2010
DOI: 10.1590/s0102-261x2010000100012
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Modelagem numérica de escoamento transiente em meios porosos aleatórios saturados usando a expansão de Karhunen-Loève

Abstract: RESUMO. Um requisito importante de um modelo geofísicoé a capacidade de quantificar a incerteza associadaà imprecisão e/ou a escassez de dados de campo. Uma maneira de realizar esta quantificaçãoé descrever o modelo por meio de equações diferenciais cujos parâmetros associados a propriedades materiais são processos estocásticos. Os métodos de elementos finitos estocásticos são apresentados como um procedimento eficiente na caracterização da solução de equações de evolução com coeficientes estocásticos. Os conc… Show more

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“…(i) the most formal method, which uses functional analysis to study the governing equation of a given problem with non-deterministic variables, and (ii) one which uses numerical methods or mathematical techniques, such as Monte Carlo, to statistically understand the problem. Others techniques, based for example on Galerkin method, are discussed and presented in Ghanem (1999), Deb et al (2001), Babuška et al (2004), Wan & Karniadakis (2006), Ma & Zabaras (2008) and Azevedo (2009).…”
Section: Introductionmentioning
confidence: 99%
“…(i) the most formal method, which uses functional analysis to study the governing equation of a given problem with non-deterministic variables, and (ii) one which uses numerical methods or mathematical techniques, such as Monte Carlo, to statistically understand the problem. Others techniques, based for example on Galerkin method, are discussed and presented in Ghanem (1999), Deb et al (2001), Babuška et al (2004), Wan & Karniadakis (2006), Ma & Zabaras (2008) and Azevedo (2009).…”
Section: Introductionmentioning
confidence: 99%