汽车工程

汽车工程 ›› 2020, Vol. 42 ›› Issue (1): 114-120.doi: 10.19562/j.chinasae.qcgc.2020.01.017

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某型SUV空空中冷器内部流动换热研究*

邱飒蔚1,2, 王震虎1,2, 廖斌3, 夏二立1,2, 李落星1,2   

  1. 1.湖南大学,汽车车身先进设计制造国家重点实验室,长沙 410082;
    2.湖南大学机械与运载工程学院,长沙 410082;
    3.重庆长安汽车欧尚研究院,重庆 400023
  • 收稿日期:2018-11-14 发布日期:2020-01-21
  • 通讯作者: 李落星,教授,博士生导师,E-mail:llxly2000@163.com
  • 基金资助:
    *国家重点研发计划项目(2016YFB0101700)和国家自然科学基金重点项目(U1664252)资助

Study on the Internal Flow and Heat Transferin the Air-to-Air Intercooler of a SUV

Qiu Sawei1,2, Wang Zhenhu1,2, Liao Bin3, Xia Erli1,2, Li Luoxing1,2   

  1. 1.Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha 410082;
    2.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082;
    3.Changan Oushang Automobile Institute, Chongqing 400023
  • Received:2018-11-14 Published:2020-01-21

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摘要： 采用三维双流模型对某SUV的空空中冷器进行了内部流动换热研究,分析不同行驶工况下中冷器冷流与热流内部的速度场、温度场和压力场,有效预测了内部流场涡流的存在和局部高低温度区与压力区的分布。通过对比一维、三维、一维/三维仿真温度结果和试验验证表明:在3种仿真分析方法中,一维/三维联合仿真精度最高,三维与一维/三维温度分布结果较为接近,且三维仿真结果与试验相对误差在5％以内,验证了中冷器双流模型仿真的可行性,为发动机进气效率提高与中冷器内部换热研究提供参考。

关键词: 空空中冷器, 流动换热, 双流模型, 一维/三维仿真

Abstract: A study on the internal flow and heat transfer in an air-to-air intercooler of a SUV is conducted by using 3D dual-stream model, the velocity field, temperature field and pressure field in the internal cold and heat flows of the intercooler under different driving conditions are analyzed, and the existence of eddy in internal flow field and the distribution of local high and low temperature and pressure areas are effectively predicted. The comparison results of the temperatures obtained by 1D, 3D, 1D/3D simulations and test verification show that among three simulation schemes, the 1D/3D co-simulation has highest accuracy, the results of 3D and 1D/3D simulations on temperature distribution are relatively close, and the relative error between 3D simulation and test is within 5%. The study verifies the feasibility of simulation with the dual-stream model for intercooler, providing references for enhancing engine intake efficiency and the research on the internal heat-transfer of intercooler

Key words: air-to-air intercooler, flow and heat transfer, dual stream model, 1D/3D simulation