Four-dimensional drift-kinetic model for scrape-off layer plasmas
arXiv:2008.09401 · doi:10.1063/5.0024968
Abstract
A four-dimensional plasma model able to describe the scrape-off layer region of tokamak devices at arbitrary collisionality is derived in the drift-reduced limit. The basis of the model is provided by a drift-kinetic equation that retains the full non-linear Coulomb collision operator and describes arbitrarily far from equilibrium distribution functions. By expanding the dependence of distribution function over the perpendicular velocity in a Laguerre polynomial basis and integrating over the perpendicular velocity, a set of four-dimensional moment equations for the expansion coefficients of the distribution function is obtained. The Coulomb collision operator, as well as Poisson's equation, are evaluated explicitly in terms of perpendicular velocity moments of the distribution function.
12 pages
References in corpus (16)
- BOUT++: a framework for parallel plasma fluid simulations
- An experimental investigation on the high density transition of the Scrape-off Layer transport in ASDEX Upgrade
- Reduced fluid-kinetic equations for low-frequency dynamics, magnetic reconnection and electron heating in low-beta plasmas
- 3D Simulations of Plasma Filaments in the Scrape Off Layer: A Comparison with Models of Reduced Dimensionality
- Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma
- Laguerre-Hermite Pseudo-Spectral Velocity Formulation of Gyrokinetics
- Conservative Discontinuous Galerkin Schemes for Nonlinear Fokker-Planck Collision Operators
- Collisional transport across the magnetic field in drift-fluid models
- Viriato: a Fourier-Hermite spectral code for strongly magnetised fluid-kinetic plasma dynamics
- A gyrokinetic model for the plasma periphery of tokamak devices
- A Drift-Kinetic Analytical Model for SOL Plasma Dynamics at Arbitrary Collisionality
- Nonlinear Gyrokinetic Coulomb Collision Operator
- Theory of the Drift-Wave Instability at Arbitrary Collisionality
- Linear Theory of Electron-Plasma Waves at Arbitrary Collisionality
- Solution to a collisionless shallow-angle magnetic presheath with kinetic ions
- Non-local parallel transport in BOUT++