Avaliação numerica de esquemas para equação eliptica de transporte conectivo-difuso

AUTOR(ES)
DATA DE PUBLICAÇÃO

1994

RESUMO

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 Southwell scheme, five-node skew-exponential scheme, quadratic upstream scheme and sixnode skew-exponential scheme. These schemes are compared in terms of accuracy, stability and computational time. The results suggests the six-node skew-exponential sheme as the most satisfactory in a general way, being among the best schemes in several cases, and never among the worst ones

ASSUNTO(S)

diferenças finitas equações diferenciais elipticas

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