LES OF FLUCTUATING WIND PRESSURES ON A HIGH-RISE BUILDING INFLUENCED BY WINDWARD BUILDING

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  • YOSHIKAWA Masaru
    Senior Research Engineer, Technology Center, Taisei Corp., M. Eng.
  • TAMURA Tetsuro
    Prof., Dept. of Environmental Science and Technology, Tokyo Institute of Technology, Dr. Eng.

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Other Title
  • 風上建物の影響を受ける高層建築物の変動風圧に関するLES
  • 風上建物の影響を受ける高層建築物の変動風圧に関するLES : 建築物の耐風設計のための非構造格子系LESの構築(その2)
  • カザカミ タテモノ ノ エイキョウ オ ウケル コウソウ ケンチクブツ ノ ヘンドウ フウアツ ニ カンスル LES : ケンチクブツ ノ タイフウ セッケイ ノ タメ ノ ヒコウゾウ ゴウシケイ LES ノ コウチク(ソノ 2)
  • －建築物の耐風設計のための非構造格子系LESの構築（その２）－
  • -Formulation of LES using unstructured grid system for wind-resistant design of buildings (Part 2)-

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Abstract

 Large Eddy Simulation (LES) is expected to be adopted as an effective technique to evaluate wind load on buildings for wind-resistant design. For numerical prediction of wind pressures by LES, unstructured grid system is effective in terms of flexibility in generating computed models. In this paper, the fluctuating wind pressures on a high-rise building influenced by windward building are examined using unstructured LES. Especially, focusing on the critical phenomena regarding pressure intensification, the availability of LES is examined by comparison with experiments and the flow fields are studied to elucidate the mechanism of peak pressure occurrence.

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