Wave kinetic equation for inhomogeneous drift-wave turbulence beyond the quasilinear approximation
作者: D. E. RuizM. E. GlinskyI. Y. Dodin
作者单位: 11 Sandia National Laboratories , P.O. Box 5800 , Albuquerque , New Mexico 87185 , USA
2 2 Princeton Plasma Physics Laboratory , Princeton , New Jersey 08543 , USA
3 3 Department of Astrophysical Sciences , Princeton University , Princeton , New Jersey 08544 , USA
刊名: Journal of Plasma Physics, 2019, Vol.85 (1)
来源数据库: Cambridge University Press Journal
DOI: 10.1017/S0022377818001307
原始语种摘要: The formation of zonal flows from inhomogeneous drift-wave (DW) turbulence is often described using statistical theories derived within the quasilinear approximation. However, this approximation neglects wave–wave collisions. Hence, some important effects such as the Batchelor–Kraichnan inverse-energy cascade are not captured within this approach. Here we derive a wave kinetic equation that includes a DW collision operator in the presence of zonal flows. Our derivation makes use of the Weyl calculus, the quasinormal statistical closure and the geometrical-optics approximation. The obtained model conserves both the total enstrophy and energy of the system. The derived DW collision operator breaks down at the Rayleigh–Kuo threshold. This threshold is missed by homogeneous-turbulence theory...
全文获取路径: Cambridge U Press  (合作)
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影响因子:0.755 (2012)

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关键词翻译
关键词翻译
  • approximation 近似
  • drift 水平巷道
  • turbulence 湍流紊流
  • inhomogeneous 不均质的
  • quasilinear 准线性的
  • threshold 阈值
  • understand 理解
  • kinetic 动的
  • missed 未达到的
  • beyond 在...那边