| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Numerical Simulation of Vapor Bubble Growth and Heat Transfer in a Thin Liquid Film |
| TAO Yu-Jia1,2, HUAI Xiu-Lan1, LI Zhi-Gang1 |
| 1Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 1001902Graduate School of Chinese Academy of Sciences, Beijing 100180 |
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| Cite this article: |
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TAO Yu-Jia, HUAI Xiu-Lan, LI Zhi-Gang 2009 Chin. Phys. Lett. 26 074701 |
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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.
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| Keywords:
47.11.-j
47.55.D-
44.35.+c
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Received: 07 October 2008
Published: 02 July 2009
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| PACS: |
47.11.-j
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(Computational methods in fluid dynamics)
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47.55.D-
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(Drops and bubbles)
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44.35.+c
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(Heat flow in multiphase systems)
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[7] Son G and Dhir V K 1998 J. Heat Transfer 120183 |
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