Three Dimensional CFD Analysis of Rectangular Cylinder with Aspect Ratio of 0.4

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Other Title
  • 辺長比0.4 の矩形断面の3 次元数値流体解析

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A rectangular cylinder with an aspect ratio of B/D smaller than 0.6 requires three-dimensional unsteady computational fluid dynamics (CFD) simulation since a three-dimensional flow is generated in the span-wise direction in the wake of this cross section. And it is known from previous studies that CFD simulation of two-dimensional section causes a large difference in the results of existing wind tunnel experiments. In this study, large eddy simulation (LES) is conducted in case of the aspect ratio B/D equals 0.4 and we verified two points, the span-wise length and the mesh size in the span-wise direction. These were examined by comparing the aerodynamic coefficients obtained in this study with the results of existing wind tunnel experiments. As a result, it was found that the mesh size in span-wise direction should be smaller than D/10 and the span-wise length should be longer than 4D when performing a three-dimensional CFD analysis on a rectangular cylinder with an aspect ratio of B/D smaller than 0.6.

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Details 詳細情報について

  • CRID
    1390851087358311936
  • NII Article ID
    130008043681
  • DOI
    10.14887/natsympwindengproc.26.0_57
  • ISSN
    24355437
    24354392
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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