Kinetic closures for unmagnetized and magnetized plasmas

Park, Kyoung-Chan; Ji, Jeong-Young; Lee, Yoonji; Na, Yong-Su

doi:10.1063/5.0177979

Kinetic closures for unmagnetized and magnetized plasmas

Journal Article · Mon Mar 04 00:00:00 EST 2024 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0177979· OSTI ID:2567741

; ; Lee, Yoonji;

Parallel and perpendicular closures with cyclotron resonance effects retained for the five-moment (density, temperature, and flow velocity) fluid equations are derived by solving the kinetic equation with the Bhatnagar–Gross–Krook operator in Fourier space. For parallel propagation, the parallel closures are reduced to those of Ji et al. [Phys. Plasmas 20, 082121 (2013)]. The closures when combined to the fluid equations reproduce the fully kinetic dispersion relation that can be directly derived from the kinetic equation. The closures for the five-moment fluid system can be utilized to derive closures for the extended fluid system, which is demonstrated by deriving closures for the ten-moment system consisting of density, flow velocity, temperature, and viscosity tensor equations.

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Research Organization:: Utah State University, Logan, UT (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-04ER54746; SC0022048

OSTI ID:: 2567741

Alternate ID(s):: OSTI ID: 2369588

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 31; ISSN 1070-664X

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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