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A Finite Volume Method Based on the Constrained Nonconforming Rotated Q 1-Constant Element for the Stokes Problem

Published online by Cambridge University Press:  03 June 2015

Jing Qi*
Affiliation:
Jilin University, Changchun 130012, China
Wanfu Tian*
Affiliation:
School of Science, Shenyang Aerospace University, Shenyang 110136, China
Yonghai Li*
Affiliation:
School of Mathematics, Jilin University, Changchun 130012, China
*
Corresponding author. Email: tianwf@163.com
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Abstract

We construct a finite volume element method based on the constrained nonconforming rotated Q 1-constant element (CNRQ1-P0) for the Stokes problem. Two meshes are needed, which are the primal mesh and the dual mesh. We approximate the velocity by CNRQ1 elements and the pressure by piecewise constants. The errors for the velocity in the H 1 norm and for the pressure in the L 2 norm are O(h) and the error for the velocity in the L 2 norm is O(h2). Numerical experiments are presented to support our theoretical results.

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Type
Research Article
Copyright
Copyright © Global-Science Press 2012

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