Influence of the strong magnetic field on free surface thermocapillary convection of an electrically conductive fluid

doi:10.7523/j.issn.2095-6134.2019.01.005

Abstract

Abstract: The divertor of the nuclear fusion device effectively shields the impurities from the wall and discharges the particle flow and heat flow from the central plasma. The liquid metal performs this task well. Liquid metal has the characteristics of strong thermal conductivity, large liquid temperature range, and easy supplement. It is one of the principal materials for plasma facing components in future fusion reactor. There are large temperature differences at different locations of the divertor. Under the action of surface tension, the thermocapillary convection is formed on the free surface of liquid metal, and the thermocapillary convection is affected by the strong magnetic field of the fusion reactor. The visual experimental results have been obtained through the establishment of the conductive fluid free surface thermocapillary convection experiment system. We have studied the influences of temperature change and strong magnetic field parameters on the conductive fluid free surface thermocapillary convection. In-depth analysis of the process has important significance for successful application of liquid metal as plasma facing components in future fusion.

Key words: thermocapillary convection, surface tension, liquid metal, magnetic field

CLC Number:

TK124

CHEN Ran, WANG Zenghui, NI Mingjiu. Influence of the strong magnetic field on free surface thermocapillary convection of an electrically conductive fluid[J]. , 2019, 36(1): 25-30.

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