Time-accurate solution of stabilized convection-diffusion-reaction equations: II-accuracy analysis and examples

✍ Scribed by Huerta, Antonio ;Roig, Bernardino ;Donea, Jean

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 420 KB
• Volume: 18
• Category: Article
• ISSN: 1069-8299
• DOI: 10.1002/cnm.518

✦ Synopsis

Abstract

The paper addresses the development of time‐accurate methods for solving transient convection–diffusion –reaction problems using finite elements. The accuracy characteristics of the spatially stabilized implicit multi‐stage time‐stepping schemes developed in a companion paper (Part I of this work) are analysed and compared here. This is done by means of a Fourier analysis. An important improvement is observed when the order of the method is increased. Moreover, the stabilization techniques proposed (streamline‐upwind Petrov–Galerkin (SUPG), Galerkin least‐square (GLS), sub‐grid scale (SGS) and least squares) do not degrade the phase accuracy. Finally, some examples are presented to show the applicability of these schemes. Copyright © 2002 John Wiley & Sons, Ltd.