纳米流体在热虹吸管中换热性能数值研究  

Numerical Study on Heat Transfer Performance of Nanofluid in Thermosyphon

作　　者：袁明森 贺铸[1,2] 谭方关 YUAN Mingsen;HE Zhu;TAN Fangguan(The StateKey Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;Steel Metallurgy and Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081 [2]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《矿业工程研究》2021年第3期8-16,共9页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(51974211)。

摘　　要：针对热虹吸管的换热性能,基于多相流模型捕捉气液两相间的相界面变化,研究各单因素之间的交互作用对热管换热性能的影响,将数值模拟与实验结果对比验证,并采用正交实验法对各参数进行协同分析.研究结果表明:填充率对热管换热性能影响程度最大,加热功率和倾斜角度对其影响次之,纳米流体体积分数对其影响最小;相比于初始实验结果,最优化工况的热阻下降率达到13%,它的等效对流换热系数提高了23%.This paper focuses on the heat transfer performance of the thermosyphon.Based on the multiphase flow model to capture the phase interface changes between the gas and liquid phase,this paper studies the influence of the interaction of each single factor on the heat transfer performance of the thermosyphon,compares the numerical simulation with the experimental results,and uses the orthogonal experiment method to analyze the various parameters cooperatively.Results show that the effect of filling ratio is the most significant at the heat transfer performance of the heat pipe,followed by heating power and inclination angle,and the nanofluid volume fraction is the smallest.Compared with the initial experiment results,the thermal resistance drop rate of optimal working condition reaches 13%,and the equivalent convective heat transfer coefficient of it increases by 23%.

关 键 词：气液两相流 纳米流体 正交实验法 热虹吸管 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]