Grid Adaption Based on Modified Anisotropic Diffusion Equations Formulated in the Parametric Domain

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Hagmeijer, R. (1994) Grid Adaption Based on Modified Anisotropic Diffusion Equations Formulated in the Parametric Domain. Journal of Computational Physics, 115 (1). pp. 169-183.

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Abstract:A new grid-adaption algorithm for problems in computational fluid dynamics is presented. The basic equations are derived from a variational problem formulated in the parametric domain of the mapping that defines the existing grid. Modification of the basic equations provides desirable properties in boundary layers. The resulting modified anisotropic diffusion equations are solved for the computational coordinates as functions of the parametric coordinates and these functions are numerically inverted. Numerical examples show that the algorithm is robust, that shocks and boundary layers are well-resolved on the adapted grid, and that the flow solution becomes a globally smooth function of the computational coordinates.
Item Type:Article
Copyright:© 1994 Academic Press
Faculty:
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/58055
Official URL:http://dx.doi.org/10.1006/jcph.1994.1185
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