All Physics Faculty Publications
Document Type
Article
Journal/Book Title/Conference
Physics of Plasma
Volume
21
Publisher
AIP Publishing
Publication Date
12-23-2014
Abstract
Electron parallel closures for heat flow, viscosity, and friction force are expressed as kernel-weighted integrals of thermodynamic drives, the temperature gradient, relative electron-ion flow velocity, and flow-velocity gradient. Simple, fitted kernel functions are obtained for arbitrary collisionality from the 6400 moment solution and the asymptotic behavior in the collisionless limit. The fitted kernels circumvent having to solve higher order moment equations in order to close the electron fluid equations. For this reason, the electron parallel closures provide a useful and general tool for theoretical and computational models of astrophysical and laboratory plasmas.
Recommended Citation
Ji, Jeong-Young and Held, Eric D., "Electron Parallel Closures for Arbitrary Collisionality" (2014). All Physics Faculty Publications. Paper 2016.
https://digitalcommons.usu.edu/physics_facpub/2016
