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Manuscript Title: VMOMS: a computer code for finding moment solutions to the Grad-
Shafranov equation. | ||

Authors: L.L. Lao, R.M. Wieland, W.A. Houlberg, S.P. Hirshman | ||

Program title: VMOMS | ||

Catalogue identifier: ABSH_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 27(1982)129 | ||

Programming language: Fortran. | ||

Computer: PDP-10/KL10. | ||

Operating system: TOPS 10. | ||

RAM: 9K words | ||

Word size: 36 | ||

Peripherals: disc. | ||

Keywords: Plasma physics, Variational principle, Grad-shafranov equation, Moments, Shooting method, Equilibrium. | ||

Classification: 19.6. | ||

Revision history: | ||

Type | Tit
le | Reference |

correction | 000A CORRECTION 09/05/83 | See below |

Nature of problem:This code finds approximate solutions to the Grad-Shafranov equation describing scalar pressure-balance equilibria for axisymmetric tokamak plasmas. A Fourier series expansion of the flux surface coordinates (R,Z) is made in terms of two new coordinates (rho, theta), and the resulting equation is conveniently reduced to a system of ordinary differential equations (ODE's) using a variational principle. The solution of these simple equations with pressure and current as driving functions yields, in principle, a complete description of the equilibrium. | ||

Solution method:The system of ODE's is solved numerically by a shooting method using D02AGF, a suite of subroutines in the NAG library. | ||

Restrictions:Complete axisymmetry is assumed, as well as up-down symmetry about the toroidal midplane. | ||

Unusual features:VMOMS uses a suite of routines D02AGF developed by I. Gladwell and available from the NAG library of mathematical software. An annotated version of these routines is included in the source file. A data file is generated for easy postprocessing of the results and subsequent plotting. A plotting routine, adapted for use on the DEC PDP-10, has been included as a guide to generating the plots. | ||

CORRECTION SUMMARY | ||

Manuscript Title: VMOMS: a computer code for finding moment solutions to the Grad-
Shafranov equation. (C.P.C. 27(1982)129). | ||

Authors: L.L. Lao, R.M. Wieland, W.A. Houlberg, S.P. Hirshman | ||

Program title: 000A CORRECTION 09/05/83 | ||

Catalogue identifier: ABSH_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 30(1983)107 | ||

Classification: 19.6. |

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