重力热管基于VOF模型的传热特性研究

doi:10.3969/j.issn.2095-2198.2023.03.009

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摘要

采用Fluent软件选用VOF模型，并加载自定义函数（UDF），实现重力热管内部的相变传热过程，对重力热管进行数值模拟分析.研究结果表明：Fluent可以将重力热管内部相变过程较好地呈现出来.当加热功率为60 W时，换热系数达到最大值；当加热功率继续增加到80 W时，换热系数逐渐下降.当充液率在0.20~0.24范围时，随着充液率的增加，等效对流换热系数也增加；当充液率在0.24~0.32时，等效对流换热系数逐渐降低；充液率为0.24时，等效对流换热系数最大.当倾角在30°~60°时，等效对流换热系数随倾角增大而增大；当倾角在60°~90°时，等效对流换热系数随倾角增大而减小；倾角为60°时等效对流换热系数最大.

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关键词: 重力热管')" href="#">

重力热管 VOF模型数值模拟对流换热系数

Abstract: Fluent software is used to select VOF model and load user-defined function(UDF)to realize the phase change heat transfer process in the gravity heat pipe,and the numerical simulation analysis of gravity heat pipe is carried out.The results show that fluent can better present the phase transformation process in the gravity heat pipe;when the heating power is 60 W,the heat transfer coefficient reaches the maximum value;when the heating power continues to increase to 80 W,the heat transfer coefficient gradually decreases;when the liquid filling rate is in the range of 0.20 ~ 0.24,the equivalent convective heat transfer coefficient also increases with the increase of liquid filling rate;when the liquid filling rate increases to 0.32,the equivalent convection heat transfer coefficient increases.When the liquid filling rate is 0.24,the equivalent convective heat transfer coefficient is the highest.The equivalent convective heat transfer coefficient increases with the increase of the inclination angle in the range of 30° to 60° and decreases when the inclination angle increases to 90° and the equivalent convective heat transfer coefficient reaches the maximum when the inclination angle is 60°.

Key words: gravity heat pipe')" href="#">

gravity heat pipe VOF model numerical simulation convection heat transfer coefficient

出版日期: 2023-06-30 发布日期: 2024-03-11 整期出版日期: 2023-06-30

ZTFLH:

TK172.4

基金资助:

国家自然科学基金(11672189)

通讯作者: 王立鹏

作者简介: 战洪仁（1964—），女，山东蓬莱人，教授，博士，主要从事强化换热与节能技术的研究.

引用本文:

战洪仁, 于胜利, 王立鹏, 才月, 吴霖.

重力热管基于VOF模型的传热特性研究 [J]. 沈阳化工大学学报, 2023, 37(3): 260-265.
ZHAN Hongren, YU Shengli, WANG Lipeng, CAI Yue, WU Lin.

Study on Heat Transfer Characteristics of Gravity . Journal of Shenyang University of Chemical Technology, 2023, 37(3): 260-265.

链接本文:

https://xuebao.syuct.edu.cn/CN/10.3969/j.issn.2095-2198.2023.03.009 或 https://xuebao.syuct.edu.cn/CN/Y2023/V37/I3/260

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