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arXiv · 2011.00154

A boundary value "reservoir problem" and boundary conditions for multi-moment multifluid simulations of sheaths

Petr Cagas·Ammar Hakim·Bhuvana Srinivasan
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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 remains 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.

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Petr Cagas, Ammar Hakim, Bhuvana Srinivasan. 2020-10-31. A boundary value "reservoir problem" and boundary conditions for multi-moment multifluid simulations of sheaths. https://doi.org/10.1063/5.0024510

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