Computation of vortex-induced vibrations of long structures using a wake oscillator model: Comparison with DNS and experiments

By R. Violette, E. D. Langre, J. Szydlowski. 2007

250 citations recorded by the source corpus.

We consider here the dynamics of flexible slender systems undergoing vortex-induced vibration (VIV). This type of motion results from the coupling between the oscillating wake due to cross-flow and the structure motion. Practical applications are mainly found in the field of ocean engineering, where long flexible structures such as risers or mooring cables are excited by sea currents. The wake dynamics is here represented using a distributed wake oscillator coupled to the dynamics of the slender structure, a cable or a tensioned beam. This results in two coupled partial differential equations with one variable for the solid displacement and one for the wake fluctuating lift. This simplified model of the wake dynamics has been previously validated on simple experiments. Here, comparisons with direct numerical simulation results are done for both uniform and non-uniform flow. Comparison is also performed between the wake oscillator predictions and some experimental results on long cables. The results of those comparisons show that the proposed method can be used as simple computational tool in the prediction of some aspects of vortex induced vibrations of long flexible structures.

Subfields: Computational Mechanics, Control and Systems Engineering, Environmental Engineering

View Paper: https://www.semanticscholar.org/paper/8dcc5daaf1d94d7e749810fabad4f1a477f8784f

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computational Mechanics

1. Lin Wang
2. Huliang Dai
3. Abdessattar Abdelkefi
4. Hui Hu
5. Wenli Chen
6. Hui Li
7. Qiangqiang Zhang
8. Hassan Elahi

In Control and Systems Engineering

1. Huliang Dai
2. Hui Hu
3. Lin Wang
4. Abdessattar Abdelkefi
5. Wenli Chen
6. Hui Li
7. Qiangqiang Zhang

In Environmental Engineering

1. Hui Hu
2. Lin Wang
3. Abdessattar Abdelkefi
4. Wenli Chen
5. Hui Li
6. Qiangqiang Zhang
7. Huliang Dai

Citations in the corpus

• An experimental investigation on vortex induced vibration of a flexible inclined cable under a shear flow (2015, background): “Moreover, Mathelin and de Langre (2005) and Violette et al. (2007) investigated VIVs of long risers under ocean shear flows by using a wake oscillator model.”
• A review of recent studies on vortex-induced vibrations of long slender cylinders (2012, unknown): “Violette et al. (2007) also developed a 3-”
• Piezoelectric energy harvesting from concurrent vortex-induced vibrations and base excitations (2014, background): “The representation of the vortex-induced forces is very challenging [40] and several researchers have focused on this topic [41–48].”
• Theoretical modeling and nonlinear analysis of piezoelectric energy harvesting from vortex-induced vibrations (2014, result): “Facchinetti et al. (2004) found that the acceleration coupling representation is better to model the lock-in region, which was confirmed by Violette et al. (2007) through comparison with numerical simulation and experiments.”