Numerical Simulation of Heat Transfer Performance for Ultra-Thin Flat Heat Pipe

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  • 1. School of Electric Power, South China University of Technology, Guangzhou 510640, China
    2. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China

Online published: 2023-11-28

Supported by

This work is supported by the National Natural Science Foundation of China (Granted No. 52176156).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

Abstract

The heat transfer performance of ultra-thin flat heat pipes with #180 copper mesh wick was studied by numerical simulation for different heating powers. The length, width and height of the ultra-thin flat heat pipe are 80 mm, 8.5 mm and 1 mm, respectively. The temperature distribution and flow characteristics of ultra-thin flat heat pipes were simulated by coupling porous media model and user-defined function (UDF) in FLUENT. To validate the accuracy of the numerical model, the simulation results of the ultra-thin flat heat pipe are compared with the experimental data in predicting the evaporation section temperature. The numerical model has good accuracy for the one-dimensional heat transfer method of ultra-thin flat heat pipes. The velocity, pressure drop of the wick and total temperature difference have the same variation trend. With the increase of heating power, the temperature difference of ultra-thin flat heat pipes increases, and the pressure drop and the liquid velocity in the wick also increase.

Cite this article

YAN Wentao, YANG Xin, LIU Tengqing, WANG Shuangfeng . Numerical Simulation of Heat Transfer Performance for Ultra-Thin Flat Heat Pipe[J]. Journal of Thermal Science, 2023 , 32(2) : 643 -649 . DOI: 10.1007/s11630-023-1768-0

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