Liu R, Kabov O A
Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Jun;85(6 Pt 2):066305. doi: 10.1103/PhysRevE.85.066305. Epub 2012 Jun 5.
The problem of a two-layer system consisting of a horizontal liquid layer in contact with its own vapor is considered. The liquid layer is bounded by a rigid wall from below, and phase change can occur at the interface. The flow of the vapor phase is driven by a constant pressure gradient in the streamwise direction. We have taken into account the effects of buoyancy, thermocapillarity, evaporation, and the dynamics of the vapor phase. A full linear stability analysis is performed using a Chebyshev spectral method. The influences of evaporation effect and the interfacial shear on the Rayleigh instability and the Marangoni instability have been studied. The results show that both the evaporation and the interfacial shear play important roles in the stability of the system.
考虑一个由与自身蒸汽接触的水平液体层组成的两层系统的问题。液体层下方由刚性壁界定，且在界面处会发生相变。气相的流动由流向方向上的恒定压力梯度驱动。我们考虑了浮力、热毛细作用、蒸发以及气相动力学的影响。使用切比雪夫谱方法进行了完整的线性稳定性分析。研究了蒸发效应和界面剪切对瑞利不稳定性和马兰戈尼不稳定性的影响。结果表明，蒸发和界面剪切在系统稳定性中都起着重要作用。
