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Titre du document / Document title

A numerical study of flow over a confined backward-facing step

Auteur(s) / Author(s)

BARTON I. E. ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

Manchester univ., Manchester school eng., aerospace eng. div., Manchester M13 9PL, ROYAUME-UNI

Résumé / Abstract

Numerical solutions using the SIMPLE algorithms for laminar flow over a backward-facing step are presented. Five differencing schemes were used : hybrid ; quadratic upwind (QUICK) ; second-order upwind (SOUD) ; central-differencing and a novel scheme named second-order upwind biased (SOUBD). The SOUBD scheme is shown to be part of a family of schemes which include the central-differencing, SOUD and QUICK schemes for uniform grids. The results of the backward-facing step problem are presented and are compared with other numerical solutions and experimental data to evaluate the accuracy of the differencing schemes. The accuracy of the differencing schemes was ascertained by using uniform grids of various grid densities. The QUICK, SOUBD and SOUD schemes gave very similar accurate results. The hybrid scheme suffered from excessive diffusion except for the finest grids and the central-differencing scheme only converged for the finest grids.

Revue / Journal Title

International journal for numerical methods in fluids    ISSN  0271-2091   CODEN IJNFDW 

Source / Source

1995, vol. 21, no8, pp. 653-665 (24 ref.)

Langue / Language

Anglais

Editeur / Publisher

Wiley, Chichester, ROYAUME-UNI  (1981) (Revue)

Mots-clés anglais / English Keywords

Pipe flow

;

Step

;

Laminar flow

;

Algorithms

;

Discretization method

;

Upwind scheme

;

Flow separation

;

Numerical convergence

;

Mots-clés français / French Keywords

Ecoulement conduite

;

Gradin

;

Ecoulement laminaire

;

Algorithme

;

Méthode discrétisation

;

Schéma décentré

;

Décollement écoulement

;

Convergence numérique

;

Mots-clés espagnols / Spanish Keywords

Peldaño

;

Método discretización

;

Esquema decentrado

;

Despegadura flujo

;

Convergencia numérica

;

Localisation / Location

INIST-CNRS, Cote INIST : 19291, 35400005017356.0030

Nº notice refdoc (ud4) : 3679780



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