MHD Stability Calculation of High-beta Quasi-Axisymmetric Stellarators
Author : G. Y. Fu
Publisher :
Page : 4 pages
File Size : 40,4 MB
Release : 1999
Category : Magnetohydrodynamic instabilities
ISBN :
Author : G. Y. Fu
Publisher :
Page : 4 pages
File Size : 40,4 MB
Release : 1999
Category : Magnetohydrodynamic instabilities
ISBN :
Author :
Publisher :
Page : pages
File Size : 20,58 MB
Release : 1999
Category :
ISBN :
The MHD stability of quasi-axisymmetric compact stellarators is investigated. It is shown that bootstrap current driven external kink modes can be stabilized by a combination of edge magnetic shear and appropriate 3D plasma boundary shaping while maintaining good quasi-axisymmetry. The results demonstrate that there exists a new class of stellarators with quasi-axisymmetry, large bootstrap current, high MHD beta limit, and compact size.
Author : G. Y. Fu
Publisher :
Page : 9 pages
File Size : 22,94 MB
Release : 2000
Category : Stellarators
ISBN :
Author : S. R. Hudson
Publisher :
Page : 12 pages
File Size : 21,23 MB
Release : 2003
Category : Stellarators
ISBN :
Author : L. P. Ku
Publisher :
Page : 11 pages
File Size : 23,79 MB
Release : 1999
Category : Stellarators
ISBN :
Author : M. C. Zarnstorff
Publisher :
Page : 8 pages
File Size : 23,42 MB
Release : 2000
Category : Stellarators
ISBN :
Author : M. H. Redi
Publisher :
Page : 17 pages
File Size : 26,92 MB
Release : 2001
Category : Stellarators
ISBN :
Author :
Publisher :
Page : 704 pages
File Size : 49,46 MB
Release : 1995
Category : Aeronautics
ISBN :
Author :
Publisher :
Page : pages
File Size : 25,15 MB
Release : 1982
Category :
ISBN :
A scalar form of the ideal MHD energy principle is shown to provide a more accurate and efficient numerical method for determining the stability of an axisymmetric toroidal equilibrium than the usual vector form. Additional improvement is obtained by employing a class of straight magnetic field line flux coordinates which allow for an optimal choice of the poloidal angle in the minor cross section of the torus. The usefulness of these techniques is illustrated by a study (using a new code, PEST 2) of the convergence properties of the finite element Galerkin representation in tokamak and spheromak geometries, and by the accurate determination of critical .beta. values for ballooning modes.
Author : G. Y. Fu
Publisher :
Page : 9 pages
File Size : 50,12 MB
Release : 2000
Category : Stellarators
ISBN :