Theory of gyrokinetic velocity moment and its application for zonal flows in a tokamak plasma
作者: Debing ZhangYingfeng XuZongliang DaiShaojie Wang
刊名: Nuclear Fusion, 2020, Vol.60 (4)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/ab72e1
原始语种摘要: The calculation of the velocity moment in the gyrokinetic theory and its application in the study of zonal flows in a tokamak plasma are investigated. Based on the scalar invariance property, the expression for the particle velocity in the gyrocenter coordinates is obtained, and a method to systematically calculate the velocity moment in the gyrokinetic theory is proposed, especially for the calculation of the first-order perpendicular velocity moment. The kinetic equation which describes the evolution of the perturbed distribution on the meso-scale of the zonal flow is derived. The effects of the turbulent particle flux, the turbulent energy flux, the turbulent toroidal Reynolds stress and the turbulent poloidal Reynolds stress (PRS are explicitly included in the phase-space particle...
全文获取路径: IOP 

  • velocity 速度
  • zonal 带状的
  • equation 方程
  • tokamak 托卡马克
  • moment 
  • Reynolds 雷诺
  • turbulent 紊聊
  • toroidal 环面
  • PRS 
  • radial 放射状的