Constrained-interior interpolating surfaces

G. R. Shevare; S. P. Mudur

doi:10.1117/12.19737

1 August 1990 Constrained-interior interpolating surfaces

G. R. Shevare, S. P. Mudur

Proceedings Volume 1251, Curves and Surfaces in Computer Vision and Graphics; (1990) https://doi.org/10.1117/12.19737
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

Abstract

Transfinite interpolation techniques have been extended to cover rectangular patches having interior constraints. Interior constraints are specified along isoparametric lines defined partly are wholly over the parametric range. The technique helps incorporate additional data for controlling both the shape and parainetrisation of the interior of a surface. An immediate application for the technique is found in the area of computational fluid dynamics (CFD) where these techniques are used to discretise the computational domain. In CFD the isopararnetric surfaces are made to coincide with the boundary of domain and fluid dynamic data at grid points (Points of intersection of isoparametric lines) is computed by solving partial differential equations governing fluid flow. The technique suggested in this paper gives powerful control over the grid generation process. The use of this technique is demonstrated by interpolating doubly curved analytical surfaces such as ellipsoids using contour plots for comparison.

Citation Download Citation

G. R. Shevare and S. P. Mudur "Constrained-interior interpolating surfaces", Proc. SPIE 1251, Curves and Surfaces in Computer Vision and Graphics, (1 August 1990); https://doi.org/10.1117/12.19737

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