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Poisson equation solver with fourth-order accuracy by using interpolated differential operator scheme. (English) Zbl 0999.65114

Summary: A Poisson equation solver with fourth-order spatial accuracy is developed by using the interpolated differential operator (IDO) scheme. The number of grids required for obtaining the results of numerical computation with the same accuracy as that by the second-order center finite difference method is drastically reduced. The consistency is confirmed to the use of the multigrid method and the red-black algorithm. The decrease of the CPU time by the multigrid method and by the parallel computing indicates the applicability of the IDO Poisson solver to large scale problems.

MSC:

65N06 Finite difference methods for boundary value problems involving PDEs
65N55 Multigrid methods; domain decomposition for boundary value problems involving PDEs
35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation
65Y05 Parallel numerical computation
65N15 Error bounds for boundary value problems involving PDEs
Full Text: DOI

References:

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