An accurate finite element method for elliptic interface problems

Details An accurate finite element method for elliptic interface problems An accurate finite element method for elliptic interface problems

2007-07-11

arxiv.org/abs/0707.1559v1

Mathematics

Numerical Analysis

Scientific paper

A finite element method for elliptic problems with discontinuous coefficients is presented. The discontinuity is assumed to take place along a closed smooth curve. The proposed method allows to deal with meshes that are not adapted to the discontinuity line. The (nonconforming) finite element space is enriched with local basis functions. We prove an optimal convergence rate in the $H^1$--norm. Numerical tests confirm the theoretical results.

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