New concept of the first wall to reduce MHD pressure drop

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Hashizume, Hidetoshi^{a; *} | Usui, Yoshiaki^a | Kitajima, Sumio^a | Sagara, Akio^b

Affiliations: [a] Tohoku University, 01 Aramak, Aoba, Sendai,980-8579, Japan | [b] National Institute for Fusion Science, Toki, Gifu 509-5292, Japan

Correspondence: [*] Corresponding author. Tel.: +81 22 217 7904; Fax: +81 22 217 7904; E-mail: [email protected]

Abstract: Numerical analysis of MHD flow in rectangular channel is performed to evaluate the performance of remountable first wall with liquid blanket like Li or Flibe, where fabrication and maintenance of the system become extremely simplified. Four-channel model is used to calculate the MHD pressure drop in variously coated channels. The effect of crack existence in the coated layer of flow channel on the MHD pressure drop is also evaluated for real usage. The numerical results indicate that some amount of crack existence is allowable, which shows possibility to apply the first wall concept to future fusion reactor design.

Keywords: MHD pressure drop, first wall, fusion reactor

DOI: 10.3233/JAE-2004-639

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 619-623, 2004