601 2次の不安定と渦放出軌跡のロックイン(直交流による振動と制御)(OS.17 : 流体関連振動のダイナミクスと制御)

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概要

• 論文の詳細を見る

• Vortex-structure interaction models are studied in the work presented here. The third order model by Hartlen and Currie (HC model) can reproduce the correct response amplitude while a fifth order model by Landl predicts the observed hysterisis effect. Using concepts from nonlinear dynamics and bifurcation theory, the range of possible dynamics of the models is investigated in parameter space ; essentially, a class of nonlinear oscillators deriving naturally from the HC model is studied. It is found that perturbations of the HC model in parameter space lead to qualitatively physically meaningful dynamics. Forced excitation of the HC model is the highlight of the work. In this case, it is shown that a subharmonic lock-in predicted by the model may be related to a three dimensional secondary subharmonic instability of a periodic flows. Experimental results are presented for comparison.

• 一般社団法人日本機械学会の論文
• 2001-08-03

著者

• Kanki H.

  Department Of Mechanical Engineering Kobe Univ.

• GODA S.

  Department of Biochemistry, Orthodontics, Osaka Dental University

• Goda S.

  Department Of Mechanical Engineering Kobe Univ.

• MUREITHI N.

  Department of Mechanical Engineering, Kobe Univ.

• NAKAMURA T.

  Mitsubishi Heavy Industries Ltd.

• Mureithi N.

  Department Of Mechanical Engineering Kobe Univ.

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• SECONDARY INSTABILITIES IN VORTEX-STRUCTURE INTERACTION
• 601 2次の不安定と渦放出軌跡のロックイン(直交流による振動と制御)(OS.17 : 流体関連振動のダイナミクスと制御)

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