Local mesh refinement within a multi-block structured-grid scheme for general flows
A multi-level flow-adaptive mesh-refinement strategy has been formulated and implemented within a structured-grid, multi-block scheme for two-dimensional laminar, transitional and turbulent recirculating flow. Although the locally refined irregular grid-portions are organized as block-structured patches within coarse-grid blocks, a special data structure allows high storage economy to be achieved. Issues of particular interest in the study include the performance of different flow-adaptation sensors based on solution properties and error, and the response of the solution accuracy to inter-grid interpolation practices based on bi-linear, bi-quadratic and compact interpolation. The effectiveness of the local refinement strategy, especially in terms of CPU and memory resources, is examined by reference to four test cases, ranging from an analytically prescribed scalar field over a square domain to a transitional flow over a highly-loaded compressor blade.
multi-level flow-adaptive mesh-refinement strategy
scientific article; zbMATH DE number 1079177