Measurements of Unsteady Wind Pressure Affected by Length of Pressure Guide Tube in Gusty Wind Tunnel Test

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  • Tamura Naoya
    Department of Urban Design, Planning and Disaster Management, Graduate School of Human-Environment Studies, Kyushu University : Master's program
  • Otsubo Kazuhiro
    Department of Urban Design, Planning and Disaster Management, Graduate School of Human-Environment Studies, Kyushu University : Master's program
  • Tsuru Norio
    Graduate School of Human-Environment Studies, Kyushu University
  • Tomokiyo Eriko
    Department of Architecture and Urban Design, Faculty of Human-Environment Studies, Kyushu University
  • Takeuchi Takashi
    Graduate School of Engineering　Department of Architecture, Kobe University
  • Maeda Junji
    Department of Architecture and Urban Design, Faculty of Human-Environment Studies, Kyushu University

Bibliographic Information

Other Title
  • 突風風洞実験における計測風圧力値に及ぼす導圧チューブ長さの影響
  • トップウ フウドウ ジッケン ニ オケル ケイソク フウアツリョクチ ニ オヨボス ドウアツ チューブ ナガサ ノ エイキョウ

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Abstract

It is known that a length of guide tube of pressure measurement equipment affects strongly measurements of unsteady wind pressure. This paper reports some effects of the tube length on measurements of gusty wind pressure on a gabled roof model under short-rise time gusts by wind tunnel test. It was found that average wind pressure under a steady wind flow is not influenced by the tube length. However, the deviation of wind pressure decreases with a guide tube length, so that the frequency component of wind pressure exceeding 10 Hz reduces remarkably in case of more than 3m tube length. The coefficients of peak wind pressure under a short-rise time gust also decrease with guide tubes length. The rate of reduction of the peak coefficient wind pressure varies at measurement points.

Journal

  • 都市・建築学研究

    都市・建築学研究 25 61-66, 2014-01-15

    Faculty of Human-Environment Studies, Kyushu University

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