Simulation of density fluctuations before the L-H transition for Hydrogen and Deuterium plasmas in the DIII-D tokamak using the BOUT++ code
作者: Y.M. WangX.Q. XuZ. YanG.R. MckeeB.A. GriersonT.Y. XiaX. Gao
作者单位: 1Institute of Plasmas Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
2Lawrence Livermore National Laboratory, Livermore, CA 94550, United States of America
3University of Wisconsin-Madison, Madison, WI 53706, United States of America
4Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, United States of America
刊名: Nuclear Fusion, 2018, Vol.58 (2)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/aa9f7d
原始语种摘要: A six-field two-fluid model has been used to simulate density fluctuations. The equilibrium is generated by experimental measurements for both Deuterium (D) and Hydrogen (H) plasmas at the lowest densities of DIII-D low to high confinement (L-H) transition experiments. In linear simulations, the unstable modes are found to be resistive ballooning modes with the most unstable mode number n = 30 or . The ion diamagnetic drift and convection flow are balanced when the radial electric field ( E r ) is calculated from the pressure profile without net flow. The curvature drift plays an important role in this stage. Two poloidally counter propagating modes are found in the nonlinear simulation of the D plasma at electron density m−3 near the separatrix while a single ion...
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关键词翻译
关键词翻译
  • tokamak 托卡马克
  • code 符号
  • transition 转移
  • density 密度
  • modes 模式
  • electron 电子
  • heating 加热
  • atomic 原子的
  • single 单独的
  • plasma 深绿玉髓