Aerodynamic Characteristics of Stay-Cables with Spiral Protuberances

DOI
  • Dao Thu Minh
    Kyoto University, Department of Civil and Earth Resources Engineering
  • Yagi Tomomi
    Kyoto University, Department of Civil and Earth Resources Engineering
  • Noguchi Kyohei
    Kyoto University, Department of Civil and Earth Resources Engineering
  • Fukushima Haruki
    Kyoto University, Department of Civil and Earth Resources Engineering
  • Do Tung Quang
    Kyoto University, Department of Civil and Earth Resources Engineering
  • Kuwabara Shougo
    Kyoto University, Department of Civil and Earth Resources Engineering

Bibliographic Information

Other Title
  • スパイラル突起付き斜張橋ケーブルの空力特性に関する研究

Abstract

<p>A cable attached with 12 spiral protuberances has been shown to experience drag crisis at Re = 1.3x10 4 -2.3x10 4, a much lower Reynolds number than that of a smooth cable. This study aimed at describing how the flow around the modified cable would develop during drag crisis under the influence of the spiral protuberances by studying the surface pressure on the cable in normal flow and skew It has been revealed that the suppression of alternating vortex shedding was closely associated with drag crisis. Beyond drag crisis region, flow patterns still experienced drastic changes in time and space. However, drag coefficient stayed constant. In 45-degere yawing condition, pressure fluctuation became even more suppressed so that the flow seemed to resume its 2 dimensionality.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390006895526333184
  • NII Article ID
    130008052696
  • DOI
    10.14887/jaweam.2021.0_125
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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