摘要A mathematical model is developed to investigate the dynamics of vapor bubble growth in a thin liquid film, movement of the interface between two fluids and the surface heat transfer characteristics. The model takes into account the effects of phase change between the vapor and liquid, gravity, surface tension and viscosity. The details of the multiphase flow and heat transfer are discussed for two cases: (1) when a water micro-droplet impacts a thin liquid film with a vapor bubble growing and (2) when the vapor bubble grows and merges with the vapor layer above the liquid film without the droplet impacting. The development trend of the interface between the vapor and liquid is coincident qualitatively with the available literature, mostly at the first stage. We also provide an important method to better understand the mechanism of nucleate spray cooling.
Abstract：A mathematical model is developed to investigate the dynamics of vapor bubble growth in a thin liquid film, movement of the interface between two fluids and the surface heat transfer characteristics. The model takes into account the effects of phase change between the vapor and liquid, gravity, surface tension and viscosity. The details of the multiphase flow and heat transfer are discussed for two cases: (1) when a water micro-droplet impacts a thin liquid film with a vapor bubble growing and (2) when the vapor bubble grows and merges with the vapor layer above the liquid film without the droplet impacting. The development trend of the interface between the vapor and liquid is coincident qualitatively with the available literature, mostly at the first stage. We also provide an important method to better understand the mechanism of nucleate spray cooling.
TAO Yu-Jia;HUAI Xiu-Lan;LI Zhi-Gang. Numerical Simulation of Vapor Bubble Growth and Heat Transfer in a Thin Liquid Film[J]. 中国物理快报, 2009, 26(7): 74701-074701.
TAO Yu-Jia, HUAI Xiu-Lan, LI Zhi-Gang. Numerical Simulation of Vapor Bubble Growth and Heat Transfer in a Thin Liquid Film. Chin. Phys. Lett., 2009, 26(7): 74701-074701.
[1] Rini D P et al 2002 J. Heat Transfer 124 63 [2] Selvam R P, Lin L and Ponnappan R 2006 InternationalJournal of Heat and Mass Transfer 49 4265 [3] Selvam R P and Ponnappan R 2004 Proceedings of the15th Annual Thermal and Fluids Analysis Workshop (Pasadena, CA 30August--3 September 2004) [4] Zhang S J, Wu C J and Wang H M 2006 J. HohaiUniversity (Natural Sciences) 34 655 (in Chinese) [5] Xie M Z, Han W, Liu H and Wang D Q 2006 J. DanlianUniversity of Technology 46 340 (in Chinese) [6] Yuan M H, Yang Y H, Li T S and Hu Z H 2007 J. Engin.Thermophys. 28 961 (in Chinese) [7] Son G and Dhir V K 1998 J. Heat Transfer 120183
2009, Vol. 26 
