Efficiency and accuracy aspects of a full-multigrid SIMPLE algorithm for three-dimensional flows
- Univ. Hamburg (Germany). Inst. fuer Schiffbau
This article reports on the analysis of efficiency and accuracy of a full-multigrid SIMPLE algorithm for three-dimensional flows using co-located grids and central difference discretization for both convective and diffusive fluxes. It is shown that the central differencing scheme--contrary to common belief--offers both good convergence properties and high accuracy, even at large Peclet numbers. Accurate solutions, with discretization errors below 0.5%, were obtained for lid-driven flows in a cubic cavity using grids with up to 128{sup 3} (nearly 2.1 million) control volumes. For a grid with 64{sup 3} (262,114) control volumes, solution can be obtained on a personal computer in 5--10 min. The computer code used for the calculations reported here is available from authors on request (free of charge).
- OSTI ID:
- 452167
- Journal Information:
- Numerical Heat Transfer. Part B, Fundamentals, Vol. 31, Issue 1; Other Information: PBD: Jan-Feb 1997
- Country of Publication:
- United States
- Language:
- English
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