The effect of mesh geometry on the LES results: application to the unsteady flow around square 2D cylinder (特集 乱流シミュレーションと流れの設計(TSFD))

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概要

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•    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]

• 東京大学の論文

著者

• 大岡 龍三

  Institute of Industrial Science, University of Tokyo

• Ooka Ryozo

  Institute Of Industrial Science The University Of Tokyo

• Hefny Mohamed

  Graduate School of Engineering, The University of Tokyo

• Hefny Mohamed

  Graduate School Of Engineering The University Of Tokyo

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