Flow-Induced Vibration of a rotating circular cylinder using position and velocity feedback

Vicente-Ludlam, D.; Barrero-Gil, A.; Velázquez, A.

doi:10.1016/j.jfluidstructs.2017.05.001

Cited by 15 publications

(3 citation statements)

References 41 publications

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“…In order to validate the mathematical model presented earlier and check the results it provided, we carried out numerical simulations of the fluid-structure interaction problem at hand using a previously validated Lattice Boltzmann Method code (see [18] or Appendix A for details). The problem sketched in Figure 1 was solved numerically where a D-section galloping body was taken into account.…”

Section: Numerical Simulations and Validation Of The Mathematical Modelmentioning

confidence: 99%

Enhance of Energy Harvesting from Transverse Galloping by Actively Rotating the Galloping Body

et al. 2019

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Kinematic rotary control is here proposed conceptually to enhance energy harvesting from Transverse Galloping. The effect of actively orientating the galloping body with respect to the incident flow, by imposing externally a rotation of the body proportional to the motion-induced angle of attack, is studied. To this end, a theoretical model is developed and analyzed, and numerical computations employing the Lattice Boltzmann Method are carried out. Good agreement is found between theoretical model predictions and numerical simulations results. It is found that it is possible to increase significantly the efficiency of energy harvesting with respect to the case without active rotation, which opens the path to consider this idea in practical realizations.

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Section: Numerical Simulations and Validation Of The Mathematical Modelmentioning

confidence: 99%

Enhance of Energy Harvesting from Transverse Galloping by Actively Rotating the Galloping Body

et al. 2019

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“…2 rotation rate was negative, the VIV response was enhanced. 12 Zhu et al used CFD method to investigate the suppression effect of two rotating control rods on the VIV response of a circular cylinder, and the diameter ratio of the control rod to the cylinder was 0.06. 13 When two control rods rotate inward and in opposite directions, external flow could be introduced into the boundary layer of the circular cylinder, disrupting the formation of the boundary layer and effectively suppressing the VIV response.…”

Section: Introductionmentioning

confidence: 99%

Vortex Induced Vibration Response of the Cylinder Inspired by Terebridae with Different Helical Angle

Yu,

Mao,

Tian

et al. 2024

Preprint

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Biomimetic design has recently received widespread attention. Inspired by the Terebridae structure, this paper provides a structural form for suppressing vortex-induced vibration (VIV) response. Four different structural forms are shown, including the traditional smooth cylinder (P0), the Terebridae-inspired cylinder with a helical angle of 30° (P30), the Terebridae-inspired cylinder with a helical angle of 60° (P60), and the Terebridae-inspired cylinder with a helical angle of 90° (P90). And computational fluid dynamics (CFD) method is adopted to solve the flow pass the Terebridae-inspired structures, and the vibration equation is solved using the Newmark-β method. The results show that the VIV responses are effectively controlled in the lock-in region for P30, P60, and P90, and P60 shows the best VIV suppression performance. The transverse amplitude and the downstream amplitude can be reduced by 82.67% and 91.43% respectively for P60 compared with that for P0, and the peak of the mean-drag coefficient is suppressed by 53.33%. The Q-criterion vortices of P30, P60, and P90 are destroyed, with irregular vortices shedding. It is also found that the boundary layer separation is located on the Terebridae-inspired ribs. The twisted ribs cause the separation point to constantly change along the spanwise direction, resulting in the development of the boundary layer separation being completely destroyed. The strength of the wake flow is significantly weakened for the Terebridae-inspired cylinder. In the lock-in region, the motion trajectory presents a typical 8-shaped for P0, while the motion trajectory of the Terebridae-inspired cylinder tends to be a flat 1-shaped.

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“…And, although the study of incompressible flows around bluff bodies is one of the oldest problems in fluid mechanics, it is still today one of the most important and challeng-sidering several aspects, in order to investigate the mechanisms behind these phenomena. According to [9], flow induced vibration, FIV, of the elastic bodies are not rare. They occur in a wide variety of physical systems, such as airplane wings, leaves of trees, bridges of long span, tall buildings, clarinet reeds or offshore structures to name a few.…”

Section: Introductionmentioning

confidence: 99%

Flow Dynamics around Two Side by Side Circular Cylinders with Alternating Movements

Silva¹

2023

WJM

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The flow dynamics is analyzed through two-dimensional numerical simulations around two circular cylinders arranged side by side, with 4 combinations of alternating motions. All simulations are performed for Re = 1000, amplitude of oscillation (A) equal to 3, frequency ratio (f r ) of 0.5, specific rotation (α) equal to 0.5 and different values of spacing ratio (L/D). It is verified that the combination of the type of movement, together with the position of one cylinder in relation to the other, exerts significant influence on the flow dynamics, as well as on the pressure distribution around the cylinder surface and on the average values of the fluid dynamics coefficients. The smallest value of the average pressure coefficient (C p = −3.3), is obtained for the oscillating cylinder when placed side by side with the clockwise rotation cylinder, case 3 and L/D = 1.5. On the other hand, the lowest mean drag coefficient (C d = 1.0788), is obtained for the cylinder with counterclockwise rotation, located in the lower position in relation to oscillating cylinder in the upper position, with spacing between them of 1.5. Furthermore, it is observed that the rotation movement is more effective in reducing drag than the rotation-oscillation movement, for the studied frequency ratio.

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Flow-Induced Vibration of a rotating circular cylinder using position and velocity feedback

Cited by 15 publications

References 41 publications

Enhance of Energy Harvesting from Transverse Galloping by Actively Rotating the Galloping Body

Enhance of Energy Harvesting from Transverse Galloping by Actively Rotating the Galloping Body

Vortex Induced Vibration Response of the Cylinder Inspired by Terebridae with Different Helical Angle

Flow Dynamics around Two Side by Side Circular Cylinders with Alternating Movements

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