Resumo

MENDOZA-RESENDIZ, Alejandro  e  BEREZOWSKY-VERDUZCO, Moisés. Generation of Curvilinear Composite Grids for Computing Two-dimensional Flows. Tecnol. cienc. agua [online]. 2014, vol.5, n.2, pp.111-122. ISSN 2007-2422.

A method to generate composite grids based on boundary-fitted curvilinear coordinate systems is presented. Curvilinear grids have the advantage of accurately describing the shape of the edge of the domain. The main idea is to transform a geometry given in the Cartesian space into a curvilinear coordinate system in which the grid is rectangular. In its traditional form, curvilinear grids require the definition of four axes that delimit the domain, which restricts its use for geometries that cannot be bounded by four edges. The composite grids that are formed by multiple-connected blocks of curvilinear meshes solves this limitation. While the literature shows that some authors use this type of grid for flow modeling, no practical details are provided about the generation of the mesh. This paper outlines a method to generate this kind of grid. The implications for its use in solving two-dimensional flows are also discussed.

Palavras-chave : grid generation; curvilinear coordinates; composite grids; two-dimensional flow.

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