Forces Acting on a Vortex-Excited Vibrating Cylinder in Planar Oscillatory Flow


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by Kenjirou Hayashi, Natl Defense Acad, Yokosuka, Japan,
Yousou Ogihara, Natl Defense Acad, Yokosuka, Japan,
Koji Fujima, Natl Defense Acad, Yokosuka, Japan,
Toshiyuki Sigemura, Natl Defense Acad, Yokosuka, Japan,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: An experimental investigation into the vortex-excited vibration of a circular cylinder in planar oscillatory flow has been made with emphasis being placed on the amplification of the forces acting on a cylinder caused by the fluid-structure interaction. The range of Keulegan Carpenter number covered is from 4 to 19. It is found that the amplifications of the in-line force and transverse force acting on a vortex-excited vibrating cylinder being resonant with the second harmonic component of the transverse force are large in the range of Keulegan-Carpenter number about 6 to 8.

Subject Headings: Oscillatory flow | Cylinders | Fluid flow | Vibration | Vortex shedding | Flow measurement | Water flow | Fluid-structure interaction |

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