Scalings for tokamak energy confinement。本词条依据上传的论文目录整理， […]
Scalings for tokamak energy confinement。本词条依据上传的论文目录整理，未对论文元数据及引用次数作独立核实。
基本信息
- 作者：P N Yushmanov,T Takizuka,K S Riedel,O J W F Kardaun,J G Cordey,S M Kaye,D E Post
- 机构：马克斯·普朗克等离子体物理学研究所, 库尔恰托夫研究院, 日本原子能机构, 纽约大学, 普林斯顿大学
- 期刊：Nuclear Fusion
- 年份：1990
- 引用次数（上传表记录）：534
- 关键词：约束
- DOI：10.1088/0029-5515/30/10/001
摘要
On the basis of an analysis of the ITER L-mode energy confinement database, two new scaling expressions for tokamak L-mode energy confinement are proposed, namely a power law scaling and an offset-linear scaling. The analysis indicates that the present multiplicity of scaling expressions for the energy confinement time τE in tokamaks (Goldston, Kaye, Odajima-Shimomura, Rebut-Lallia, etc.) is due both to the lack of variation of a key parameter combination in the database, fs = 0.32 R a−0.75 k0.5 ∼ A a0.25k0.5, and to variations in the dependence of τE on the physical parameters among the different tokamaks in the database. By combining multiples of fs and another factor, fq = 1.56 a2 kB/RIp = qeng/3.2, which partially reflects the tokamak to tokamak variation of the dependence of τE on q and therefore implicitly the dependence of τE on Ip and ne, the two proposed confinement scaling expressions can be transformed to forms very close to most of the common scaling expressions. To reduce the multiplicity of the scalings for energy confinement, the database must be improved by adding new data with significant variations in fs, and the physical reasons for the tokamak to tokamak variation of some of the dependences of the energy confinement time on tokamak parameters must be clarified.