The scale-to-scale energy transfers correlated with the development of turbulence in toroidal plasmas
作者: Yong ShenJ.Q. DongZ.B. ShiY. NagayamaY. HiranoK. YambeS. YamaguchiK.J. ZhaoJ.Q. Li
作者单位: 1Southwestern Institute of Physics, Chengdu 610041, China
2Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, China
3National Institute for Fusion Science, Toki 509-5292, Japan
4National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan
5Kansai University, Suita 564-8680, Japan
6College of Nuclear Science and Engineer, East China University of Technology, Nanchang 330013, People’s Republic of China
刊名: Nuclear Fusion, 2019, Vol.59 (4)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/aafaac
原始语种摘要: Two different directions of scale-to-scale energy transfer that corresponds to forward and inverse energy cascades, respectively, were clarified in toroidal plasma turbulence by means of experimental analysis. In the present work we first report the evidence that the turbulence dominated by broad wavenumber spectrum was developed under the action of forward (direct) energy cascade in a reversed field pinch (RFP) plasma, while the generation of GAM zonal flow (ZF) was related with the energy concentrating into low frequency region from higher frequency region due to inverse energy cascade in a tokamak plasma. The two evidences are compared. The results indicate a modulation mechanism in turbulence which is relative to the generation or development of specific turbulent flows. This hints a...
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  • energy 能量
  • turbulence 湍流紊流
  • toroidal 环面
  • development 开发
  • scale 度盘
  • plasma 深绿玉髓
  • concentrating 浓缩
  • reversed 倒转的
  • cascade 小瀑布
  • correlated 相关