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Study of the effect of the non-orthogonality for non-staggered grids—the theory

✍ Scribed by H. Xu; C. Zhang

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
127 KB
Volume
28
Category
Article
ISSN
0271-2091

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✦ Synopsis

An investigation has been conducted to determine the effect of the grid non-orthogonality on the convergence behavior of two-dimensional lid-driven cavity flows. The relevant theory is presented in this article. In the present work, the contravariant velocity fluxes are used as the dependent variables on non-orthogonal, non-staggered grids. The momentum equations retain a strongly conservative form. Two practices for treating the momentum interpolation method in general curvilinear co-ordinates are presented. In each practice, the momentum interpolation formulations with and without velocity underrelaxation factor are considered. The discretization equations are solved using the SIMPLE, SIMPLEC and SIMPLER algorithms.

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