The mortar element method for three dimensional finite elements

Abstract

We present in this paper the application of the mortar element method in the case where finite element methods are used in each subdomains. The novelty is in the possibility of dealing with tetrahedra for the finite element mesh. This paper thus completes the analysis of the mortar element methods that allows for coupling different spectral and/or finite element methods in adjascent subdomains in a flexible and optimal way.