All Physics Faculty Publications
Document Type
Article
Journal/Book Title/Conference
Physics of Plasmas
Volume
25
Publisher
AIP Publishing
Publication Date
3-2018
Abstract
Linear closures are obtained for arbitrary collisionality for the 3 þ 1 fluid model which includes the evolution of density, flow velocity, and pressure both parallel and perpendicular to a preferred direction, usually a magnetic field. A large set of 6400 moment equations is solved to provide closures that are accurate in the collisional regime and well into the collisionless regime. The closures in the collisionless limit are determined by solving the kinetic equation with a model collision operator. Simple fits for the kernel functions that define the closures are obtained for arbitrary collisionality in wave number space. The results are linearly accurate to within 3% across the entire range of collisionality.
Recommended Citation
Physics of Plasmas 25, 032117 (2018); doi: 10.1063/1.5014996 View online: https://doi.org/10.1063/1.5014996
