A Nonlinear Dynamics Analysis of Vortex-Structure Interaction Models

[+] Author and Article Information
N. W. Mureithi, S. Goda, H. Kanki

Department of Mechanical Engineering, Kobe University, Kobe 657-8501, Japan

T. Nakamura

Mitsubishi Heavy Industries, Takasago R&D Center, Takasago 676-8686, Japan

J. Pressure Vessel Technol 123(4), 475-479 (Jul 16, 2001) (5 pages) doi:10.1115/1.1403023 History: Received March 18, 2001; Revised July 16, 2001
Copyright © 2001 by ASME
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Resonance response based on the HC model
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Resonance response via the Landl model
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Mode lock in for p/q=2/1
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Resonance behavior of the Mathieu equation
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(a) Overview of test tank with test cylinder in place; (b) close-up view of test cylinder
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Stages of secondary instability for ω/Ω=2 in the wake showing: (a) initial symmetrical vortices; (b) symmetry breaking and counter rotation of vortices; (c) merged vortex; (d) initial symmetry breaking for second half of the cycle
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Typical flow structure for ω/Ω=3—(a) shedding of symmetrical pair of vortices, (b) complex post-shedding flow structure




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