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6. Reading and Manipulating Grids

FLUENT can import different types of grids from various sources. You can modify the grid by translating or scaling node coordinates, partitioning the cells for parallel processing, reordering the cells in the domain to decrease bandwidth, and merging or separating zones. You can convert all 3D meshes to polyhedral cells except pure hex meshes. Hexahedral cells are preserved during conversion. You can also obtain diagnostic information on the grid, including memory usage and simplex, topological, and domain information. You can find out the number of nodes, faces, and cells in the grid, determine the minimum and maximum cell volumes in the domain, and check for the proper numbers of nodes and faces per cell. These and other capabilities are described in the following sections.

See Chapter  26 for information about adapting the grid based on solution data and related functions, and Section  31.5 for details on partitioning the grid for parallel processing.




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