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Numerical analysis of MHD flow in remountable first wall

H Hashizume, Y Usui, S Kitajima, Y Hida, A Sagara2002年Fusion Engineering and DesignIF 1.7出版社

AbstractNew concept of remountable first wall using liquid flow has been proposed as a different approach of liquid wall concepts like APEX (Abdou, the APEX team, Fusion Eng. Des. 54 (2001) 181). In this study, the numerical analysis of MHD flow has been carried out to evaluate effect of coating on the MHD pressure drop. In the proposed concept the liquid layer is sandwiched by two metal plates with two side ribs to compose the flow channel. The numerical results indicate that coating the whole rib surface has good performance as three surface coating to reduce the MHD pressure drop. In both cases of flibe and lithium coolants, the solid metal (HT-9) wall can be used by coating with the insulator whose electric conductivity ratio (σcoating/σHT-9) is less than 10−6 under 6 T.

日本語訳

液体流動を用いた再装着可能な第一壁の新概念が、APEX(Abdou, the APEX team, Fusion Eng. Des. 54 (2001) 181)のような液体壁概念とは異なるアプローチとして提案されている。本研究では、MHD圧力損失に及ぼす被覆の効果を評価するために、MHD流動の数値解析を実施した。提案する概念では、液体層は2枚の金属板と2本の側部リブによって挟まれ、流路を構成している。数値解析の結果、リブ表面全体を被覆することが、MHD圧力損失を低減するための3面被覆として優れた性能を有することが示された。フリーベとリチウム冷却材の両方の場合において、固体金属(HT-9)壁は、6Tの磁場下で電気伝導度比(σcoating/σHT-9)が10⁻⁶未満の絶縁体を被覆することで使用可能である。

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MagnetohydrodynamicsFirst wallMHD flow
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