2017-02-072017-02-072016-04-15QUARESMA, Sil Franciley dos Santos. Análise da convecção natural no escoamento laminar em cavidades parcialmente preenchidas com meios porosos utilizando transformadas integrais. Orientador: João Nazareno Nonato Quaresma; Coorientador: Emanuel Negrão Macedo. 2016. 137 f. Tese (Doutorado em Engenharia de Recursos Naturais da Amazônia) – Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2016. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/7599. Acesso em:.https://repositorio.ufpa.br/handle/2011/7599A numerical study is performed to analyze the natural convection in a vertical rectangular enclosure that is partially filled with a porous medium, by the Generalized Integral Transform Technique (GITT). The first studies concerning flow transient in a channel partially filled with porous medium without the effect of natural convection in order to understand the technical solution or problems with interfaces. Two different formulations were studied: the two-domain approach and the single-domain approach. Subsequently a numerical study is performed to analyze the steady-state thermal natural convection fluid flow and heat transfer in a vertical rectangular enclosure that is partially filled with a porous medium. The flow is modeled using the Brinkman- Forchheimer extended Darcy and energy conservation equation was used to predict the heat transfer. The mathematical description of the problem is based on a one-domain formulation of the conservation equations. Finally it carried out the study of double diffusive natural convection, also nominated thermosolutal natural convection in partially porous enclosures. The validity of the so-called one-domain approach used in this case compared to existing results in the literature. A particular class of problems dealing with thermal and double diffusive natural convection mechanisms in partially porous enclosures is presented, and it is shown that this configuration exhibits specific features in terms of the heat and mass transfer characteristics.Acesso AbertoMecânica dos fluídosCalorConvecção naturalTransformadas integraisMeios porososTransferência de calorTécnica da Transformada Integral Generalizada (GITT)Natural convectionHeat and mass transferPorous mediumDarcy-Brinkman-ForehheimerGeneralized Integral Transform Technique (GITT)Análise da convecção natural no escoamento laminar em cavidades parcialmente preenchidas com meios porosos utilizando transformadas integraisAnalysis of natural convection in laminar flow in cavity enclosure partially filled with a porous media through integral transform methodTeseCNPQ::ENGENHARIAS::ENGENHARIA QUIMICA::TECNOLOGIA QUIMICACNPQ::ENGENHARIAS::ENGENHARIA MECANICA::FENOMENOS DE TRANSPORTECNPQ::ENGENHARIAS::ENGENHARIA MECANICA::FENOMENOS DE TRANSPORTE::MECANICA DOS FLUIDOS