高温圆柱配合面接触热阻数值模拟研究  

An Engineering-Level NumericalStudy on Thermal Contact Resistance of Cylindirical Assembly Surfaces

作　　者：齐敏[1] 胡强[1] 游尔胜 王甜蜜 王晓凯 任兴杰 Qi Min;Hu Qiang;You Ersheng;Wang Tianmi;Wang Xiaokai;Ren Xingjie(Nuclear Power Institute of China,Chengdu,China;Institute for Advanced Technology,Shandong University,Jinan,China)

机构地区：[1]中国核动力研究设计院,四川成都 [2]山东大学高等技术研究院,山东济南

出　　处：《科学技术创新》2024年第18期218-223,共6页Scientific and Technological Innovation

基　　金：中国博士后面上基金(2023M732056);山东省自然科学基金青年基金(ZR2023QE159)。

摘　　要：在众多核工程应用中,如燃料元件芯块与包壳的热力相互作用以及热管堆的传热过程中,界面接触热阻是热工分析的一个基础参数,也是传热系统温度分布预测的一个重要不确定性来源。准确预测和调控接触热阻可为系统的热防护和能量传递提供助益。本研究采用粗糙表面重构技术以及有限元热力耦合方法,对高温下的圆柱配合面结构进行热力耦合分析。本研究建立的数值预测方法能够应用于其它圆柱配合面的接触和传热预测,其方法和预测结果可为整个系统的热力耦合分析提供合理的分析方法和基础参数支撑。In many nuclear engineering problems,such as the thermo-mechanical interaction between pellet and cladding and the heat transfer process in a heat pipe reactor,thermal contact resistance is a fundamental parameter for heat transfer analysis of the structure,besides,it is also an important uncertainty source for the temperature prediction of the system.In order to reasonably and accurately predict thermal contact resistance of cylindrical mating surfaces,this study used rough surface reconstruction technique and finite element method to conduct thermo-mechanical coupled analysis on the cylindrical mating structures at high temperatures.The numerical prediction method established in this study can be applied to the prediction of thermal contact resistance of cylindrical mating surfaces at high temperatures,and themethod can provide areasonable numerical method and results for the interfacial heat transfer.

关 键 词：粗糙曲面重构 接触热阻 热力耦合 热膨胀 

分 类 号：TL334[核科学技术—核技术及应用]