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- W2009593623 abstract "For many decades now, the idea of Vortex-Induced Vibrations (VIV) being modeled as a lock-in phenomenon of a mass-spring-dashpot system with an ideal added mass term has prevailed. In 2000, it was suggested by Vikestad et al. [1] that VIV may be modeled as a resonance phenomenon with variable natural frequency due to a variable added-mass term. In this paper, the variable added-mass approach is used for analysis of VIV at various added damping values. Additionally, Vandiver's damping coefficient c* is used [2] to correlate damping to lift. The findings are that: 1. The oscillation frequency is in unity with the mean of the natural frequency with variable added mass for each period of oscillation during VIV lock-in no matter the damping value. 2. The time-averaged variable added mass coefficient is shown to vary with an increasing damping coefficient, where below a reduced velocity of approximately seven, increased damping indicates increased added mass. After a reduced velocity of approximately seven, however, increased damping results in decreased added mass. 3. Vandiver's damping coefficient c* plotted against the nondimensional amplitude follows very closely to c*A/D = max lift coefficient = square root of 0.79 [3]. A handful of cases did exceed square root of 0.79 but only marginally." @default.
- W2009593623 created "2016-06-24" @default.
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- W2009593623 date "2014-09-01" @default.
- W2009593623 modified "2023-09-23" @default.
- W2009593623 title "Effect of damping on variable added mass and lift of circular cylinders in vortex-induced vibrations" @default.
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- W2009593623 doi "https://doi.org/10.1109/oceans.2014.7003253" @default.
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