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Computing Different Modes on Cathodes of DC Glow and High-Pressure Arc Discharges: Time-Dependent Versus Stationary Solvers

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Resumo:Complex behavior can appear in the modeling of gas discharges even in apparently simple steady-state situations. Time-dependent solvers may fail to deliver essential information in such cases. One of such cases considered in this work is the 1D DC discharge. The other case is represented by multiple multidimensional solutions existing in the theory of DC discharges and describing modes of current transfer with different patterns of spots on the cathodes. It is shown that, although some of the solutions, including those describing beautiful self organized patterns, can be computed by means of a time-dependent solver, in most examples results of time-dependent modeling are at best incomplete. In most examples, numerical stability of the time dependent solver was not equivalent to physical stability.
Autores principais:Almeida, Pedro G. C
Outros Autores:Benilov, Mikhail S.; Cunha, Mário D.; Gomes, José G. L.
Assunto:Computing different modes Cathodes of DC glow High-pressure Arc discharges Time-dependent versus stationary solvers . Faculdade de Ciências Exatas e da Engenharia
Ano:2017
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade da Madeira
Idioma:inglês
Origem:DigitUMa - Repositório da Universidade da Madeira

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