Some observations on grid convergence

It is claimed that current practices in grid convergence studies, particularly in the field of external aerodynamics, are flawed. The necessary conditions to properly establish grid convergence are presented. A theoretical model and a numerical example are used to demonstrate these ideas. It is show...

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Published in:Computers & fluids 2006-08, Vol.35 (7), p.688-692
Main Author: Salas, Manuel D.
Format: Article
Language:English
Subjects:
Computational methods in fluid dynamics
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Physics
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description It is claimed that current practices in grid convergence studies, particularly in the field of external aerodynamics, are flawed. The necessary conditions to properly establish grid convergence are presented. A theoretical model and a numerical example are used to demonstrate these ideas. It is shown that anomalously low or high observed convergence rates can be exhibited by otherwise well-behaved algorithms because of improper use of grid refinement ratios in different directions.
doi_str_mv 10.1016/j.compfluid.2006.01.003
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subjects Computational methods in fluid dynamics
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Physics
title Some observations on grid convergence
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