水冻结/熔融过程中翅片数量的优化
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摘要
基于ANSYS/Fluent软件,针对某外径200 mm的翅片管进行了数值传热分析,得到了不同翅片数量下随时间变化的液体组分云图以及翅片管中相变材料(PCM)完全融化的温度分布云图。结果显示:当翅片数量大于10时,传热速率明显下降,且翅片管的加工难度变大,因此最优翅片数选择在4～10较为合理。
Based on ANSYS/Fluent software,numerical heat transfer analysis was performed on a finned tube with an outer diameter of 200 mm,and the number of fins was obtained. A cloud map of the liquid component as a function of time and a temperature profile of the complete melting of the phase change material( PCM) in the finned tube. The results show that when the number of fins is greater than 10,the heat transfer rate decreases significantly,and when the number of fins is more than 10,the processing difficulty of the corresponding heat pipe becomes larger,so it is more reasonable to select the optimal number of fins between 4 ～ 10. It has important guiding significance for the engineering design that guides the heat transfer of the heat pipe.
Based on ANSYS/Fluent software,numerical heat transfer analysis was performed on a finned tube with an outer diameter of 200 mm,and the number of fins was obtained. A cloud map of the liquid component as a function of time and a temperature profile of the complete melting of the phase change material( PCM) in the finned tube. The results show that when the number of fins is greater than 10,the heat transfer rate decreases significantly,and when the number of fins is more than 10,the processing difficulty of the corresponding heat pipe becomes larger,so it is more reasonable to select the optimal number of fins between 4 ～ 10. It has important guiding significance for the engineering design that guides the heat transfer of the heat pipe.
引文
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[2]李程程.液滴撞击不同翅片管表面动态特性的实验研究[D].大连:大连理工大学,2012.
[3]吴峰,林梅,田林,等.纵向内翅片管对流换热特性的实验研究及数值模拟[J].化工学报,2005,56(11):2065-2068.
[4]吴峰,林梅,田林,等.纵向带突起内翅片管强化传热研究[J].热能动力工程,2006,21(3):283-286.
[5]田林,王秋旺,谢公南,等.三种内翅片管管内流动与换热特性[J].化工学报,2006,57(11):2543-2548.
[6]王云雷,何光艳,张保生.非对称翅片管式换热器管外对流传热强化实验研究[J].热力发电,2015(1):34-38.
[7]吴俊岐,侯保林.基于FLUENT的磁流变阻尼器阻尼特性分析[J].兵器装备工程学报,2017(11):142-145.
[8]王军,石磊.基于Fluent的冰塞融化模拟[J].山西建筑,2009,35(15):362-363.
[9]蒋翔,李晓欣,朱冬生.几种翅片管换热器的应用研究[J].化工进展,2003,22(2):183-186.
[10]李俊华.不同材料翅片管换热器性能的数值模拟研究[D].广州:广州大学,2014.