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Feasibility Study on Liquid Divertor Using Molten Salt Free Surface Flow with Turbulent Promoters

Takahiro IJIMA, Shota SAKURAI, Fumiya TAKAHASHI, Shinji EBARA and Hidetoshi HASHIZUME

Tohoku University, 6-6-01-2 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan

(Received 9 January 2023 / Accepted 20 June 2023 / Published 28 August 2023)

Abstract

A liquid Flibe divertor is proposed as a fusion DEMO reactor divertor that can suppress the surface temperature with low velocity through turbulent promoters, which are necessary considering the low heat transfer performance of liquid Flibe. Using water as a simulant fluid, a pebble-sunk structure (PSS) is introduced herein as a turbulent promoter. The heat transport characteristic is evaluated by flow visualization and heat transport experiments. The experimental results show that the kinetic energy and the heat transport near the free surface are enhanced when the PSS is introduced.

Copyright (c) 2023 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

fusion reactor, divertor, liquid divertor, molten salt divertor, turbulent promoter, PSS

DOI: 10.1585/pfr.18.2405075

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References

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