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Effect of JxB-forced convection on the power and particle control capabilities of a liquid metal plasma-facing component

Research Project

Project/Area Number 20K03906
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 14020:Nuclear fusion-related
Research InstitutionChubu University

Principal Investigator

Hirooka Yoshihiko  中部大学, 工学部, 客員教授 (60311213)

Co-Investigator(Kenkyū-buntansha) 大宅 諒  九州大学, 総合理工学研究院, 助教 (10804750)
胡 長洪  九州大学, 応用力学研究所, 教授 (20274532)
武藤 敬  中部大学, 工学部, 教授 (90115949)
Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsプラズマ対向機器 / ダイバーター / 液体金属 / 熱・粒子制御 / プラズマー材料相互作用 / 粒子制御 / 熱除去 / プラズマー壁相互作用 / 熱輸送 / 粒子輸送 / リサイクリング / 磁気閉じ込め核融合炉 / プラズマ―壁相互作用 / 水素リサイクリング / 電磁力強制流動 / プラズマ-壁相互作用 / 周辺プラズマ
Outline of Research at the Start

代表者等は、液体金属プラズマ対向機器(PFC)の研究を進めて来た。その結果、静止液体金属に比べて自然対流・強制流動させた場合、①プラズマから入射された粒子の輸送が促進されること;②熱輸送も促進されることが個別の実験から検証された。

今回の申請研究では、以上2つの現象が同時に観測できるような実験セットアップを設計製作し実証実験を行い、将来の磁気核融合DEMO炉に於ける周辺熱・粒子制御用PFCの開発に資することを目的とするものである。

Outline of Final Research Achievements

To resolve technical issues associated with the plasma-facing components (PFCs) such as the divertor to be installed in a steady state magnetic fusion DEMO reactor, employing high-temperature metals such as tungsten for the surface component,the use of liquid metals (LMs) such as molten lithium has been proposed and evaluated as a possible resolution over the past two or so decades, using plasma confinement devices as well as laboratory-scale experimental facilities. The present work is intended to explore the effect of forced convection in liquid metals on the transport behavior of particles and heat from divertor plasma bombardment. Laboratory-scale experiments have been conducted, using GaInSn and molten lithium as the liquid metal targets to be exposed to steady-state plasmas. Data clearly indicate that electromagnetically induced convection can enhance particles and heat transport in these liquid metals, proof-of-principle data for convected LM-PFCs.

Academic Significance and Societal Importance of the Research Achievements

2050年脱炭素社会の実現に向けてベースロードエネルギー源として有望なのは、核融合エネルギーである。核融合エネルギー開発は、国際核融合実験炉(ITER)の建設が大幅に遅れるなか世界各国で実証炉(DEMO)設計が進んでいる。しかし、DEMO炉はITERに比べて遥かに強力なプラズマ加熱を必要とする為、高融点金属を用いるプラズマ対向機器では、閉じ込めロス熱流束を受け止められない。本研究課題は、その問題点を解決する手法として液体金属を用いた液体金属プラズマ対向機器を提案し、JxB電磁力による強制流動を与えて熱・粒子制御能力を飛躍的に向上させる事を実証する事が目的である。

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022 2021 2020

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Observations of the Convection Effects on Particles and Heat Transport in Liquid Metals Under Plasma Bombardment and Infrared Heat Radiation2023

    • Author(s)
      Hirooka Yoshi、Bi Hailin
    • Journal Title

      Journal of Fusion Energy

      Volume: 42 Issue: 2 Pages: 40-49

    • DOI

      10.1007/s10894-023-00375-7

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 短パルス熱負荷時の液体金属表面挙動の観察(口頭発表)2024

    • Author(s)
      廣岡慶彦、他
    • Organizer
      プラズマ核融合学会
    • Related Report
      2024 Annual Research Report
  • [Presentation] A summary of the laboratory experiments on particles and heat transport in GaInSn and liq. Li2024

    • Author(s)
      Yoshi Hirooka and Hailin Bi
    • Organizer
      8th Intnl. Symp. Liquid metals applications for fusion (Hefei, China)
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] Observations of liquid metal responses to short-pulsed high energy impacts2024

    • Author(s)
      Yoshi Hirooka
    • Organizer
      8th Intnl. Symp. Liquid metals applications for fusion (Hefei, China)
    • Related Report
      2024 Annual Research Report
  • [Presentation] 流動液体金属PFCによる 熱・粒子制御に関する実験的研究2023

    • Author(s)
      廣岡慶彦、他
    • Organizer
      プラズマ・核融合学会
    • Related Report
      2023 Research-status Report
  • [Presentation] 液体金属PFCによる熱・粒子制御に関する実験的研究2022

    • Author(s)
      廣岡慶彦、他
    • Organizer
      プラズマ核融合学会(年会)
    • Related Report
      2022 Research-status Report
  • [Presentation] Observations of effects of convections on particles and heat transport in liquid2022

    • Author(s)
      Y. Hirooka et al.
    • Organizer
      7th Int. symp. Liquid metals applications for fusion
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A summary of the PoP experiments on the liquid metal PFC concept2021

    • Author(s)
      Yoshi Hirooka
    • Organizer
      The 2nd US-Japan workshop on ”power and particle control in a fusion DEMO reactor"r"
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 流動液体金属PFCによる熱・粒子制御に関する実験的研究2021

    • Author(s)
      廣岡慶彦、他
    • Organizer
      プラズマ核融合学会(令和3年11月22日~25日)
    • Related Report
      2021 Research-status Report
  • [Presentation] 流動液体金属PFCによる熱・粒子制御に関する実験的研究2020

    • Author(s)
      廣岡慶彦、他
    • Organizer
      プラズマ核融合学会年会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2026-01-16  

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