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Gama, R.M.S. da; Sampaio, R.
Laboratorio de Computacao Cientifica, Rio de Janeiro (Brazil)1985
Laboratorio de Computacao Cientifica, Rio de Janeiro (Brazil)1985
AbstractAbstract
[en] It is presented a variational formulation for the problem of the flow of an incompressible Newtonian fluid through two, or more, regions. Some of these regions are occupied only by the fluid and others by a saturated mixture of the fluid with a homogeneous rigid porous medium. The boundary between a region of pure fluid and another of mixture is formed by an impermeable interface that allows exchange of momentum but not of mass. The maximum of the functional is the solution of the problem. (Author)
[pt]
E apresentado um funcional cuja maximizacao equivale a solucao de um sistema acoplado de equacoes diferenciais parciais lineares, o qual governa o movimento de um fluido Newtoniano incompressivel atraves de duas (ou mais) regioes, sendo estas regioes de fluido puro (onde so existe o fluido) ou de mistura (onde existe o fluido e um meio poroso pelo qual o fluido escoa). As regioes de fluido puro e de mistura sao separadas por interfaces permeaveis, atraves dos quais existe troca de momentum mas nao existe troca de massa. A titulo de exemplo e resolvido um problema tipico. (Autor)Original Title
Um principio de maximo para escoamentos de fluidos viscosos atraves de regioes de fluido puro e de mistura
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1985; 6 p
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