A finite element method on composite grids based on Nitsche's method
ESAIM: Modélisation mathématique et analyse numérique, Tome 37 (2003) no. 3, pp. 495-514.

In this paper we propose a finite element method for the approximation of second order elliptic problems on composite grids. The method is based on continuous piecewise polynomial approximation on each grid and weak enforcement of the proper continuity at an artificial interface defined by edges (or faces) of one the grids. We prove optimal order a priori and energy type a posteriori error estimates in 2 and 3 space dimensions, and present some numerical examples.

DOI : 10.1051/m2an:2003039
Classification : 65N12, 65N30
Mots-clés : Nitsche's method, overlapping grids 
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     title = {A finite element method on composite grids based on {Nitsche's} method},
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Hansbo, Anita; Hansbo, Peter; Larson, Mats G. A finite element method on composite grids based on Nitsche's method. ESAIM: Modélisation mathématique et analyse numérique, Tome 37 (2003) no. 3, pp. 495-514. doi : 10.1051/m2an:2003039. http://archive.numdam.org/articles/10.1051/m2an:2003039/

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