摘要
该文以边界层理论为基础,考虑完整的边界条件,研究了液膜在蒸发、等温和冷凝状态下的线性二维表面波扰动的空间稳定性,对两种不同类型扰动的稳定性进行了理论研究,给出了波数,空间增长率以及波速的变化趋势,分析了雷诺数、倾角、热毛细力以及在蒸发、等温和冷凝三种状态对液膜稳定性的影响。
The spatial evolution formulation of the two-dimensional waves of the evaporating or isothermal or condensing liquid films falling down an inclined wall is established for the film thickness with the collocation method based on the boundary layer theory and complete boundary conditions. Calculation results illustrate the dependence of spatial growth factor, wave velocity and wave number on angular frequency by sets of curves. It is demonstrated that there are two different modes of waves (mode a and mode b) in spatial evolution. The effects of the Reynolds number, inclina-tion angle, thermocapillary and evaporation or condensation on flow stability are discussed.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第12期26-31,共6页
Proceedings of the CSEE
基金
国家教育部博士点专项基金项目(1999007902)。
