Reduced integration post‐processing techniques for Darcy's velocity recovery in bilinear quadrilaterals

Abstract

AbstractIn this work we propose the use of a reduced integration technique for bilinear quadrilateral elements in the determination of the Darcy's velocity via global and local post‐processing techniques. This approach increases accuracy in distorted meshes and leads to a reduction in the computational effort for matrix coefficients and residuals evaluations. Numerical examples are shown to validate our approach, accessing its efficiency and accuracy. Copyright © 2007 John Wiley & Sons, Ltd.