A helical axis stellarator equilibrium model
作者:
A. E. Koniges,
J. L. Johnson,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1985)
卷期:
Volume 28,
issue 10
页码: 3127-3135
ISSN:0031-9171
年代: 1985
DOI:10.1063/1.865354
出版商: AIP
数据来源: AIP
摘要:
An asymptotic model is developed to study magnetohydrodynamic equilibria in toroidal systems with a helical magnetic axis. Using a characteristic coordinate system based on the vacuum field lines, the equilibrium problem is reduced to a two‐dimensional generalized partial differential equation of the Grad–Shafranov type. A stellarator‐expansion free‐boundary equilibrium code is modified to solve the helical‐axis equations. The expansion model is used to predict the equilibrium properties of toroidal asperator devices. Numerically determined flux surfaces, magnetic well, transform, and shear are presented. The equilibria show a toroidal Shafranov shift.
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