Design and Implementation of a Multiscale Mixed Method Based on a Nonoverlapping Domain Decomposition Procedure . Francisco, A., Ginting, V., Pereira, F., & Rigelo, J. Mathematics and Computers in Simulation , 99:125-138, 2014.
Design and Implementation of a Multiscale Mixed Method Based on a Nonoverlapping Domain Decomposition Procedure  [link]Paper  doi  abstract   bibtex   
We use a nonoverlapping iterative domain decomposition procedure based on the Robin interface condition to develop a new multiscale mixed method to compute the velocity field in heterogeneous porous media. Hybridized mixed finite elements are used for the spatial discretization of the equations. We define local, multiscale mixed basis functions to represent the discrete solutions in subdomains. Appropriate subspaces of the vector space spanned by these basis functions can be considered in the numerical approximations of heterogeneous porous media flow problems. The balance between numerical accuracy and numerical efficiency is determined by the choice of these subspaces. A detailed description of the numerical method is presented. Following that, numerical experiments are discussed to illustrate the important features of the new procedure and its comparison to the traditional fine grid simulations.
@article{Francisco2014125,
title = "Design and {I}mplementation of a {M}ultiscale {M}ixed {M}ethod {B}ased on a {N}onoverlapping {D}omain {D}ecomposition {P}rocedure ",
journal = "Mathematics and Computers in Simulation ",
volume = "99",
number = "",
pages = "125-138",
year = "2014",
issn = "0378-4754",
doi = "http://dx.doi.org/10.1016/j.matcom.2013.04.022",
url = "http://www.sciencedirect.com/science/article/pii/S0378475413001997",
author = "A. Francisco and V. Ginting and F. Pereira and J. Rigelo",
keywords = "Multiscale methods",
keywords = "Mixed finite elements",
keywords = "Domain decomposition ",
abstract = "We use a nonoverlapping iterative domain decomposition procedure based on the Robin interface condition to develop a new multiscale mixed method to compute the velocity field in heterogeneous porous media. Hybridized mixed finite elements are used for the spatial discretization of the equations. We define local, multiscale mixed basis functions to represent the discrete solutions in subdomains. Appropriate subspaces of the vector space spanned by these basis functions can be considered in the numerical approximations of heterogeneous porous media flow problems. The balance between numerical accuracy and numerical efficiency is determined by the choice of these subspaces. A detailed description of the numerical method is presented. Following that, numerical experiments are discussed to illustrate the important features of the new procedure and its comparison to the traditional fine grid simulations. "
}

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