A boundary value “reservoir problem” and boundary conditions for multi-moment multifluid simulations of sheaths
- 1 January 2021
- journal article
- research article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 28 (1), 014501
- https://doi.org/10.1063/5.0024510
Abstract
Multifluid simulations of plasma sheaths are increasingly used to model a wide variety of problems in plasma physics ranging from global magnetospheric flows around celestial bodies to plasma–wall interactions in thrusters and fusion devices. For multifluid problems, accurate boundary conditions to model an absorbing wall that resolves a classical sheath remain an open research area. This work justifies the use of vacuum boundary conditions for absorbing walls to show comparable accuracy between a multifluid sheath and lower moments of a continuum-kinetic sheath.Keywords
Funding Information
- U.S. Department of Energy (DE-SC0018276)
- U.S. Department of Energy (DE-AR0001263)
- U.S. Department of Energy (DE-AC02-09CH11466)
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