Central Differencing Schemes
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Central schemes for porous media flows
We are concerned with central differencing schemes for solving scalar hyperbolic conservation laws arising in the simulation of multiphase flows in heterogeneous porous media. We compare the Kurganov-Tadmor (KT) [3] semi-discrete central scheme with the Nessyahu-Tadmor (NT) [27] central scheme. The KT scheme uses more precise information about the local spee
Computational & Applied Mathematics. Publicado em: 2009
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2. Computational modeling and simulation of three-phase flows in heterogeneous petroleum reservoirs / Modelagem e simulação computacional de escoamentos trifásicos em reservatórios de petróleo heterogêneos
Neste trabalho é apresentado um novo método acurado com passo de tempo fracionário, baseado em uma técnica de decomposição de operadores, para a solução numérica de um sistema governante de equações diferenciais parciais que modela escoamento trifásico água-gás-óleo imiscível em reservatórios de petróleo heterogêneos no qual os efeitos de
Publicado em: 2007
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3. Numerical study on mixed convection in a horizontal flow past a square porous cavity using UNIFAES scheme
Mixed convection on the flow past a heated length and past a porous cavity located in a horizontal wall bounding a saturated porous medium is numerically simulated. The cavity is heated from below. The steady-state regime is studied for several intensities of the buoyancy effects due to temperature variations. The influences of Péclet and Rayleigh numbers o
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000
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4. Avaliação numerica de esquemas para equação eliptica de transporte conectivo-difuso
This work presents a study about five finite difference schemes applied to the numerical solution of convective diffusive transport equation of heat, momentum or species mass. The case of parallel flow is employed where the analysed property is expressed in two-dimensional coordinates. The schemes are the second order ones central differencing, Allen and Sou
Publicado em: 1994