Thermodynamic simulation and structural optimization of the collimator in the drift duct of EAST-NBI

doi:10.1016/j.net.2022.07.011

	Thermodynamic simulation and structural optimization of the collimator in the drift duct of EAST-NBI
	Tang, Ning 1,2; Hu, Chun-dong 1; Xie, Yuan-lai 1; Wei, Jiang-long 1; Cui, Zhi-Wei 1,2; Xie, Jun-Wei 1,2; Pan, Zhuo 1,2; Jiang, Yao 1,2
刊名	NUCLEAR ENGINEERING AND TECHNOLOGY
	2022-11-01
卷号	54
关键词	Neutral beam injection Collimator Thermal-hydraulic Twisted tapes
ISSN号	1738-5733
DOI	10.1016/j.net.2022.07.011
通讯作者	Xie, Yuan-lai(laurrence@ipp.ac.cn)
英文摘要	The collimator is one of the high-heat-flux components used to avoid a series of vacuum and thermal problems. In this paper, the heat load distribution throughout the collimator is first calculated through experimental data, and a transient thermodynamic simulation analysis of the original model is carried out. The error of the pipe outlet temperature between the simulated and experimental values is 1.632%, indicating that the simulation result is reliable. Second, the model is optimized to improve the heat transfer performance of the collimator, including the contact mode between the pipe and the flange, the pipe material and the addition of a twisted tape in the pipe. It is concluded that the convective heat transfer coefficient of the optimized model is increased by 15.381% and the maximum wall temperature is reduced by 16.415%; thus, the heat transfer capacity of the optimized model is effectively improved. Third, to adapt the long-pulse steady-state operation of the experimental advanced superconducting Tokamak (EAST) in the future, steady-state simulations of the original and optimized collimators are carried out. The results show that the maximum temperature of the optimized model is reduced by 37.864% compared with that of the original model. The optimized model was changed as little as possible to obtain a better heat exchange structure on the premise of ensuring the consumption of the same mass flow rate of water so that the collimator can adapt to operational environments with higher heat fluxes and long pulses in the future. These research methods also provide a reference for the future design of components under high-energy and long-pulse operational conditions.(c) 2022 Korean Nuclear Society, Published by Elsevier Korea LLC. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
资助项目	National Key R &D Program of China ; Comprehensive Research Facility for Fusion Technology Program of China ; [2017YFE0300103] ; [2018- 000052-73-01-001228]
WOS关键词	BEAM EXTRACTION ; DESIGN
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	KOREAN NUCLEAR SOC
WOS记录号	WOS:000885455900006
资助机构	National Key R &D Program of China ; Comprehensive Research Facility for Fusion Technology Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131670]
专题	中国科学院合肥物质科学研究院
通讯作者	Xie, Yuan-lai
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Tang, Ning,Hu, Chun-dong,Xie, Yuan-lai,et al. Thermodynamic simulation and structural optimization of the collimator in the drift duct of EAST-NBI[J]. NUCLEAR ENGINEERING AND TECHNOLOGY,2022,54.
APA	Tang, Ning.,Hu, Chun-dong.,Xie, Yuan-lai.,Wei, Jiang-long.,Cui, Zhi-Wei.,...&Jiang, Yao.(2022).Thermodynamic simulation and structural optimization of the collimator in the drift duct of EAST-NBI.NUCLEAR ENGINEERING AND TECHNOLOGY,54.
MLA	Tang, Ning,et al."Thermodynamic simulation and structural optimization of the collimator in the drift duct of EAST-NBI".NUCLEAR ENGINEERING AND TECHNOLOGY 54(2022).