Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 191, Issue 47-48, Pages 5515-5536Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0045-7825(02)00513-3
Keywords
Navier-Stokes equations; finite elements; stabilized method; oseen problem; iterative methods
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A Galerkin finite element method is considered to approximate the incompressible Navier-Stokes equations together with iterative methods to solve a resulting system of algebraic equations. This system couples velocity and pressure unknowns, thus requiring a special technique for handling. We consider the Navier-Stokes equations in velocity-kinematic pressure variables as well as in velocity-Bernoulli pressure variables. The latter leads to the rotation form of nonlinear terms. This form of the equations plays an important role in our studies. A consistent stabilization method is considered from a new view point. Theory and numerical results in the paper address both the accuracy of the discrete solutions and the effectiveness of solvers and a mutual interplay between these issues when particular stabilization techniques are applied. (C) 2002 Published by Elsevier Science B.V.
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