@Article{CiCP-15-4, author = {}, title = {The Stability and Convergence of Fully Discrete Galerkin-Galerkin FEMs for Porous Medium Flows}, journal = {Communications in Computational Physics}, year = {2014}, volume = {15}, number = {4}, pages = {1141--1158}, abstract = {

The paper is concerned with the unconditional stability and error estimates of fully discrete Galerkin-Galerkin FEMs for the equations of incompressible miscible flows in porous media. We prove that the optimal Lerror estimates hold without any time-step (convergence) conditions, while all previous works require certain time-step restrictions. Theoretical analysis is based on a splitting of the error into two parts: the error from the time discretization of the PDEs and the error from the finite element discretization of the corresponding time-discrete PDEs, which was proposed in our previous work [26, 27]. Numerical results for both two- and three-dimensional flow models are presented to confirm our theoretical analysis.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.080313.051213s}, url = {https://global-sci.com/article/80526/the-stability-and-convergence-of-fully-discrete-galerkin-galerkin-fems-for-porous-medium-flows} }