Assessing the credibility of a series of computational fluid dynamic simulations of open channel flow

Détails

ID Serval
serval:BIB_339389C4CCE4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Assessing the credibility of a series of computational fluid dynamic simulations of open channel flow
Périodique
Hydrological Processes
Auteur(s)
Hardy R.J., Lane S.N., Ferguson R.I., Parsons D.R.
ISSN
0885-6087
Statut éditorial
Publié
Date de publication
2003
Volume
17
Numéro
8
Pages
1539-1560
Langue
anglais
Notes
Publication type : Article
Résumé
Recent developments in numerical algorithms have enabled the
construction of three-dimensional models for the prediction of flows in
open channels. These advances encompass improvements in both numerical
solutions and the process representation required for an accurate
system definition. However, to date, there is still little agreement on
how to assess systematically and report the credibility of these
simulations. This paper addresses this problem by adopting a Grid
Convergence Index approach. The results indicate, for two simple
hypothetical cases, a zero-degree confluence and a meander bend, that
the numerical code can be verified to an acceptable numerical standard.
However, it is shown that this does not mean that verification is
complete, as the literature implies, as whilst the discretization
resolution may be sufficient to verify one of the model variables it
does not imply that every variable has converged. Furthermore, the
scheme may still be insufficient to capture all the processes of
interest that are operating within the chosen environment.
Mots-clé
CFD, Global Convergence Index, verification, SECONDARY CIRCULATION, MODEL, CONFLUENCES
Web of science
Création de la notice
03/02/2011 15:40
Dernière modification de la notice
20/08/2019 14:19
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