The CHEASE code for toroidal MHD equilibria. (English) Zbl 0922.76240

Lütjens, H.; Bondeson, A.; Sauter, O.

Comput. Phys. Commun. 97, No. 3, 219-260 (1996).

Summary: We show that the CHEASE code (cubic Hermite element axisymmetric static equilibrium) solves the Grad-Shafranov equation for toroidal MHD equilibria using a Hermite bicubic finite element discretization with pressure, current profiles, and plasma boundaries specified by analytical forms or sets of experimental data points. Moreover, CHEASE allows the automatic generation of pressure profiles marginally stable to ballooning modes or with a prescribed fraction of bootstrap current. The code provides equilibrium quantities for several stability and global wave propagation codes.

MSC:

76M10	Finite element methods applied to problems in fluid mechanics
76W05	Magnetohydrodynamics and electrohydrodynamics

Keywords:

local interchange modes; cubic Hermite element axisymmetric static equilibrium; Grad-Shafranov equation; Hermite bicubic finite element discretization; automatic generation of pressure profiles; ballooning modes

Software:

CHEASE; ERATO; XTOR

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