Abstract
Collisional and turbulent transport processes in toroidal plasmas with large toroidal flows on the order of the ion thermal velocity are formulated based on the modern gyrokinetic theory. Governing equations for background and turbulent electromagnetic fields and gyrocenter distribution functions are derived from the Lagrangian variational principle with effects of collisions and external sources taken into account. Noether’s theorem modified for collisional systems and the collision operator given in terms of Poisson brackets are applied to derivation of the particle, energy, and toroidal momentum balance equations in the conservative forms which are desirable properties for long-time global transport simulation. The resultant balance equations are shown to include the classical, neoclassical, and turbulent transport fluxes which agree with those obtained from the conventional recursive formulations.
Highlights
Gyrokinetic theories and simulations are powerful means to investigate microinstabilities and turbulence in fusion and astrophysical plasmas (Krommes 2012; Garbet et al 2010; Idomura et al 2006; Dimits et al 2000; Schekochihin et al 2009)
Collisional and turbulent transport processes in toroidal plasmas with large toroidal flows on the order of the ion thermal velocity are formulated based on the modern gyrokinetic theory
Conservation of the total energy and momentum was obtained in the gyrokinetic field theory (Sugama 2000) where all governing equations for the distribution functions and the electromagnetic fields are derived from the Lagrangian which describes the whole system consisting of particles and fields
Summary
Gyrokinetic theories and simulations are powerful means to investigate microinstabilities and turbulence in fusion and astrophysical plasmas (Krommes 2012; Garbet et al 2010; Idomura et al 2006; Dimits et al 2000; Schekochihin et al 2009).
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