The development of preliminary modifications for an improved full approximation storage method in pressure-based flow solvers (original) (raw)

Abstract

The current work presents necessary geometric modifications to the coarse grids utilized in a full approximation scheme method (FAS). This work path is a preliminary stage to the development of a robust full approximation scheme method which withstand high distortions in the coarse grids of the grid hierarchy. The hierarchies of coarse grids required by the FAS method are commonly constructed using low-quality agglomeration algorithms that deteriorate performance. This work attempts to resolve the problem by altering the agglomeration procedure through a geometric modification to the coarse cells. While the proposed method does not require any complicated or time-consuming agglomeration techniques, its turnout has enhanced the solver stability.

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