Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT

doi:10.1088/1674-1056/20/2/025204

中国物理B ›› 2011, Vol. 20 ›› Issue (2): 25204-025204.doi: 10.1088/1674-1056/20/2/025204

Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT

朱孟周, 庄革, 王之江, 潘垣

College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Key Laboratory of Fusion and Advanced Electromagnetic Technology of Ministry of Education, Wuhan 430074, China

收稿日期:2010-08-17 修回日期:2010-09-06 出版日期:2011-02-15 发布日期:2011-02-15
基金资助:
Project supported in part by the National Basic Research Program of China (Grant No. 2008CB717805) and the National Natural Science Foundation of China (Grant No. 50907029).

Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT

Zhu Meng-Zhou(朱孟周)^a)b)^†,Zhuang Ge(庄革)^a)b), Wang Zhi-Jiang(王之江)^a)b),and Pan Yuan(潘垣)^a)b)

^aCollege of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; ^bKey Laboratory of Fusion and Advanced Electromagnetic Technology of Ministry of Education, Wuhan 430074, China

Received:2010-08-17 Revised:2010-09-06 Online:2011-02-15 Published:2011-02-15
Supported by:
Project supported in part by the National Basic Research Program of China (Grant No. 2008CB717805) and the National Natural Science Foundation of China (Grant No. 50907029).

摘要/Abstract

摘要： To improve the understanding of the turbulence intermittency, a detailed investigation of the intermittency of the density fluctuations has been performed in the boundary of J-TEXT. The intermittency of the density fluctuations and its influence on the radial transport are reported. The probability distribution functions of the density fluctuations are not scale-invariant, being inconsistent with the self-organized criticality hypothesis. The underlying dynamics of the intermittency are detected using the quiet-time statistical method. The probability distribution function of the quiet times shows double-power-law regions, indicating the existence of correlations between the successive burst events.

关键词: intermittency, radial transport, J-TEXT

Abstract: To improve the understanding of the turbulence intermittency, a detailed investigation of the intermittency of the density fluctuations has been performed in the boundary of J-TEXT. The intermittency of the density fluctuations and its influence on the radial transport are reported. The probability distribution functions of the density fluctuations are not scale-invariant, being inconsistent with the self-organized criticality hypothesis. The underlying dynamics of the intermittency are detected using the quiet-time statistical method. The probability distribution function of the quiet times shows double-power-law regions, indicating the existence of correlations between the successive burst events.

Key words: intermittency, radial transport, J-TEXT

中图分类号: (Electric and magnetic measurements)

52.70.Ds

52.25.Gj (Fluctuation and chaos phenomena) 52.55.Fa (Tokamaks, spherical tokamaks)

朱孟周, 庄革, 王之江, 潘垣. Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT[J]. 中国物理B, 2011, 20(2): 25204-025204.

Zhu Meng-Zhou(朱孟周), Zhuang Ge(庄革), Wang Zhi-Jiang(王之江), and Pan Yuan(潘垣). Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT[J]. Chin. Phys. B, 2011, 20(2): 25204-025204.

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Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT

Intermittency of the density fluctuations and its influence on the radial transport in the boundary of J-TEXT

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