A HIGH-ORDER, ANALYTICALLY DIVERGENCE-FREE DISCRETIZATION METHOD FOR DARCY'S PROBLEM

作者:Schraeder Daniela; Wendland Holger
来源:Mathematics of Computation, 2011, 80(273): 263-277.
DOI:10.1090/S0025-5718-2010-02388-9

摘要

We develop and analyze a meshfree discretization method for Darcy's problem. Our approximation scheme is based upon optimal recovery which leads to a collocation scheme using divergence-free positive definite kernels. Besides producing analytically incompressible flow fields, our method can be of arbitrary order, works in arbitrary space dimension and for arbitrary geometries. After deriving the scheme, we investigate the approximation error for smooth target functions and derive optimal approximation orders. Finally, we illustrate the method by giving numerical examples.

  • 出版日期2011-1