Abstract: One of the challenging tasks in CFD is the generation of structured or unstructured body-fitted grids around complex three-dimensional geometries. The grid is used to discretize the governing equations in space. The accuracy of the flow solution is therefore tightly coupled to the quality of the grid. We present the most important methodologies for the generation of structured as well as unstructured grids. We start with a detailed description of the various topologies available for structured grids (C, H, and O). We then describe algebraic, elliptic, and hyperbolic methods for the generation of structured grids. We proceed with a discussion of the main approaches employed to generate unstructured grids. We also present methods for the generation of anisotropic grids, or of grids composed of different elements like hexahedra, prisms, pyramids, or tetrahedra. We finally discuss issues of grid quality and its improvement.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 10
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