斜射流对壁面传热特性影响的仿真分析
赵波1,2，唐万松1，王翼鹏1，刘相宜1，金汝宁1
（1.四川大学 机械工程学院，四川 成都 610065；2.四川省丘区山区智能农机装备创新中心，四川 德阳 618000）
摘要：冲击射流是一种传热效率极高的方式，采用数值分析方法模拟了单束射流不同倾角条件下的冲击冷却过程，定量讨论了射流流场对壁面传热特性的影响，发现射流流速与滞止区和壁面射流区的传热性能具有强相关性。为此设计了组合式射流冲击冷却模型，仿真验证发现，在多喷嘴协同作用下，组合式射流继承了单束直射流和斜射流的优点，在保证滞止区传热效率较高的同时，有效地提高了射流下游的传热效率，并使壁温分布更加均匀。
关键词：射流；冲击冷却；斜射流；组合式射流；数值分析
中图分类号：O358 文献标志码：A doi：10.3969/j.issn.1006-0316.2022.01.001
文章编号：1006-0316 (2022) 01-0001-08
Numerical Study on Effects of Oblique Impinging Jet on the Surface Heat Transfer
ZHAO Bo1,2，TANG Wansong1，WANG Yipeng1，LIU Xiangyi1，JIN Runing1
( 1. School of Mechanical Engineering, Sichuan University, Chengdu 610065, China; 2. Sichuan Provincial Collaborative Innovation Center for Intelligent Agricultural Machinery in Hilly Areas, Deyang 618000, China)
Abstract：An impinging jet is one of the highly efficient ways of heat transfer. The impingement cooling process through a single jet with different angles is simulated numerically, and the influence of the jet flow field on the heat transfer characteristics on the wall is discussed quantitatively. The result of the combined jet impinging cooling model indicates that the characteristics of heat transfer in the stagnation zone and the wall jet zone is closely related to the velocity distribution of the jet. Therefore, the combined jet impingement cooling model is established, and the verification of the numerical models demonstrates that the combined jet inherits the advantages of single-beam direct and oblique jets, which effectively improves the heat transfer efficiency of the downstream jet while ensuring that in the stagnation zone, resulting in a more uniform wall temperature distribution.
Key words：jet；impingement cooling；oblique jet；combined jet；numerical analysis
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收稿日期：2021-06-07
基金项目：四川省重大科技专项资助项目(2020YFSY0058)
作者简介：赵波（1972－），男，吉林长岭人，工学博士，教授，主要研究方向为湿盘式制动器性能分析、无人驾驶矿车设计和车队调度系统、热对流和射流传热理论等，E-mail：aceaugust@126.com。
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