| 平面蒸发薄液膜的稳定性分析 |
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| 引用本文： | 张丽春,马同泽,葛新石.平面蒸发薄液膜的稳定性分析[J].中国科学技术大学学报,2002,32(5):618-626. |
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| 作者姓名： | 张丽春 马同泽 葛新石 |
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| 作者单位： | 1. 中国科学技术大学热科学和能源工程系,安徽合肥,230027
2. 中国科学院工程热物理研究所,北京2706信箱,100080 |
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| 基金项目： | 国家自然科学基金资助项目 (No .5 9995 5 5 0 4 ) |
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| 摘 要： | 固体表面上形成的蒸发薄液膜，对微细空间内的传热有重要强化作用。论文对平面蒸发薄液膜的传热传质过程建立了物理模型，从汽－液界面上的边界条件得到无量纲液膜厚度随时间变化的发展方程。还探讨了液膜的稳定性特性。这种稳定性特性对热边界条件不敏感，但对工质扩散常数、界面温度梯度（Marangoni效应）的依赖较大。
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| 关 键 词： | 平面蒸发薄液膜 稳定性 发展方程 相变传热 工质扩散常数 界面温度梯度 |
| 文章编号： | 0253-2778(2002)05-0618-09 |
Analysis of the Stability of Evaporating Thin Films on Flat |
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| ZHANG Li chun ,MA Tong ze ,GE Xin shi.Analysis of the Stability of Evaporating Thin Films on Flat[J].Journal of University of Science and Technology of China,2002,32(5):618-626. |
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| Authors: | ZHANG Li chun MA Tong ze GE Xin shi |
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| Institution: | ZHANG Li chun 1,MA Tong ze 2,GE Xin shi 1 |
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| Abstract: | The thin liquid film formed on a solid surface can significantly enhance the heat transfer of micro scale. A physical model describing the heat and mass transfer processes of the evaporating thin film is set up and an evolution equation which shows the development regularity of dimensionless film thickness with time is obtained from the liquid vapor interfacial conditions. The stability characteristics of thin film are discussed. It shows that the stability characteristics rely less on thermal boundary conditions but can be greatly affected by the Hamaker constant of working fluid and the interfacial temperature gradient, which brings Marangoni phenomenon. |
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| Keywords: | evaporating thin film stability characteristics evolution equation |
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