Self-Organized Criticality Theory Model of Thermal Sandpile
PENG Xiao-Dong1** , QU Hong-Peng1** , XU Jian-Qiang1 , HAN Zui-Jiao2
1 Southwestern Institute of Physics, Chengdu 6100412 Sichuan Administration College, Chengdu 610071
Abstract ：A self-organized criticality model of a thermal sandpile is formulated for the first time to simulate the dynamic process with interaction between avalanche events on the fast time scale and diffusive transports on the slow time scale. The main characteristics of the model are that both particle and energy avalanches of sand grains are considered simultaneously. Properties of intermittent transport and improved confinement are analyzed in detail. The results imply that the intermittent phenomenon such as blobs in the low confinement mode as well as edge localized modes in the high confinement mode observed in tokamak experiments are not only determined by the edge plasma physics, but also affected by the core plasma dynamics.
收稿日期: 2015-03-18
出版日期: 2015-10-02
:
45.70.Cc
(Static sandpiles; granular compaction)
52.25.Fi
(Transport properties)
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2015, Vol. 32 
