| 不同排列方式下三角翼波纹翅片管换热器的换热性能比较 |
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| 引用本文： | 田丽亭,何雅玲,楚攀,雷勇刚. 不同排列方式下三角翼波纹翅片管换热器的换热性能比较[J]. 动力工程, 2009, 29(1) |
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| 作者姓名： | 田丽亭 何雅玲 楚攀 雷勇刚 |
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| 作者单位： | 西安交通大学,能源与动力工程学院,动力工程多相流国家重点实验室,西安,710049 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 应用三维数值模拟的方法对加装三角翼涡发生器的波纹翅片管换热器的流动换热特性进行了研究.3排换热圆管按顺排和叉排2种方式排列.结果表明:三角翼产生的纵向涡包括1个主涡和1个角涡.顺排布置时,纵向涡不但改善了尾迹区的换热,同时还大大强化了三角翼下游管排壁面的换热;叉排布置时,纵向涡在遇到后一个波谷时很快被抑制,换热的强化主要作用于尾迹区.ReD=3000时,与无三角翼的波纹翅片相比,三角翼波纹翅片的j、f,因子在顺排和叉排布置中分别增加了15.4%、10.5%和13.1%、7.0%.在不同排列方式下,三角翼产生的纵向涡均提高了波纹翅片管换热器的换热性能.
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| 关 键 词： | 换热器 三角翼波纹翅片 纵向涡 叉排 顺排 换热性能 |
Heat Transfer Performance Comparison of Wavy Finned Tube Heat Exchanger with Delta Winglets Under Different Arrays |
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| TIAN Li-ting,HE Ya-ling,CHU Pan,LEI Yong-gang. Heat Transfer Performance Comparison of Wavy Finned Tube Heat Exchanger with Delta Winglets Under Different Arrays[J]. Power Engineering, 2009, 29(1) |
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| Authors: | TIAN Li-ting HE Ya-ling CHU Pan LEI Yong-gang |
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| Affiliation: | State Key Lab of Multiphase Flow in Power Engineering;School of Energy & Power Engineering;Xi'an Jiaotong University;Xi'an 710049;China |
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| Abstract: | 3D numerical simulations were performed to investigate the flow and heat transfer characteristics of the wavy finned-tube heat exchanger with deltawing vortex generators.Three rows of round tubes with in-lined or staggered arrangements are studied.Results show that the longitudinal vortex generated by the delta winglet includes a main vortex and a corner vertex.For inlined array,the longitudinal vortices not only improve the heat transfer of the wake region,but also greatly enhance the heat transfer of the ... |
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| Keywords: | heat exchanger wavy fin with delta winglet longitudinal vortices in-lined array staggered array heat transfer performance |
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