The Effect of Mesh Geometry on the LES Results: Application to the Unsteady Flow around Square 2D Cylinder

The objective of this paper is to find out the influence of the cell geometry on the numerical errors. More precisely, the effect of two cell types is investigated, namely, the hexahedral cells and the tetrahedral cells. The truncation errors are compared between the two mesh styles and it is proved...

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Bibliographic Details
Published inSEISAN KENKYU Vol. 60; no. 1; pp. 34 - 39
Main Authors HEFNY, Mohamed M., OOKA, Ryozo
Format Journal Article
LanguageEnglish
Published Institute of Industrial Science The University of Tokyo 2008
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Summary:The objective of this paper is to find out the influence of the cell geometry on the numerical errors. More precisely, the effect of two cell types is investigated, namely, the hexahedral cells and the tetrahedral cells. The truncation errors are compared between the two mesh styles and it is proved that the tetrahedral-based mesh gives higher truncation error compared to the hexahedral-based mesh. Moreover, the effect of mesh non-orthogonality is investigated and it is found that it gives higher truncation errors. The flow problem of unsteady flow around square 2D cylinder is solved on both mesh systems for similar density using LES to give useful insight into the accuracy of the two mesh systems considered. [This abstract is not included in the PDF]
ISSN:0037-105X
1881-2058
DOI:10.11188/seisankenkyu.60.34