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A simple strategy for constructing bounded convection schemes for unstructured grids
Author(s) -
Woodfield Peter L.,
Suzuki Kenjiro,
Nakabe Kazuyoshi
Publication year - 2004
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.784
Subject(s) - unstructured grid , flux limiter , grid , inviscid flow , computer science , simple (philosophy) , mesh generation , finite volume method , mathematical optimization , computational science , mathematics , geometry , mechanics , finite element method , engineering , physics , philosophy , structural engineering , epistemology
Due to the great geometrical flexibility, popularity for unstructured grid methods in fluid dynamics has been increasing in recent years. In parallel with this interest there is a need for bounded second or higher order convection schemes which can be implemented easily in the unstructured setting. In the present work a simple strategy for achieving convective boundedness in the context of a vertex‐centered unstructured finite volume algorithm is demonstrated. Testing is carried out on an inviscid oblique step problem using both structured and unstructured grid arrangements. Further testing for numerical diffusion is done using a distorted grid in a two dimensional channel. The proposed scheme is straightforward to implement and is found to perform well for the cases considered. The overall algorithm converges well and the limiter appears to introduce little extra numerical diffusion beyond that inherently present in the base scheme. Copyright © 2004 John Wiley & Sons, Ltd.