| 细长竖直管路内自然对流沸腾临界热通量研究 |
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| 引用本文： | 刘振华,陈玉明. 细长竖直管路内自然对流沸腾临界热通量研究[J]. 工程热物理学报, 1997, 0(6) |
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| 作者姓名： | 刘振华 陈玉明 |
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| 作者单位： | 上海交通大学能源工程系!上海，200030，上海交通大学能源工程系!上海，200030 |
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| 基金项目： | 国家教委归国留学人员科研启动资金 |
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| 摘 要： | l引言管内或窄小流路内的自然对流沸腾CHF的研究比较少。文献［1～41对水及氟里昂系等液体进行了实验，在Kutataladze【’］的池内沸腾无量式基础上，提出如下经验公式当L／De－－＋0时上式退化为池内沸腾公式。式中qm。x是临界热通量；Hi。是蒸发潜热；。是汽液界面张力；尸l和p。分别是液体和蒸汽的密度；9是重力加速度；c是实验常数；不同研究者之间相差很大。当L／De较大时各经验公式的计算值会相差l～2倍。式（1）没有任何物理机理的支持，仅以J和L／De之间的无量纲关系对实验值进行统计整理，对物性的实际影响、De独立于L／De的…
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| 关 键 词： | 自然对流沸腾 临界热通量 细长管路 |
STUDIES OF CRITICAL HEAT FLUX DURING NATURAL CONVECTIVE BOILING IN VERTICAL TUBES |
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| LIU Zhenhua ,CHEN Yuming. STUDIES OF CRITICAL HEAT FLUX DURING NATURAL CONVECTIVE BOILING IN VERTICAL TUBES[J]. Journal of Engineering Thermophysics, 1997, 0(6) |
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| Authors: | LIU Zhenhua CHEN Yuming |
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| Abstract: | Studies have been made for the critical heat flux (CHF) during natural convective boiling on uniformly heated vertical tubes submerged in saturated liquids. By adopting a mixed flow model in tube, a generalized approximate formula was set up which was found to agree well with the CHF data of tubes and annular tubes submerged in water or other liquids undervarious pressure conditions. |
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| Keywords: | critical heat flux natural convective boiling narrow space |
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