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C∞-Interpolation of Discrete Fields on Regular and Irregular Grids

✍ Scribed by Massimiliano Giona; Stefano Cerbelli

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
273 KB
Volume
176
Category
Article
ISSN
0021-9991

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✦ Synopsis

The article proposes a simple C ∞ interpolation of discretized lattice fields on regular and irregular grids. The method is based on localized C ∞ but not analytic basis functions, which vanish outside an open set (region of influence). As a result, the interpolating fields at a point depend exclusively on the nodal values within the region of influence. The method can be applied to generic fields whose support is a limited set of n-dimensional space, starting from discretized values given on regular or irregular grids. Particular attention is focused on the interpolation of CFD-computed velocity fields that give rise to Lagrangian chaos.

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