Heat transfer to falling liquid films and film breakdown—I: Subcooled liquid films
Heat transfer to falling liquid films and film breakdown—I: Subcooled liquid films
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DOI：
10.1016/0017-9310(78)90212-0
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发表时间：
1978-02
影响因子：
5.2
通讯作者：
T. Fujita;Tatsuhiro Ueda
中科院分区：
文献类型：
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作者：
T. Fujita;Tatsuhiro Ueda
对在均匀加热的立管外侧向下流动的过冷水膜的传热系数和膜破裂热通量进行了实验。针对每种层流和湍流膜流导出了液膜的畸变参数，该参数是表面张力的允许差与均匀膜流的动态压力的比率。实验数据表明，当通过增加热通量使参数达到恒定值时，薄膜击穿发生在变形薄膜的薄区域。还提出了评估胶片畸变的简单分析。
Experiments are described on heat-transfer coefficient and film breakdown heat flux for subcooled water films flowing downwards on outside of a vertical tube uniformly heated. A distortion parameter of liquid films, which is a ratio of an allowable difference in surface tension to the dynamic pressure of uniform film flow, is derived for each laminar and turbulent film flow. Experimental data show that when the parameter attains a constant value by increasing heat flux, the film breakdown takes place in a thin region of the distorted film. A simple analysis is also presented for evaluating film distortion.