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Descarga de filamentos modelada numa configuração 1,5D
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ISBN10: 6208962757
ISBN13: 9786208962753
Publisher: Edicoes Nosso Conhecimento
Published: Jun 17 2025
Pages: 84
Weight: 0.27
Height: 0.20 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786208962753
Publisher: Edicoes Nosso Conhecimento
Published: Jun 17 2025
Pages: 84
Weight: 0.27
Height: 0.20 Width: 6.00 Depth: 9.00
Language: Portuguese
Este trabalho é dedicado à modelação numérica em 1.5D do transporte de partÃculas carregadas em descargas fora de equilÃbrio do tipo filamento. A configuração escolhida é do tipo ponta plana no meio gasoso azoto. Optámos por um modelo hidrodinâmico (modelo de deriva-difusão) derivado do acoplamento auto-consistente dos dois primeiros momentos da equação de Boltzmann à equação de Poisson. As equações de conservação para partÃculas carregadas sujeitas a fortes gradientes de densidade e variações do campo elétrico foram resolvidas utilizando o esquema numérico de Scharfetter e Gummel de ordem zero estabelecido por Kulikovsky. A equação de Poisson é resolvida em 2D utilizando o método do disco, a fim de ter em conta a expansão radial da descarga (presença de cargas espaciais muito grandes).
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