APPLICABILITY OF FINITE ELEMENT ANALYSIS TO FLOW AROUND TWO SQUARE CYLINDERS IN TANDEM ARRANGEMENT

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  • 並列配置された正方形角柱まわりの有限要素流れ解析とその適用性に関する研究
  • ヘイレツ ハイチサレタ セイホウケイ カクチュウ マワリ ノ ユウゲン ヨウソ

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Abstract

Finite element analyses for flow around two square cylinders in tandem arrangement were performed with two and three dimensional numerical models. The computational flow characteristics were compared with wind tunnel results in terms of drag coefficient, pressure coefficient, and flow pattern, then the applicability of the numerical simulation to the structures in tandem was studied. It has been reported that flow patterns around two rectangular columns in tandem can be classified into two modes. One of the modes, where the Kármán vortex is not formed between the cylinders, should prevail with the column spacing used in this paper, and it could be adequately represented only by the three dimensional simulation at Re=104. As a result, the computed aerodynamic characteristics in this case agreed well with the experimental results, and the effectiveness of three dimensional computation and Reynolds number were confirmed.

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