A Study of Numerical Schemes for Incompressible Fluid Flows

Autores

  • C.M. Oishi
  • J.A. Cuminato
  • V.G. Ferreira
  • M.F. Tomé
  • A. Castelo
  • N. Mangiavacchi

DOI:

https://doi.org/10.5540/tema.2005.06.01.0111

Resumo

The present work is concerned with a study of numerical schemes for solving two-dimensional time-dependent incompressible free-surface fluid flow problems. The primitive variable flow equations are discretized by the finite difference method. A projection method is employed to uncouple the velocity components and pressure, thus allowing the solution of each variable separately (a segregated approach). The diffusive terms are discretized by Implicit Backward and Crank- Nicolson schemes, and the non-linear advection terms are approximated by the high order upwind VONOS (Variable-Order Non-oscillatory Scheme) technique. In order to improved numerical stability of the schemes, the boundary conditions for the pressure field at the free surface are treated implicitly, and for the velocity field explicitly. The numerical schemes are then applied to the simulation of the Hagen-Poiseuille flow, and container filling problems. The results show that the semi-implicit techniques eliminate the stability restriction in the original explicit GENSMAC method.

Referências

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Publicado

2005-06-01

Como Citar

Oishi, C., Cuminato, J., Ferreira, V., Tomé, M., Castelo, A., & Mangiavacchi, N. (2005). A Study of Numerical Schemes for Incompressible Fluid Flows. Trends in Computational and Applied Mathematics, 6(1), 111–120. https://doi.org/10.5540/tema.2005.06.01.0111

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Artigo Original