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THE INSTABILITY ANALYSIS OF ION TEMPERATURE GRADIENT DRIVEN IN A TOKAMAK PLASMA WITH NEGATIVE MAGNETIC SHEAR
JIAN Guang-de, HUANG Lin
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 2001, 18 (
6
): 527-530.
Abstract
（
552
）
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（167KB）（
1130
）
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An eigenmode equation of ion temperature gradient driven instability in a tokamak plasma with negative magnetic shear is solved numerically by the shooting method.Numerical calculations show that the toroidal rotation sheared flow can modify the sheared slab
η
i
instability and has a stabilizing
η
i
role in the plasma core near minimum
q
magnetic surface.
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NUMERICAL SIMULATION METHOD OF NEGATIVE ION BEAM EXTRACTION AND ACCELERATION SYSTEM
JIAN Guang-de, WANG Hui-san
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 2000, 17 (
4
): 443-448.
Abstract
（
252
）
PDF
（284KB）（
1079
）
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A mathematical model for numerically simulating high current negative ion beam extraction and acceleration system has been established in order to assistantly design.The related computation method is described briefly.The electric and magnetic field conformation in the system is optimized and the initial optimized results of the 300 keV、5 electrodes negative ion beam system is given as well.
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A NUMERICAL SOLUTION OF THE BOUNDARY VALUE PROBLEM FOR SECOND ORDER ORDINARY DIFFERENTIAL EQUATTIONS
Jian Guang-de, Pan Chuan-hong
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 1987, 4 (
2
): 152-158.
Abstract
（
223
）
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（379KB）（
939
）
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In this paper, a kind of boundary value problems of ordinary differential equations, in which the function solutions increase rapidly, are solved by means of compressed transformation.It has been shown that the convergence can be speed up in this way.Some satisfied numerical results are obtained by using an analytic approach near the singular point w=0.
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THE NUMERICAL SOLUTION OF QUASILINEAR FOKKERPLANCK EQUATION OF THE TOROIDAL EFFECTS
Jian Guang-de, Wang Zhong-tian
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 1986, 3 (
4
): 394-400.
Abstract
（
181
）
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（371KB）（
947
）
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In this paper, the quasilinear F-P equation is numerically solved by amultiple shooting method with the toroidal effects included. The plasma current density per unit power density J/Pd is calculated on the basis of the solution obtained above. Our numerical results are in qualitative agreement with those obtained from physical analysis.
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