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- W2007686712 abstract "A high-order semi-analytic finite difference scheme is presented to overcome degradation of numerical performance when applied to two-dimensional elliptic problems containing singular points. The scheme, called Least-Square Singular Finite Difference Scheme (L-S SFDS), applies an explicit functional representation of the exact solution in the vicinity of the singularities, and a conventional finite difference scheme on the remaining domain. It is shown that the L-S SFDS is pollution free, i.e., no degradation in the convergence rate occurs because of the singularities, and the coefficients of the asymptotic solution in the vicinity of the singularities are computed as a by-product with a very high accuracy. Numerical examples for the Laplace and Poisson equations over domains containing re-entrant corners or abrupt changes in the boundary conditions are presented. c 1998 John Wiley & Sons, Inc. Numer Methods Partial Differential Eq 14: 281{296, 1998" @default.
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- W2007686712 date "1998-05-01" @default.
- W2007686712 modified "2023-10-16" @default.
- W2007686712 title "An accurate semi-analytic finite difference scheme for two-dimensional elliptic problems with singularities" @default.
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- W2007686712 doi "https://doi.org/10.1002/(sici)1098-2426(199805)14:3<281::aid-num1>3.0.co;2-i" @default.
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