@Article{JCM-22-1, author = {Yinnian, He}, title = {A Two-Level Finite Element Galerkin Method for the Nonstationary Navier-Stokes Equations I: Spatial Discretization}, journal = {Journal of Computational Mathematics}, year = {2004}, volume = {22}, number = {1}, pages = {21--32}, abstract = {
In this article we consider a two-level finite element Galerkin method using mixed finite elements for the two-dimensional nonstationary incompressible Navier-Stokes equations. The method yields a $H^1$-optimal velocity approximation and a $L_2$-optimal pressure approximation. The two-level finite element Galerkin method involves solving one small, nonlinear Navier-Stokes problem on the coarse mesh with mesh size $H$, one linear Stokes problem on the fine mesh with mesh size $h << H$. The algorithm we study produces an approximate solution with the optimal, asymptotic in $h$, accuracy.
}, issn = {1991-7139}, doi = {https://doi.org/2004-JCM-8848}, url = {https://global-sci.com/article/85186/a-two-level-finite-element-galerkin-method-for-the-nonstationary-navier-stokes-equations-i-spatial-discretization} }