Self-Organized Criticality Theory Model of Thermal Sandpile

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...

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Published inChinese physics letters Vol. 32; no. 9; pp. 79 - 83
Main Author 彭晓东 曲洪鹏 许健强 韩最蛟
Format Journal Article
LanguageEnglish
Published 01.09.2015
Subjects
Avalanches
Computer simulation
Confinement
Plasma dynamics
Sand
Time
Tokamak devices
Transport
临界理论
托卡马克实验
时间尺度
沙堆模型
等离子体动力学
等离子体物理
自组织临界
间歇现象
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/32/9/094501

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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.
AbstractList 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.
Author 彭晓东 曲洪鹏 许健强 韩最蛟
AuthorAffiliation Southwestern Institute of Physics, Chengdu 610041 Sichuan Administration College, Chengdu 610071
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Notes PENG Xiao-Dong , QU Hong-Peng, XU Jian-qiang, HAN Zui-Jiao（ 1.Southwestern Institute of Physics, Chengdu 610041 2. Sichuan Administration College, Chengdu 610071）
11-1959/O4
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.
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StartPage 79
SubjectTerms Avalanches
Computer simulation
Confinement
Plasma dynamics
Sand
Time
Tokamak devices
Transport
临界理论
托卡马克实验
时间尺度
沙堆模型
等离子体动力学
等离子体物理
自组织临界
间歇现象
Title Self-Organized Criticality Theory Model of Thermal Sandpile
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