Adaptivity techniques for compressible inviscid flows

Abstract To enhance the resolution of numerically simulated flowfields, grid adaptivity is vitally important. Further, to afford complete flexibility in the spatial discretisation of the flow domain both structured, unstructured and combinations of grid types are likely to be required. Hence, the development of grid adaptivity techniques for general grids is important. This paper discusses adaptivity achieved through point enrichment, point derefinement and point movement applied on general grids. A flexible data structure is described together with suitable strategies for adaptively refining a computational grid. Applications are presented of adaptive grid refinement for two-dimensional compressible flow simulation.

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