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Uma formulacáo de volumes finitos para a soluçáo de problemas convectivos-difusivos,para quaisquer números de Peclet

Authors: Fernandes, Carlos M.; Fortes, Mauri;

Uma formulacáo de volumes finitos para a soluçáo de problemas convectivos-difusivos,para quaisquer números de Peclet

Abstract

Apresenta-se uma metodologia de volumes finitos para solucáo de problemas convectivos difusivos, que pode ser aplicada a escoamentos envolvendo quaisquer valores de números locais de Peclet. O método tem por base a integracáo do termo de adveccáo ao longo da linha de corrente e uma integras50 especial dos termos difusivos, pela utilizaciio de médias de fluxos nas fronteiras dos volumes de controle. O método proposto mostrou-se bastante eficaz e acurado para resolver problemas complexos que normalmente levam a dispersoes e difusóes numéricas.

A finite volume method for the solution of convective-diffusive problems is presented, which can be applied to flows with any Peclet numbers. The method is based on the integration of the advective term along a stream line and a special integration of the diffusive terms, using average flow at the boundary at the control volumes. The proposed method has shown to be efficient and acurate in complex applications normally leading to numeric dispersion and diffusion.

Peer Reviewed

Country
Spain
Keywords

Elements finits, Mètode dels -- Anàlisi numèrica, Numerical Methods, Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits, Elements finits, Mètode dels -- Anàlisi numèrica, :Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits [Àrees temàtiques de la UPC]

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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