Kinetic effects on the stability properties of field-reversed configurations. II. Nonlinear evolution

被引:38
作者
Belova, EV [1 ]
Davidson, RC [1 ]
Ji, H [1 ]
Yamada, M [1 ]
机构
[1] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA
关键词
D O I
10.1063/1.1666293
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Results of three-dimensional hybrid simulations of the field-reversed configuration (FRC) are presented. Emphasis of this work is on the nonlinear evolution of magnetohydrodynamic (MHD) instabilities in kinetic FRCs. A wide range of (s) over bar values is considered, where the (s) over bar is the FRC kinetic parameter, which measures the number of ion gyroradii in the configuration. The linear and nonlinear stability of MHD modes with toroidal mode numbers ngreater than or equal to1 is investigated, including the effects of ion rotation, finite electron pressure, and weak toroidal field. Low-(s) over bar simulations show nonlinear saturation of the n=1 tilt mode. The ngreater than or equal to2 rotational modes are observed to grow during the nonlinear phase of the tilt instability due to ion spin-up in the toroidal direction. Large-(s) over bar simulations show no saturation of the tilt mode, and there is a slow nonlinear evolution of the instability after the initial fast linear growth. Overall, the hybrid simulations demonstrate the importance of nonlinear effects, which are responsible for the saturation of instabilities in low-(s) over bar configurations, and also for the increase in FRC lifetime compared to MHD models in high-(s) over bar configurations. (C) 2004 American Institute of Physics.
引用
收藏
页码:2523 / 2531
页数:9
相关论文
共 23 条
[1]   Profile consistency of an elongated field-reversed configuration. I. Asymptotic theory [J].
Barnes, DC .
PHYSICS OF PLASMAS, 2001, 8 (11) :4856-4863
[2]   Numerical study of tilt stability of prolate field-reversed configurations [J].
Belova, EV ;
Jardin, SC ;
Ji, H ;
Yamada, M ;
Kulsrud, R .
PHYSICS OF PLASMAS, 2000, 7 (12) :4996-5006
[3]   Kinetic effects on the stability properties of field-reversed configurations. 1. Linear stability [J].
Belova, EV ;
Davidson, RC ;
Ji, HT ;
Yamada, M .
PHYSICS OF PLASMAS, 2003, 10 (06) :2361-2371
[4]  
BELOVA EV, 2000, 18 IAEA FUS EN C SOR
[5]   ROTATIONAL INSTABILITIES IN THE FIELD-REVERSED CONFIGURATION - RESULTS OF HYBRID SIMULATIONS [J].
HARNED, DS .
PHYSICS OF FLUIDS, 1983, 26 (05) :1320-1326
[6]   THE LARGE-S FIELD-REVERSED CONFIGURATION EXPERIMENT [J].
HOFFMAN, AL ;
CAREY, LN ;
CRAWFORD, EA ;
HARDING, DG ;
DEHART, TE ;
MCDONALD, KF ;
MCNEIL, JL ;
MILROY, RD ;
SLOUGH, JT ;
MAQUEDA, R ;
WURDEN, GA .
FUSION TECHNOLOGY, 1993, 23 (02) :185-207
[7]   SUPPRESSION OF THE N = 2 ROTATIONAL INSTABILITY IN FIELD-REVERSED CONFIGURATIONS [J].
HOFFMAN, AL ;
SLOUGH, JT ;
HARDING, DG .
PHYSICS OF FLUIDS, 1983, 26 (06) :1626-1629
[8]   VARIATIONAL FORMULATION FOR A MULTIFLUID FLOWING PLASMA WITH APPLICATION TO THE INTERNAL TILT MODE OF A FIELD-REVERSED CONFIGURATION [J].
ISHIDA, A ;
MOMOTA, H ;
STEINHAUER, LC .
PHYSICS OF FLUIDS, 1988, 31 (10) :3024-3034
[9]   Linear gyroviscous stability of field-reversed configurations with static equilibrium [J].
Iwasawa, N ;
Ishida, A ;
Steinhauer, LC .
PHYSICS OF PLASMAS, 2001, 8 (04) :1240-1247
[10]   NONLINEAR MAGNETOHYDRODYNAMIC STUDIES OF THE TILT MODE IN FIELD-REVERSED CONFIGURATIONS [J].
MILROY, RD ;
BARNES, DC ;
BISHOP, RC ;
WEBSTER, RB .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1989, 1 (06) :1225-1232