Roles of turbulence– and pressure-gradient–induced flows in triggering H-mode at marginal heating power on HL-2A tokamak
作者: J. ChengJ. Q. DongL. W. YanZ. X. HeH. S. XieY. XiaoK. J. ZhaoZ. H. HuangJ. Q. XuL. LiuZ. B. ShiW. L. ZhongD. L. YuX. Q. JiY. HuangX. M. SongQ. W. YangX. T. DingX. L. ZouX. R. DuanHL-2A Team
作者单位: 1Southwestern Institute of Physics - P. O. Box 432, Chengdu, Sichuan 610041, China
2Institute for Fusion Theory and Simulation, Zhejiang University - Hangzhou 310027, China
3CEA, IRFM - F-13108 Saint-Paul-lez-Durance, France
刊名: EPL (Europhysics Letters), 2016, Vol.116 (1)
来源数据库: Institute of Physics Journal
DOI: 10.1209/0295-5075/116/15001
原始语种摘要: A qualitative model which includes three loops of zonal flow vs. turbulence and turbulence vs. pressure gradient is proposed for the experimentally observed two types of limit cycle oscillations (LCOs) and low-intermediate-high (L-I-H) confinement transitions. The experimental evidences supporting the model and revealing the roles of turbulence– and pressure-gradient–induced flows in triggering the H-mode at marginal heating power in tokamak plasmas are presented. The dominant role played by pressure-gradient–induced flows in I-phase of type-J LCO as well as I-H transition is demonstrated, along with that done by the turbulent-Reynolds-stress–driven zonal flows in the L-I transition as well as I-phase of type-Y LCO. The trigger and conditions for the I-H transition are identified from the...
全文获取路径: IOP 
影响因子:2.26 (2012)

  • tokamak 托卡马克
  • gradient 倾斜度
  • turbulence 湍流紊流
  • heating 加热
  • transition 转移
  • triggering 起动
  • induced 感应的
  • pressure 压力
  • marginal 境界的
  • zonal 带状的