An Oseen Two-Level Stabilized Mixed Finite-Element Method for the 2D/3D Stationary Navier-Stokes Equations

Aiwen Wang, Xin Zhao, Peihua Qin and Dongxiu Xie

Abstract and Applied Analysis, 2012, vol. 2012, 1-12

Abstract:

We investigate an Oseen two-level stabilized finite-element method based on the local pressure projection for the 2D/3D steady Navier-Stokes equations by the lowest order conforming finite-element pairs (i.e., and ). Firstly, in contrast to other stabilized methods, they are parameter free, no calculation of higher-order derivatives and edge-based data structures, implemented at the element level with minimal cost. In addition, the Oseen two-level stabilized method involves solving one small nonlinear Navier-Stokes problem on the coarse mesh with mesh size H , a large general Stokes equation on the fine mesh with mesh size . The Oseen two-level stabilized finite-element method provides an approximate solution ( ) with the convergence rate of the same order as the usual stabilized finite-element solutions, which involves solving a large Navier-Stokes problem on a fine mesh with mesh size h . Therefore, the method presented in this paper can save a large amount of computational time. Finally, numerical tests confirm the theoretical results. Conclusion can be drawn that the Oseen two-level stabilized finite-element method is simple and efficient for solving the 2D/3D steady Navier-Stokes equations.

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlaaa:520818

DOI: 10.1155/2012/520818

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