项对水平刻槽管壁面液体升膜特性影响的研究  

Influence of non-linear convection term on behavior of rising film on fluted surface of horizontal tube

作　　者：梅宁[1] 于海燕[1] 何明珠[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2期112-117,共6页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(50676086)

摘　　要：对驱动液膜形成的润湿力进行分析,建立含对流项的非线性数学模型,通过求解模型对水平刻槽管壁面液体升膜非线性特性进行研究,基于此对比级数解与拟线性解的计算结果。忽略一个或两个方向上的对流项进行逐级求解,在相同的Re下分析各个方向上的对流项对速度解的影响。结果表明:拟线性解的计算结果与级数解的一级近似解的计算结果基本一致;n方向上的对流项对速度解的影响较大。By analyzing the wetting power, which drives the formation of the rising liquid thin film, a non-linear mathematical model was developed to investigate the non-linear behavior. Base on the model, series solution and quasi-liear solution was compared. Neglecting the component of the convection term in one or two normal direction and solving the momentum equation, the influence of the component of the convection term in each normal direction was analyzed. Results indicate that the series solution is almost the same as that of the quasi-liear solution; The convection term in the n direction has the most important influence on the velocity.

关 键 词：水平刻槽管 升膜 对流项 级数解 

分 类 号：TK124[动力工程及工程热物理—工程热物理]