摘要
本文对高温热管吸液芯多孔介质内金属钠液的液汽相变过程进行了模拟研究,并采用流体体积分数模型和传质模型对此过程进行了数值分析.研究表明孔隙率和渗透率越大的组合式吸液芯多孔介质,热量在液态金属中的传递速率越快,进而可以增加高温热管的传热量,提高传热效率;但是孔隙率和渗透率越大,组合式吸液芯多孔介质加热壁面的温度分布越不均匀,产生沸腾传热极限的可能性亦越大.
The process of liquid-vapor phase-change of sodium in the combined wick porous media was simulated and analyzed numerically by the method of tracking the volume fraction of fluid and establishing the mass transfer model.It was shown that the speed of heat transfer in the liquid metal in the combined wick porous media is faster with the larger porosity and the bigger permeability, which can increase the magnitude of heat transfer of high-temperature heat pipe and the efficiency of heat transfer.However,it will increase the possibility of reaching the boiling heat transfer limitation and causing uneven distribution of the heating wall temperature of the combined wick porous media.
作者
于萍
黄传辉
张红
许辉
沈妍
YU Ping;HUANG Chuan-Hui;ZHANG Hong;XU Hui;SHEN Yan(College of Mechanical and Electrical Engineering,Xuzhou University of Technology,Xuzhou 221018,China;College of Energy,Nanjing Tech University,Nanjing 211816,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2018年第12期2732-2737,共6页
Journal of Engineering Thermophysics
基金
江苏省高校自然科学研究面上项目(No.16KJB470016
No.17KJB460015)
国家自然科学基金(No.51076062)
徐州市科技计划项目(No.KH17007)
