| 水平螺旋槽管降膜流动和传热特性研究 |
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| 引用本文： | 李艳,张书超,梅宁,赵杰. 水平螺旋槽管降膜流动和传热特性研究[J]. 热科学与技术, 2011, 10(2): 95-102. DOI: 10.3969/j.issn.1671-8097.2011.02.001 |
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| 作者姓名： | 李艳 张书超 梅宁 赵杰 |
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| 作者单位： | 中国海洋大学,热工实脸室,山东,青岛,266100 |
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| 基金项目： | 国家自然科学基金资助项目(50806069&51076146) |
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| 摘 要： | 对水平螺旋槽管壁面降膜形成及传热特性进行了理论和实验研究,得到了液膜厚度及速度的解析及数值解.结果表明,降膜液膜特性主要受槽道结构和液膜表面张力控制.管壁温度沿周向向下逐渐升高,而且在定热流密度下保持不变,而液膜温度则沿周向逐渐上升.相比光管,螺旋槽管降膜具有更高的传热系数.
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| 关 键 词： | 降膜 螺旋槽管 强化传热 |
Studies on flow and heat transfer of liquid falling film on helix fluted horizontal tube |
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| LI Yan,ZHANG Shu-chao,MEI Ning,ZHAO Jie. Studies on flow and heat transfer of liquid falling film on helix fluted horizontal tube[J]. Journal of Thermal Science and Technology, 2011, 10(2): 95-102. DOI: 10.3969/j.issn.1671-8097.2011.02.001 |
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| Authors: | LI Yan ZHANG Shu-chao MEI Ning ZHAO Jie |
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| Affiliation: | LI Yan,ZHANG Shu-chao,MEI Ning,ZHAO Jie(College of Engineering,Ocean University of China,Qingdao 266100,China) |
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| Abstract: | Theoretical and experimental studies of the formation and heat transfer of falling liquid film in helix fluted channel on a horizontal tube are presented.Analytical and numerical solutions of velocity distribution and the film thickness are obtained.The heat transfer properties of the falling film formed on the surface of horizontal spirally fluted tube are investigated theoretically and experimentally.The results show that the liquid film profile mainly depends upon the surface geometry of the channel and ... |
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| Keywords: | falling liquid film helix fluted tube heat transfer |
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