ALLIANCE: Spectral solver for kinetic plasma turbulence

Abstract

The ALLIANCE code is developed to solve a new set of four-dimensional electromagnetic drift-kinetic equations in slab geometry [J. Plasma Phys. 88 905880117 (2022)]. The nonlinear equations are useful for the study of magnetized plasma systems at scales comparable to, or larger than the ion gyroradius. In particular, it is suited for the study the kinetic turbulent cascade in astrophysical plasma, while preserving finite Larmor radius effects at the fluid-kinetic transition. The equations solved are in spectral Fourier-Laguerre-Hermite form, a pseudo-spectral approach is used for the nonlinear terms, and the code is parallelised over multiple directions. After a presentation of the code, validation runs are shown, and benchmarks for serial and parallel computations are presented.

References in corpus (11)

• Small Scale Energy Cascade of the Solar Wind Turbulence
• Recent progress in astrophysical plasma turbulence from solar wind observations
• Multiscale nature of the dissipation range in gyrokinetic simulations of Alfvénic turbulence
• Gyrokinetic turbulence: a nonlinear route to dissipation through phase space
• The Structure of Plasma Heating in Gyrokinetic Alfvénic Turbulence
• The energetic coupling of scales in gyrokinetic plasma turbulence
• Fourier-Hermite spectral representation for the Vlasov-Poisson system in the weakly collisional limit
• The Radial Dependence of Proton-scale Magnetic Spectral Break in Slow Solar Wind during PSP Encounter 2
• Local Gyrokinetic Collisional Theory of the Ion-Temperature Gradient Mode
• A Hamiltonian gyrofluid model based on a quasi-static closure
• Four-dimensional equations for the study of electromagnetic plasma turbulence in a drift kinetic limit