On the possibility of limit-cycle-state of peeling mode near stability boundary in the quiescent H-mode
On the possibility of limit-cycle-state of peeling mode near stability boundary in the quiescent H-mode
复制标题
静态H模中剥离模接近稳定边界的极限环态的可能性
DOI：
10.1088/1361-6587/abcab2
复制
发表时间：
2020
影响因子：
2.2
通讯作者：
Itoh Sanae-I
中科院分区：
文献类型：
--
作者：
Itoh Kimitaka;Kamiya Kensaku;Aiba Nobuyuki;Itoh Sanae-I
本文提出了一种边缘谐波振荡的模型，在该模型中，稳态相干模维持在几乎线性的相位，正如在JT-60 U中所观察到的那样。我们研究了剥离模振幅和边缘压力梯度的耦合动力学。预测了极限环振荡。剥离模式（几乎处于线性相位）处于振幅调制的动态稳态。在这个模型中，时间尺度的变化，指定的磁结构（如磁剪切和边缘等离子体电流）的参数被假定为慢得多，因此，从极限环动力学解耦。极限环状态出现的条件如图所示。调制的振荡频率由剥离模式的典型增长率和剥离模式的压力梯度附加损失率的混合平均值给出。
A model is proposed for the edge harmonic oscillation, in which the stationary coherent mode is sustained in the almost linear phase as has been observed in JT-60U. We study the coupled dynamics of the peeling mode amplitude and edge pressure gradient. The limit cycle oscillation is predicted. The peeling mode (which is almost in the linear phase) is in a dynamical stationary state with amplitude modulation. In this model, the time scales for the change of parameters that specify magnetic structures (such as magnetic shear and edge plasma current) are assumed to be much slower, so that are decoupled from the limit cycle dynamics. The condition that the limit cycle state appears is shown. The oscillation frequency of the modulation is given by the hybrid mean of the typical growth rate of the peeling mode and the additional loss rate of pressure gradient by the peeling mode.
影响因子：
2.2
作者：
B. Grierson;K. Burrell;R. Nazikian;W. Solomon;A. Garofalo;E. Belli;G. Staebler;M. Fenstermacher;G. McKee;T. Evans;D. Orlov;Sterling P. Smith;C. Chrobak;C. Chrystal;DIII-D Team
通讯作者：
B. Grierson;K. Burrell;R. Nazikian;W. Solomon;A. Garofalo;E. Belli;G. Staebler;M. Fenstermacher;G. McKee;T. Evans;D. Orlov;Sterling P. Smith;C. Chrobak;C. Chrystal;DIII-D Team
DOI：
10.1063/1.860132
发表时间：
1992-09-01
期刊：
PHYSICS OF FLUIDS B-PLASMA PHYSICS
影响因子：
--
作者：
ITOH, K;ICHIGUCHI, K;ITOH, SI
通讯作者：
ITOH, SI
轴对称环形等离子体中电阻气球模式的两个流体方程
影响因子：
2.2
作者：
J. Connor;R. Hastie
通讯作者：
R. Hastie