Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2013, Vol. 30 ›› Issue (6): 902-908.

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Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability

CHEN Longxi^1,2, LEI Wenqing², WU Bin^2,3

1. School of Information Engineering, Shandong Youth University of Political Science, Jinan 250103, China;
2. Key Lab of Information Security and Intelligent Control in Universities of Shandong, Jinan 250103, China;
3. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Received:2013-03-06 Revised:2013-07-05 Online:2013-11-25 Published:2013-11-25

Abstract

Abstract: Effect of equilibrium current profile on resistive wall mode stability are numerically studied. The most unstable mode with different equilibrium current profiles under fixed safety factor at plasma surface has same poloidal number and toroidal number. At same wall location, linear growth rate of (3,1) mode of non-uniform current profile is greater than that of uniform current profile. Effect of plasma flow on resistive wall mode stability is different with different current profiles. After linear evolution, RWM saturates at nonlinear phase. Saturation can be attributed to flux piling up on resistive wall. Saturation level of non-uniform current profile is lower than that of uniform current profile.

Key words: resistive wall mode, equilibrium profile, stability, saturation

CLC Number:

O534.2

CHEN Longxi, LEI Wenqing, WU Bin. Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2013, 30(6): 902-908.

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Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability

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