工程科学学报，第41卷，第10期：1240-1248,2019年10月 Chinese Journal of Engineering,Vol.41,No.10:1240-1248,October 2019 D0I:10.13374/j.issn2095-9389.2018.10.05.001;http:/journals.ustb.ed.cn 宏观接触热阻研究综述 汪献伟)四，王兆亮2)，何庆”，李秀莲) 1)江苏理工学院机械工程学院，常州2130012)中国科学院等离子体物理研究所，合肥230031 ☒通信作者，E-mail:wangxw(@jsut.cdu.cm 摘要基于国内外学者在宏观接触热阻领域的研究成果，阐述了宏观接触热阻的理论研究和工程应用现状，介绍了宏观接 触热阻的理论计算方法、实验测量方法和数值模拟方法，明确了各种方法的优缺点.简述了宏观接触热阻的影响因素，基于中 国聚变工程实验堆(C℉ETR)低温超导线圈的降温实验，创建界面接触热阻分析模型，详细分析了热流方向、温度、压力等因素 对超导磁体不锈钢铠甲、介电绝缘材料、失超保护材料接触热阻的影响，并进一步探究了温度、压力等因素导致接触热阻发生 变化的热力学原因.最后，结合工程计算中对准确性和便捷性的要求，指出了接触热阻的未来研究方向. 关键词接触热阻：接触热导：微凸体：粗糙度：热流通量 分类号TL62·2 Research overview of macroscopic thermal contact resistance WANG Xian-wei,WANG Zhao-liang?),HE Qing),LI Xiu-lian) 1)School of Mechanical Engineering,Jiangsu University of Technology,Changzhou 213001,China 2)Institute of Plasma Physics,Chinese Academy of Sciences,Heifei 230031,China Corresponding author,E-mail:wangxw@jsut.edu.cn ABSTRACT Given the limitations of manufacturing precision,manufacturing cost,and other factors,contact clearance is always in- evitable at the contact interface of components.The contact clearance leads to the reduction of heat flux during the heat transfer process.The effect of thermal contact resistance is significant,particularly in the fields of aerospace,microelectrical technology,and cryogenic superconductor that are closely related to the operating temperature.The thermal contact resistance is affected by many fac- tors,such as size,shape,space of asperity,mechanical properties of the material,external pressure,and temperature.Moreover, these factors usually interact with each other and need to be coupled.Thus,how to describe the thermal contact resistance accurately and build the appropriate prediction model are the key problems that should be resolved during engineering calculations.On the basis of the research results of domestic and international scholars,the current research state of thermal contact resistance during theoretical cal- culations and engineering applications were presented.The theoretical calculation,experimental measurement,and digital simulation methods used to analyze macroscopic thermal contact resistance were summarized,and the advantages and disadvantages of these meth- ods were indicated.The effects of different factors on macroscopic thermal contact resistance were briefly discussed.On the basis of the combined cooling experiments of low-temperature superconducting magnet coils of the China Fusion Engineering Test Reactor,the effects of heat flow direction,temperature,and pressure on the thermal contact resistance of superconducting magnet components,such as stainless-steel jacket,dielectric insulation material,and quench protection material,were analyzed.Moreover,the reason why the effects of temperature and external pressure result in the change of thermal contact resistance was investigated from the perspective of thermal mechanics.Finally,given the accuracy and convenience requirements for the calculation of thermal contact resistance during engineering practice,the future research direction was indicated. KEY WORDS thermal contact resistance;thermal contact conductance;asperity;roughness;heat flux 收稿日期：2018-10-05 基金项目：国家磁约束聚变能发展研究专项资助项目(2014GB105002)工程科学学报,第 41 卷,第 10 期:1240鄄鄄1248,2019 年 10 月 Chinese Journal of Engineering, Vol. 41, No. 10: 1240鄄鄄1248, October 2019 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 10. 05. 001; http: / / journals. ustb. edu. cn 宏观接触热阻研究综述 汪献伟1) 苣 , 王兆亮2) , 何 庆1) , 李秀莲1) 1) 江苏理工学院机械工程学院, 常州 213001 2) 中国科学院等离子体物理研究所, 合肥 230031 苣通信作者, E鄄mail: wangxw@ jsut. edu. cn 摘 要 基于国内外学者在宏观接触热阻领域的研究成果,阐述了宏观接触热阻的理论研究和工程应用现状,介绍了宏观接 触热阻的理论计算方法、实验测量方法和数值模拟方法,明确了各种方法的优缺点. 简述了宏观接触热阻的影响因素,基于中 国聚变工程实验堆(CFETR)低温超导线圈的降温实验,创建界面接触热阻分析模型,详细分析了热流方向、温度、压力等因素 对超导磁体不锈钢铠甲、介电绝缘材料、失超保护材料接触热阻的影响,并进一步探究了温度、压力等因素导致接触热阻发生 变化的热力学原因. 最后,结合工程计算中对准确性和便捷性的要求,指出了接触热阻的未来研究方向. 关键词 接触热阻; 接触热导; 微凸体; 粗糙度; 热流通量 分类号 TL62 + 2 收稿日期: 2018鄄鄄10鄄鄄05 基金项目: 国家磁约束聚变能发展研究专项资助项目(2014GB105002) Research overview of macroscopic thermal contact resistance WANG Xian鄄wei 1) 苣 , WANG Zhao鄄liang 2) , HE Qing 1) , LI Xiu鄄lian 1) 1) School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China 2) Institute of Plasma Physics, Chinese Academy of Sciences, Heifei 230031, China 苣Corresponding author, E鄄mail: wangxw@ jsut. edu. cn ABSTRACT Given the limitations of manufacturing precision, manufacturing cost, and other factors, contact clearance is always in鄄 evitable at the contact interface of components. The contact clearance leads to the reduction of heat flux during the heat transfer process. The effect of thermal contact resistance is significant, particularly in the fields of aerospace, microelectrical technology, and cryogenic superconductor that are closely related to the operating temperature. The thermal contact resistance is affected by many fac鄄 tors, such as size, shape, space of asperity, mechanical properties of the material, external pressure, and temperature. Moreover, these factors usually interact with each other and need to be coupled. Thus, how to describe the thermal contact resistance accurately and build the appropriate prediction model are the key problems that should be resolved during engineering calculations. On the basis of the research results of domestic and international scholars, the current research state of thermal contact resistance during theoretical cal鄄 culations and engineering applications were presented. The theoretical calculation, experimental measurement, and digital simulation methods used to analyze macroscopic thermal contact resistance were summarized, and the advantages and disadvantages of these meth鄄 ods were indicated. The effects of different factors on macroscopic thermal contact resistance were briefly discussed. On the basis of the combined cooling experiments of low鄄temperature superconducting magnet coils of the China Fusion Engineering Test Reactor, the effects of heat flow direction, temperature, and pressure on the thermal contact resistance of superconducting magnet components, such as stainless鄄steel jacket, dielectric insulation material, and quench protection material, were analyzed. Moreover, the reason why the effects of temperature and external pressure result in the change of thermal contact resistance was investigated from the perspective of thermal mechanics. Finally, given the accuracy and convenience requirements for the calculation of thermal contact resistance during engineering practice, the future research direction was indicated. KEY WORDS thermal contact resistance; thermal contact conductance; asperity; roughness; heat flux