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Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability
CHEN Longxi, LEI Wenqing, WU Bin
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS    2013, 30 (6): 902-908.  
Abstract263)      PDF (2334KB)(1082)      
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.
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A Mesh Adaptive Method for Two-Dimensional Three-Tempeature Heat Conduction Equations
JIANG Jun, SHU Shi, HUANG Yunqing, CHEN Long
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS    2007, 24 (1): 19-28.  
Abstract271)      PDF (626KB)(1137)      
A mesh adaptation approach based on Hessian matrix is proposed to solve two-dimensional heat conductione equations with coupled electron,iron and photon temperatures.Three kinds of adaptive mesh and two adaptation methods based on gradient and flux of the photon finite element solution are used. It is shown that the energy conservation error and computation efficiency of the approach are improved.
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