Spoiler plate effects on the suppression of vortex-induced motions of a single circular cylinder

Bianchi, Valerio; Silva, Leandro S. P.; Cenci, Fredi; Hirabayashi, Shinichiro; Suzuki, Hiroki; Gonçalves, Rodolfo T.

doi:10.1016/j.oceaneng.2020.107569

Cited by 14 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The suppression efficiency, on the one hand, is significantly high compared with other methods [4], while the additional load caused by the sea current is one of the main disadvantages for the strakes [5]. For the designers and the manufacturers, the model test is commonly used to optimise the helical strakes [6].…”

Section: Introductionmentioning

confidence: 99%

Scaled model testing for the helical strakes in reducing the vortex-induced vibrations

Sun

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The accuracy of the prediction of the suppression efficiency of the triplex helical strakes for vortex-induced vibrations (VIV) is important in the offshore industry for the risers. Towing tank tests of the 1:1 section model have been used in the study of one degree of freedom; however, this method requires a long time for both the preparation and the testing. In this study, a scaled model testing method based on the flume and the oscillating frame is proposed, which measured the oscillating amplitude and the forces for both the bare pipe and the triplex helical strakes. The scaled tests were carried out in the TU Delft, with the range of Reynolds number between 6000 and 20000. The results were compared with the real model test applied in the towing tank to evaluate the accuracy. The measured strake efficiency of the scale model test agrees with the full-scale model test, providing support for the scaled model test in reducing the vortex-induced vibrations.

show abstract

Section: Introductionmentioning

confidence: 99%

Scaled model testing for the helical strakes in reducing the vortex-induced vibrations

Sun

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…It was found that the average drag and lift of rough cylinders were greatly reduced compared with those of smooth cylinders, and it was considered that surface roughness reduced the intensity of vortex-induced vibration. Bianchi Valerio et al [26] used splitter plates to carry out parameterized experimental research on the suppression of the VIV of a low-aspect-ratio cylinder. The research shows that the splitter plate structure can significantly reduce the vibration amplitude in the flow direction and transverse direction of a cylinder.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Continuous Trapezoidal Straight Spoiler Plates on the Vortex-Induced Vibration of Wind Turbine Towers

Zhang

Chen³

et al. 2022

Atmosphere

View full text Add to dashboard Cite

This paper proposes a method of controlling the vortex-induced vibration (VIV) of wind turbine towers by adding continuous trapezoidal straight spoiler plates (TS) onto their outer surface: a fluid–solid coupling model was constructed to simulate the processes of Karman vortex generation and shedding on the different surfaces of an original tower (O–tower) and a tower with TS (TS–tower) with assumed and actual Re, while the VIV frequencies were also calculated and compared; the effects of the TS geometry parameters on the VIV frequency of towers were studied to investigate the recommended size; a modal analysis was carried out to research the effects of TS on the vortex-induced resonance risk of towers; and the simulation results as well as relevant research conclusions were validated by an analogical wind tunnel test.

show abstract

“…For example, sacrificial embankments [10,11], guide panels [7,12,13], collars [14,15], and pier slots [14] were used to reduce the intensity of the flowing water and weaken the strength of down-flows and horseshoe vortices; ripraps [16][17][18][19][20] and gabions [21] were used to enable scour reduction by providing a physical barrier [22]. All these measures have been shown effective in reducing the scour around bridge piles, however, not all of these measures are applicable to reduce the scour around the monopile foundation of OWTs.…”

Section: Introductionmentioning

confidence: 99%

A feasibility study of reducing scour around monopile foundation using a tidal current turbine

et al. 2021

View full text Add to dashboard Cite

Spoiler plate effects on the suppression of vortex-induced motions of a single circular cylinder

Cited by 14 publications

References 14 publications

Scaled model testing for the helical strakes in reducing the vortex-induced vibrations

Scaled model testing for the helical strakes in reducing the vortex-induced vibrations

The Effect of Continuous Trapezoidal Straight Spoiler Plates on the Vortex-Induced Vibration of Wind Turbine Towers

A feasibility study of reducing scour around monopile foundation using a tidal current turbine

Contact Info

Product

Resources

About