Author(s): A. G. L. Borthwick; A. Saalehi
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Keywords: No Keywords
Abstract: Recent advances in grid generation offer the prospect of much improved definition of boundaries and flow features, such as wakes. Hierarchical quadtree grids are capable of a fractal-like quality near boundaries, where the fineness of the mesh is controlled by the resolution level and the spacing of boundary seeding points. This paper describes the generation of a quadtree mesh, its conversion into a triangularised conforming finite element mesh and applications to laminar flow past single and multiple cylinders. The results, which are preliminary, indicate that the method leads to reasonable flow patterns. Extension to the flow past awkward shaped bodies is straightforward, as is adaptivity, though neither are considered in detail herein.
Year: 1995