带涡流发生器百叶窗翅片对流换热特性研究
CONVECTION HEAT TRANSFER CHARACTERISTICS OF LOUVERED FINS WITH VORTEX GENERATOR
曹侃 1谭泽资 1于波文 1袁耀华 1康志伟 1梁家星1
作者信息
- 1. 中原工学院能源与环境学院,郑州 450001
- 折叠
摘要
为改善车用百叶窗翅片换热器空气侧换热性能,提出一种带涡流发生器百叶窗翅片结构.采用数值模拟方法计算出新型翅片与传统翅片在不同雷诺数(Re)下的传热因子j,阻力因子f和综合性能因子JF,分析了两种翅片的流动和换热特性.结果表明:在Re为100～500时,与传统翅片相比,带涡流发生器翅片的传热因子j增加了 2.9%～4.0%,阻力因子f上升了 1.6%～2.0%,综合因子JF提高了 2.2%～3.4%,因此带涡流发生器换热器换热性能优于传统百叶窗换热器.
Abstract
In order to improve the heat transfer performance of the air side of the louvered heat exchanger for new energy vehicle air conditioning,a new louvered fin structure with eddy current generator is proposed.Using numerical simulation methods to calculate the heat transfer factor j,resistance factor f,and comprehensive performance factor JF of the new louver fin and the traditional heat exchanger fin at different Reynolds numbers(Re),and the flow and heat transfer characteristics of the two groups of fins are comparatively analyzed.The results show that the heat transfer factor j increases by 2.9%～4.0%,the resistance factor f rises by 1.6%～2.0%,and the comprehensive factor JF improves by 2.2%～3.4%for the louver fins with vortex generator compared with the conventional fins at Re of 100～500,so the heat transfer performance of the heat exchanger with vortex generator is superior to that of the conventional louvered heat exchanger.
关键词
百叶窗换热器/数值模拟/涡流发生器/强化传热Key words
louvered heat exchanger/numerical simulation/vortex generator/enhanced heat transfer引用本文复制引用
出版年
2024
NETL
NSTL
万方数据