基于双因素优选法和Taguchi法的涡流发生器结构及布置优化  

Optimisation of Vortex Generator Structure and Arrangement Based on Two-factor Preference Method and Taguchi Method

作　　者：武巧 陈刚 蒋胜蓝 文帅 刘雅鸣 WU Qiao;CHEN Gang;JIANG Sheng-lan;WEN Shuai;LIU Ya-ming(School of Civil Engineering,University of South China,Hengyang 421000,China)

机构地区：[1]南华大学土木工程学院,衡阳421000

出　　处：《科学技术与工程》2024年第29期12567-12575,共9页Science Technology and Engineering

基　　金：湖南省重点研发计划(2020WK2012)。

摘　　要：为提高换热器性能,在雷诺数为1 000~4 400时,通过数值模拟方法研究新型双面交错排布式的涡流发生器的开孔方案及数量变化对翅片管式换热器传热和流阻特性的影响。采用双因素优选法设计涡流发生器结构,通过Taguchi法对布置位置进行优化设计,利用换热因子、摩擦因子和综合性能评价系数等指标对不同方案下翅片管式换热器的热工性能进行比较。结果表明:与单面布置涡流发生器的方式相比,双面布置方式综合性能更佳;涡流发生器开孔数量增多并不能使得摩擦因子持续下降,靠近涡流发生器尾端且仅开一个孔时综合性能较优;涡流发生器在第四排管布置与否对换热及流阻的影响不大,综合性能差异不大,但是随着涡流发生器继续减少,综合性能出现较大衰减。In order to improve the performance of the heat exchanger,the effect of the opening scheme and the number of the new double-sided staggered vortex generator on the heat transfer and flow resistance characteristics of the finned tube heat exchanger was studied by numerical simulation method when the Reynolds number was 1 000~4 400.The structure of vortex generator was designed by two-factor optimization method,and the location was optimized by Taguchi method.The thermal performance of finned tube heat exchangers under different schemes was compared by heat transfer factor,friction factor and comprehensive performance evaluation coefficient.The results show that compared with the single-sided arrangement of vortex generators,the double-sided arrangement has better comprehensive performance.The increase in the number of holes in the vortex generator does not lead to a continuous decrease in the friction factor,and the comprehensive performance is better when the vortex generator is located close to the end of the vortex generator and only one hole is opened.The arrangement of the vortex generator in the fourth row of tubes has little effect on the heat transfer and flow resistance,and there is little difference in the comprehensive performance,but as the vortex generator continues to be reduced,there is a large attenuation of the comprehensive performance.

关 键 词：翅片管式换热器 涡流发生器 强化传热 流阻特性 数值模拟 

分 类 号：TK172[动力工程及工程热物理—热能工程]