| 低温液体核态流动沸腾传热的机理模型 |
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| 引用本文： | 李祥东,汪荣顺,石玉美.低温液体核态流动沸腾传热的机理模型[J].低温与超导,2006,34(3):168-171,175. |
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| 作者姓名： | 李祥东 汪荣顺 石玉美 |
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| 作者单位： | 上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030 |
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| 摘 要： | 对核态沸腾表面上的各种传热机理进行了分析和量化,建立了低温液体核态流动沸腾传热的机理模型,并将该模型纳入双流体模型实现了数值求解,数值预测的结果详细地反映出了壁面上各参数随流动的变化情况。该机理模型的计算结果表明,气泡挣脱后液体与过热壁面间的激冷效应是导致壁面上各参数在OSV处突变的根本原因。
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| 关 键 词： | 低温液体 核态沸腾 传热机理 双流体模型 数值预测 |
| 修稿时间： | 2006年1月19日 |
Mechanism model for nucleate boiling flow of cryogenic liquids |
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| Li Xiangdong,Wang Rongshun,Shi Yumei.Mechanism model for nucleate boiling flow of cryogenic liquids[J].Cryogenics and Superconductivity,2006,34(3):168-171,175. |
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| Authors: | Li Xiangdong Wang Rongshun Shi Yumei |
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| Abstract: | Heat transfer mechanisms involved in nucleate boiling were analyzed and quantified.A mechanism model dealing with partitioning heat flux from the wall during boiling flow of cryogenic liquids was proposed.The new model was then incorporated in the two-fluid model and numerical computation of boiling flow of nitrogen in a vertical tube is performed.The numerical results show that the jump of wall temperature at OSV is mainly due to the quenching heat flux. |
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| Keywords: | Cryogenic liquids Nucleate boiling Heat transfer mechanisms Two-fluid model Numerical prediction |
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