| 下降液膜流动模型及稳定性分析 |
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| 引用本文： | 钱焕群,胡志华,孙贺东,周芳德. 下降液膜流动模型及稳定性分析[J]. 热能动力工程, 2003, 18(1): 82-85 |
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| 作者姓名： | 钱焕群 胡志华 孙贺东 周芳德 |
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| 作者单位： | 西安交通大学多相流国家重点实验室,陕西西安,710049;西安交通大学多相流国家重点实验室,陕西西安,710049;西安交通大学多相流国家重点实验室,陕西西安,710049;西安交通大学多相流国家重点实验室,陕西西安,710049 |
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| 基金项目： | 国家 973基金资助项目 (G19990 2 2 30 8) |
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| 摘 要： | 建立了自由下降液膜流动的完备的数学模型。采用边界层理论对模型进行分析简化，得到液膜流动的二阶边界层模型，并对二阶界层模型进行稳定性分析，计算获得下降液膜波的增长率和中性稳定曲线，将计算结果与其它模型的计算结果进行了比较，证实了二阶边界层模型具有更好的预测效果，其形式便于作进一步的非线性分析。
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| 关 键 词： | 液膜 边界层 波 增长率 中性稳定 |
| 文章编号： | 1001-2060(2003)01-0082-04 |
Model of a Falling Liquid-film Flow and an Analysis of Its Stability |
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| QIAN Huan-qun,HU Zhi-hua,SUN He-dong,et al. Model of a Falling Liquid-film Flow and an Analysis of Its Stability[J]. Journal of Engineering for Thermal Energy and Power, 2003, 18(1): 82-85 |
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| Authors: | QIAN Huan-qun HU Zhi-hua SUN He-dong et al |
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| Abstract: | A sound mathematical model has been set up for the film flow of a free falling liquid. Boundary layer theory was used to analyze and simplify the model, securing a second-order boundary-layer model for the liquid-film flow. A stability analysis of this model was performed. Through calculations the wave growth rate of the falling liquid film and a neutral stability curve were obtained. The comparison of the calculation results with those of other models has confirmed that the second-order boundary model offers better prediction effectiveness and its form is more suited for performing further a nonlinear analysis. |
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| Keywords: | liquid film boundary layer wave growth rate neutral stability |
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