We studied various characteristics of the flow-induced vibration (FIV) of a spring-mounted cylinder, and the fluctuating lift and drag forces exerted on the cylinder due to the periodic changes in the fluid motion and vortex structure. We compared two conditions, which represent the limiting cases for the solid-to-fluid density ratio: the cylinder density is negligible relative to the fluid density, and the fluid density is negligible relative to the cylinder density. For both conditions, we examined the changes in these characteristics over a wide range of nondimensional mass-damping for one degree of freedom (1-DOF, cross-flow) and 2-DOF (cross-flow and in-line) vibration. The four cases exhibit differences (especially at low mass-damping) but also have some similarities in the characteristics of the FIV, induced forces, and energy extraction from the flow. We examined these differences and similarities, the implied errors when the in-line DOF is neglected, and the feasibility of using a single mass-damping parameter to describe the FIV.
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August 2010
Research Papers
Characteristics of the Flow-Induced Vibration and Forces With 1- and 2-DOF Vibrations and Limiting Solid-to-Fluid Density Ratios
Osama A. Marzouk
Osama A. Marzouk
Department of Engineering Science and Mechanics,
e-mail: omarzouk@vt.edu
Virginia Polytechnic Institute and State University
, Blacksburg, VA 24061
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Osama A. Marzouk
Department of Engineering Science and Mechanics,
Virginia Polytechnic Institute and State University
, Blacksburg, VA 24061e-mail: omarzouk@vt.edu
J. Vib. Acoust. Aug 2010, 132(4): 041013 (9 pages)
Published Online: July 15, 2010
Article history
Received:
May 10, 2009
Revised:
January 13, 2010
Online:
July 15, 2010
Published:
July 15, 2010
Citation
Marzouk, O. A. (July 15, 2010). "Characteristics of the Flow-Induced Vibration and Forces With 1- and 2-DOF Vibrations and Limiting Solid-to-Fluid Density Ratios." ASME. J. Vib. Acoust. August 2010; 132(4): 041013. https://doi.org/10.1115/1.4001503
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