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2010 Fiscal Year Final Research Report

Study on the characteristic and the countermeasures against self-excited vibrations which are generated in the support part of high stack

Research Project

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Project/Area Number 20560211
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionSaitama University

Principal Investigator

SATO Yuichi  Saitama University, 大学院・理工学研究科, 教授 (30134828)

Co-Investigator(Kenkyū-buntansha) NAGAMINE Takuo  埼玉大学, 大学院・理工学研究科, 准教授 (00323379)
MORI Hiroki  埼玉大学, 大学院・理工学研究科, 助教 (50451737)
Project Period (FY) 2008 – 2010
Keywords流体関連振動 / 自励振動 / 不安定振動
Research Abstract

To clarify the mechanism of observed violent vibration of a brace adjacent to a high circular stack, experimental study was performed. A test apparatus consists of a vertical flexible rod placed close to a large solid cylinder. Accordingly, airflow makes the rod whirl at its first natural angular frequency. Whirling motion grows as airflow velocity increases. Whirling direction depends on a relative location to the cylinder and not on airflow velocity. Further, analytical study was done by assuming the flow past the cylinder is frictionless, irrotational and incompressible. Analytical results show fairly good agreement with experimental ones as well as the actual brace vibration.

  • Research Products

    (5 results)

All 2011 2010 2009 2008

All Journal Article (2 results) Presentation (3 results)

  • [Journal Article] Flow Induced Vibration of an Elastic Adjacent to a Cylinder2011

    • Author(s)
      Keiji Yoshimura, Hiroki Mori, Takuo Nagamine, Masahiro Nogami, Yuichi Sato
    • Journal Title

      Journal of System Design and Dynamics Vol.5, No.1

      Pages: 192-203

  • [Journal Article] 円柱まわりに置かれた弾性棒の流れによる自励振動2009

    • Author(s)
      吉村敬二、森博輝、長嶺拓夫、野上正博、佐藤勇一
    • Journal Title

      日本機械学会論文集C編 75巻、755号

      Pages: 1926-1933

  • [Presentation] 旋回流れ内に置かれた弾性棒の挙動2011

    • Author(s)
      市村龍美,森博輝,長嶺拓夫,佐藤勇一
    • Organizer
      日本機械学会関東支部,第17期総会講演会(No.110-1 pp.221-222)
    • Year and Date
      2011-03-19
  • [Presentation] 旋回流に置かれた弾性棒に生じる不安定振れ回り運動2010

    • Author(s)
      森博輝,長嶺拓夫,佐藤勇一,市村龍美
    • Organizer
      日本機械学会,第9回評価・振動に関するシンポジウム(No.10-69 pp.10-12)
    • Year and Date
      2010-12-16
  • [Presentation] 円柱近傍に置かれた弾性棒に発生する振れ回り現象に関する研究2008

    • Author(s)
      野上正博,佐藤勇一,長嶺拓夫,森博輝
    • Organizer
      日本機械学会関東支部第14期総会講演会講演論文集(No.080-1 pp.95-96)
    • Year and Date
      2008-03-10

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Published: 2012-01-26   Modified: 2016-04-21  

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