Article ID Journal Published Year Pages File Type
272684 Fusion Engineering and Design 2010 5 Pages PDF
Abstract

Temperature control of the high heat flux (HHF) components in the neutral beam injection (NBI) system in the Experimental Advanced Superconducting Tokamak (EAST) is a very important issue for realizing a high-parameter steady state condition in the tokamak. This paper presents a 3-D computational fluid dynamics analysis of a cooling system of a residual ion dump (RID) composed of hypervapotron structures, which has been previously used in the Mega-Amp Spherical Tokamak (MAST). The results obtained by the proposed method coincide well with experimental values, which validate this method. This study provides a powerful tool for protecting the HHF components in the NBI system from overheating and sustaining irreparable damage. Moreover, this study provides a potentially useful method for optimizing the structural design of HHF components in the NBI system.

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