Numerical Simulation of Wind Loads on Buildings with Different Heights Induced by Downburst

DOI

Bibliographic Information

Other Title
  • ダウンバーストによる高さの異なる建物の風荷重に関する数値解析

Abstract

<p>The wind characteristics of downbursts are quite different from those of turbulent boundary layers. Non-stationarity (e.g. severe moving downdraft and strong divergent outflow near the ground) causes severe damage to buildings and structures. Our previous study using a downburst simulator reproduces a notable non-stationarity: i.e. wind speed increase that occurs when the wind hits the ground. In the experiments, however, the measurement area of flow field and the number of pressure taps on the building model were so limited that detailed information on the flow and pressure fields could not be obtained. Therefore, in the present study, we have conducted a computational fluid dynamics (CFD) simulation of downbursts using a large eddy simulation (LES) in order to investigate the mechanism that causes strong winds. Focus is on the effects of the aforementioned non-stationarity of downbursts on the wind loads on buildings. The effects of height of building are also discussed.</p>

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Details 詳細情報について

  • CRID
    1390282763126432128
  • NII Article ID
    130007669558
  • DOI
    10.14887/kazekosymp.25.0_253
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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