A 3-D Resistive MHD Simulation Analysis of Field Reversal Control in the Reversed Field Pinch

概要

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A three-dimensional (3-D) resistive MHD simulation code under the compressibil-ity condition has been applied to analysis of the field reversal control in the reversedfield pinch (RFP). Simulation results have shown that a loss of the field reversal at thewall leads to flattening of the toroidal field profile, and also to the rapid increase ofthe fluctuating magnetic energy due to nonlinear tearing modes with m=1.Moreover, the fluctuating magnetic energy spectrum for the m = I and m = 2 modesrapidly broadens toward high and low n, which is caused by the (m=0; n= -I)mode. By deepening the field reversal at the wall, the reversal surface keeps awayfrom the plasma surface, and safety factor becomes a narrow profile. As a result, arapid growth and saturation of these tearing modes is suppressed by the field reversalcontrol.
社団法人日本物理学会の論文
1989-11-15