Hydrodynamic Coefficients for In-Line Vortex Induced Vibrations
Hydrodynamic Coefficients for In-Line Vortex Induced Vibrations
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DOI：
10.1115/omae2007-29531
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
K. Aronsen;C. M. Larsen
中科院分区：
文献类型：
--
作者：
K. Aronsen;C. M. Larsen
The paper presents results from an experimental investigation of hydrodynamic forces on a cylinder under forced in-line motions. Measured forces are decomposed into added mass, driving force and average drag components. From a large set of experiments it has been possible to draw a complete map for in-line force coefficients as function of arbitrary combinations of motion amplitude and frequency. The paper presents test set-up, data processing and how the coefficients can be used in an empirical force coefficient model for calculation of in-line vibrations of slender marine structures with arbitrary damping. Such analyses are in particular important for free spanning pipelines, where damping from pipe/seafloor interaction will reduce the response amplitudes and hence also stresses and fatigue damage.Copyright © 2007 by ASME
