Behavior of vortex-induced vibration of a circular cylinder near a deformable wall with two degrees of freedom in steady flow |
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| Authors: | Bing Yang Jian-lin Ma Jin-sheng Cui Wan-hai Xu |
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| Institution: | c a School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China b Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China c School of Civil Engineering,Tianjin University,Tianjin 300072,China |
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| Abstract: | The behavior of vortex-induced vibration of a two-degree-of-freedom cylinder near a deformable wall in steady flow is investigated
experimentally. The typical phenomenon of the two-degree-of-freedom cylinder’s VIV is discussed. The influences of initial
gap between the cylinder and the wall on the dynamic responses of the cylinder are analyzed. The comparison is made about
dynamic responses of the cylinder with one and two degrees of freedom. Experimental results show that the vibration of the
cylinder near a deformable wall with a small value of initial gap-to-diameter ratios can generally be divided into two phases.
The initial gap-to-diameter ratios have a noticeable influence on the occurrence of transverse vibration. The transverse maximum
amplitude of the cylinder with two degrees of freedom is larger than that of the cylinder with one degree of freedom under
the condition with the same values of other parameters. However, the vibration frequency of the cylinder for the two degrees
of freedom case is smaller than that for the one degree of freedom case at the same value of Vr number. |
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| Keywords: | vortex-induced vibration two degrees of freedom deformable wall circular cylinder steady flow |
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