翼型翅片对管片散热器散热性能的影响  

Influence of Airfoil Fin on the Heat Transfer Performance of Tube-and-fin Radiator

作　　者：程亮 刘佳鑫 王宝中[1] 钱学成 王鑫阁 CHENG Liang;LIU Jia-xin;WANG Bao-zhong;QIAN Xue-cheng;WANG Xin-ge(College of Mechanical Engineering,North China University of Science and Technology,Tangshan 063210,China;School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华北理工大学机械工程学院,唐山063210 [2]华中科技大学能源与动力工程学院,武汉430074

出　　处：《科学技术与工程》2020年第3期1163-1170,共8页Science Technology and Engineering

基　　金：湖北省技术创新专项基金(2016AAA045);博士科研启动项目(28406999);国家科技支撑计划(2013BAF07B04);华北理工大学研究生创新项目(2019S30)。

摘　　要：针对恶劣环境下工程车辆散热能力不足的问题,提出一种翼型翅片的管片散热器改善方案。首先,采用Fluent 15.0对散热器原始模型的单元体进行数值建模分析,并与试验数据对比验证仿真的可行性;其次,采用相同仿真条件对翼型翅片散热器进行仿真分析;然后分别研究翼型方案、类型和位置对压力损失和换热系数的影响;最后,通过田口法设计正交试验,寻找最优的翼型翅片配置组合。结果表明:仿真结果与试验数据吻合较好;在进气口速度为12 m/s时,翼型翅片比原始翅片综合评价因子提高5.73%;翼型种类和翼型方案对压力损失与换热系数的影响较大,翼型的移动位置对压力损失和换热系数几乎没有影响;采用方案2、NACA0015翼型和左移2 mm的配置组合时的综合评价因子最大,散热性能改善最明显。研究结果为翼型翅片在工程车辆管片散热器性能改善方面提供了经验认知。Aiming at the problem of insufficient heat dissipation capacity of engineering vehicles in harsh environments,an improved scheme of airfoil radiators with airfoil fins is proposed.Firstly,the unit model of the original model of the radiator is numerically analyzed by Fluent 15.0,and the feasibility of the simulation is verified by comparison with the experimental data.Secondly,the simulation analysis of the airfoil fin radiator is carried out under the same simulation conditions.Then the effects of airfoil scheme,type and location on pressure loss and heat transfer coefficient is studied.Finally,the orthogonal test is designed by the Taguchi method to find the optimal airfoil fin configuration combination.The results show that the simulation results are in good agreement with the experimental data.At the inlet velocity of 12 m/s,the integrated evaluation factor of the airfoil fins is 5.73%higher than that of the original fins.Airfoil type and airfoil scheme have a great influence on the pressure loss and heat transfer coefficient,while the moving position of airfoil has almost no influence on the pressure loss and heat transfer coefficient.When the combination of scheme 2,NACA0015 airfoil and left shift 2 mm is adopted,the comprehensive evaluation factor is the largest,and the heat dissipation performance is most obvious.The results provide the experience and cognition for the improvement of the thermal performance of the vehicle tube-and-fin radiator.

关 键 词：翼型翅片 工程车辆 热管理 CFD数值仿真 综合评价因子 

分 类 号：TU603[建筑科学—建筑技术科学]