Experimental study of flow pattern and heat transfer of liquid metal in microchannel under the magnetic field

doi:10.7523/j.issn.2095-6134.2021.04.004

Abstract

Abstract: The first wall of facing plasma of fusion reactor needs to bear high-intensity neutron irradiation and heat load, so it is difficult for ordinary materials to meet the requirements. It is an effective way to use the liquid metal as the first wall of facing plasma. Taking liquid metal as the first wall, it is necessary to solve the problem that how to evenly spread the liquid metal on the wall and study the heat transfer characteristics between liquid metal and the wall under a perpendicular magnetic field. Previous studies have shown that the structure of microchannel surface contributes to the even spreading of liquid metal. In this paper, liquid metal alloy GaInSn works as the working fluid. The flow pattern and heat transfer characteristics of the liquid metal in microchannel plate under the condition of uniform magnetic field and no magnetic field are studied experimentally. The influence of a perpendicular magnetic field on the flow pattern and heat transfer of liquid metal in a microchannel is studied by comparing the experimental results of two different working conditions.

Key words: microchannel, convective heat transfer, liquid metal, uniform magnetic field

CLC Number:

TK124

LEI Tianyang, MENG Xu, WANG Zenghui, NI Mingjiu. Experimental study of flow pattern and heat transfer of liquid metal in microchannel under the magnetic field[J]. Journal of University of Chinese Academy of Sciences, 2021, 38(4): 459-466.

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