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Erschienen in:
1980 | OriginalPaper | Buchkapitel
Computational Schemes in General Curvilinear Coordinates for Navier-Stokes Flows
verfasst von : A. Di Carlo, R. Piva, G. Guj
Erschienen in: Proceedings of the Third GAMM — Conference on Numerical Methods in Fluid Mechanics
Verlag: Vieweg+Teubner Verlag
Enthalten in: Professional Book Archive
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The geometrical versatility obtained through boundary fitted mappings, requires an appropriate extension of the Cartesian F.D. schemes in order to obtain accurate solutions. The present study shows that the contravariant velocity components located at the cell midsides, generalize in the proper way the MAC scheme to curvilinear meshes. The results indicate also that the assumption of the Cartesian components as variables brings, for distorted grids, to wiggles characterizing a loss of accuracy, peculiar of models based on an improper location of the variables.