波纹竖壁上低雷诺数饱和蒸发液膜流动的研究  

FLOW OF A LIQUID FILM AT LOW REYNOLDS NUMBER DOWN ON A VERTICAL WAVY PLATE WITH AN INFLUENCE OF SATURATED EVAPORATION

作　　者：师晋生[1] 

机构地区：[1]天津科技大学机械工程学院,天津300222

出　　处：《工程热物理学报》2009年第10期1726-1728,共3页Journal of Engineering Thermophysics

基　　金：天津市应用基础研究计划项目(No.07JCYBJC01300)

摘　　要：对饱和蒸发状态下的低雷诺数的液膜在小波幅正弦型波纹壁面上的自由降落进行了理论分析。通过无量纲化、引入流函数、采用摄动展开对数学模型进行处理,得到了这种情况下液膜流动的分析模型,计入了饱和蒸发压力的影响,得到了近似分析解.讨论了壁面波纹的波幅、波数、液膜表面张力和蒸发压力对液膜波动的影响。An analytical research on a free falling of a liquid film at low Reynolds number down on a vertical plate with a small sine-shaped wavy surface with the effect of saturated evaporation on the free surface of film was conducted. An approximate analytic model was presented by applying perturbation expanding to the governing equations of the flow in the form of dimensionless stream function. With the solution obtained, effects of the amplitude and wave number of the plate surface, the film surface tension and the evaporative reactive pressure on the film were discussed.

关 键 词：液膜 波纹壁面 流动 饱和蒸发 

分 类 号：TK124[动力工程及工程热物理—工程热物理]