Zonal flow triggers the L-H transition in the Experimental Advanced Superconducting Tokamak

Zonal flow triggers the L-H transition in the Experimental Advanced Superconducting Tokamak
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纬向流触发实验性先进超导托卡马克中的 L-H 转变

DOI:
10.1063/1.4737612
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发表时间:
2012-07
期刊:
影响因子:
2.2
通讯作者:
, C.
, C.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Tynan, G. R.;Xu, G. S.;Wan, B. N.;Wang, H. Q.;Guo, H. Y.;Cziegler, I.;Fedorczak, N.;Holl;, C.

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在实验先进超导托卡马克装置上研究了L-H跃迁过程中剪切流与环境湍流之间的动能传递。当从湍流到剪切流的能量传递速率变得与进入湍流的能量输入速率相当时,发生到H模式的转变。由于所观察到的行为表现出几个预测的纬向流的功能,结果表明,纬向流在调解过渡到H-模式中发挥的关键作用。
The kinetic energy transfer between shear flows and the ambient turbulence is investigated in the Experimental Advanced Superconducting Tokamak during the L-H transition. As the rate of energy transfer from the turbulence into the shear flow becomes comparable to the energy input rate into the turbulence, the transition into the H-mode occurs. As the observed behavior exhibits several predicted features of zonal flows, the results show the key role that zonal flows play in mediating the transition into H-mode.
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