Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition

doi:10.1088/1674-1056/27/6/065201

中国物理B ›› 2018, Vol. 27 ›› Issue (6): 65201-065201.doi: 10.1088/1674-1056/27/6/065201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition

Dan-Dan Cao(曹丹丹), Feng Wan(弯峰), Ya-Juan Hou(侯雅娟), Hai-Bo Sang(桑海波), Bai-Song Xie(谢柏松)

1 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
2 Beijing Radiation Center, Beijing 100875, China

收稿日期:2018-01-09 修回日期:2018-03-19 出版日期:2018-06-05 发布日期:2018-06-05
通讯作者: Hai-Bo Sang E-mail:sanghb@bnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos.11305010 and 11475026) and the Joint Foundation of the National Natural Science Foundation and China Academy of Engineering Physics (Grant No.U1530153).

Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition

Dan-Dan Cao(曹丹丹)^1,2, Feng Wan(弯峰)^1,2, Ya-Juan Hou(侯雅娟)^1,2, Hai-Bo Sang(桑海波)^1,2, Bai-Song Xie(谢柏松)^1,2

1 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
2 Beijing Radiation Center, Beijing 100875, China

Received:2018-01-09 Revised:2018-03-19 Online:2018-06-05 Published:2018-06-05
Contact: Hai-Bo Sang E-mail:sanghb@bnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos.11305010 and 11475026) and the Joint Foundation of the National Natural Science Foundation and China Academy of Engineering Physics (Grant No.U1530153).

摘要/Abstract

摘要：

The dynamics of the confinement transition from L mode to H mode (LH) is investigated in detail theoretically via the extended three-wave coupling model describing the interaction of turbulence and zonal flow (ZF) for the first time. Thereinto, turbulence is divided into a positive-frequency (PF) wave and a negative-frequency (NF) one, and the gradient of pressure is added as the auxiliary energy for the system. The LH confinement transition is observed for a sufficiently high input energy. Moreover, it is found that the rotation direction of the limit cycle oscillation (LCO) of PF wave and pressure gradient is reversed during the transition. The mechanism is illustrated by exploring the wave phases. The results presented here provide a new insight into the analysis of the LH transition, which is helpful for the experiments on the fusion devices.

关键词: limit cycle oscillation, three-wave interaction, confinement transition, turbulence

Abstract:

Key words: limit cycle oscillation, three-wave interaction, confinement transition, turbulence

中图分类号: (Magnetic confinement and equilibrium)

52.55.-s

52.35.Ra (Plasma turbulence) 52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)) 05.60.-k (Transport processes)

曹丹丹, 弯峰, 侯雅娟, 桑海波, 谢柏松. Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition[J]. 中国物理B, 2018, 27(6): 65201-065201.

Dan-Dan Cao(曹丹丹), Feng Wan(弯峰), Ya-Juan Hou(侯雅娟), Hai-Bo Sang(桑海波), Bai-Song Xie(谢柏松). Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition[J]. Chin. Phys. B, 2018, 27(6): 65201-065201.

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Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition

Reversed rotation of limit cycle oscillation and dynamics of low-intermediate-high confinement transition

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