Suppression of Vortex‐Induced Vibration and Phase‐Averaged Analysis of the Wake Generated by a Circular Cylinder Covered with Helical Grooves

Zhiyong Hao; Chenlin Sun; Yucen Lu; Kaiming Bi; Tongming Zhou

doi:10.3390/fluids7060194

Suppression of Vortex‐Induced Vibration and Phase‐Averaged Analysis of the Wake Generated by a Circular Cylinder Covered with Helical Grooves

Zhiyong Hao, Chenlin Sun, Yucen Lu, Kaiming Bi, Tongming Zhou

Research output: Journal article publication › Journal article › Academic research › peer-review

11 Citations (Scopus)

Abstract

The effect of triple helical grooves on the suppression of vortex‐induced vibration (VIV) of a circular cylinder was investigated experimentally in a wind tunnel over Reynolds number in the range of 1 × 10⁴ < Re < 4 × 10⁴. It was found that the helical grooves were effective in suppressing VIV with the peak amplitude reduction of approximately 36%. In addition, the lock‐on region was also reduced. To explore the mechanism for the suppression of VIV, experiments on flow structures for a stationary grooved cylinder were also conducted in a wind tunnel at a free stream velocity U∞ of 4.37 m/s, corresponding to a Reynolds number based on the bare cylinder diameter of about 3500. The data were then analyzed using the phase‐averaged method to evaluate the coherent vortex structures in the wakes. The results for the stationary grooved cylinder showed that the grooves weakened vortex shedding in the near wake. In addition, the grooves also reduced the drag coefficient by 6.6%. These results help explain the reduction of VIV using helical grooves.

Original language	English
Article number	194
Journal	Fluids
Volume	7
Issue number	6
DOIs	https://doi.org/10.3390/fluids7060194
Publication status	Published - Jun 2022
Externally published	Yes

Keywords

circular cylinder wake
helical grooves
passive control
vortex‐induced vibration

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

More information

10.3390/fluids7060194

Cite this

@article{868e05a78d474634a04cf3658b729f31,

title = "Suppression of Vortex‐Induced Vibration and Phase‐Averaged Analysis of the Wake Generated by a Circular Cylinder Covered with Helical Grooves",

abstract = "The effect of triple helical grooves on the suppression of vortex‐induced vibration (VIV) of a circular cylinder was investigated experimentally in a wind tunnel over Reynolds number in the range of 1 × 104 < Re < 4 × 104. It was found that the helical grooves were effective in suppressing VIV with the peak amplitude reduction of approximately 36%. In addition, the lock‐on region was also reduced. To explore the mechanism for the suppression of VIV, experiments on flow structures for a stationary grooved cylinder were also conducted in a wind tunnel at a free stream velocity U∞ of 4.37 m/s, corresponding to a Reynolds number based on the bare cylinder diameter of about 3500. The data were then analyzed using the phase‐averaged method to evaluate the coherent vortex structures in the wakes. The results for the stationary grooved cylinder showed that the grooves weakened vortex shedding in the near wake. In addition, the grooves also reduced the drag coefficient by 6.6%. These results help explain the reduction of VIV using helical grooves.",

keywords = "circular cylinder wake, helical grooves, passive control, vortex‐induced vibration",

author = "Zhiyong Hao and Chenlin Sun and Yucen Lu and Kaiming Bi and Tongming Zhou",

note = "Funding Information: Funding: This research was funded by Australian Research Council through ARC Discovery Pro‐ jects grant number DP190103279. Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2022",

month = jun,

doi = "10.3390/fluids7060194",

language = "English",

volume = "7",

journal = "Fluids",

issn = "2311-5521",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "6",

}

TY - JOUR

T1 - Suppression of Vortex‐Induced Vibration and Phase‐Averaged Analysis of the Wake Generated by a Circular Cylinder Covered with Helical Grooves

AU - Hao, Zhiyong

AU - Sun, Chenlin

AU - Lu, Yucen

AU - Bi, Kaiming

AU - Zhou, Tongming

N1 - Funding Information: Funding: This research was funded by Australian Research Council through ARC Discovery Pro‐ jects grant number DP190103279. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2022/6

Y1 - 2022/6

N2 - The effect of triple helical grooves on the suppression of vortex‐induced vibration (VIV) of a circular cylinder was investigated experimentally in a wind tunnel over Reynolds number in the range of 1 × 104 < Re < 4 × 104. It was found that the helical grooves were effective in suppressing VIV with the peak amplitude reduction of approximately 36%. In addition, the lock‐on region was also reduced. To explore the mechanism for the suppression of VIV, experiments on flow structures for a stationary grooved cylinder were also conducted in a wind tunnel at a free stream velocity U∞ of 4.37 m/s, corresponding to a Reynolds number based on the bare cylinder diameter of about 3500. The data were then analyzed using the phase‐averaged method to evaluate the coherent vortex structures in the wakes. The results for the stationary grooved cylinder showed that the grooves weakened vortex shedding in the near wake. In addition, the grooves also reduced the drag coefficient by 6.6%. These results help explain the reduction of VIV using helical grooves.

AB - The effect of triple helical grooves on the suppression of vortex‐induced vibration (VIV) of a circular cylinder was investigated experimentally in a wind tunnel over Reynolds number in the range of 1 × 104 < Re < 4 × 104. It was found that the helical grooves were effective in suppressing VIV with the peak amplitude reduction of approximately 36%. In addition, the lock‐on region was also reduced. To explore the mechanism for the suppression of VIV, experiments on flow structures for a stationary grooved cylinder were also conducted in a wind tunnel at a free stream velocity U∞ of 4.37 m/s, corresponding to a Reynolds number based on the bare cylinder diameter of about 3500. The data were then analyzed using the phase‐averaged method to evaluate the coherent vortex structures in the wakes. The results for the stationary grooved cylinder showed that the grooves weakened vortex shedding in the near wake. In addition, the grooves also reduced the drag coefficient by 6.6%. These results help explain the reduction of VIV using helical grooves.

KW - circular cylinder wake

KW - helical grooves

KW - passive control

KW - vortex‐induced vibration

UR - http://www.scopus.com/inward/record.url?scp=85132422104&partnerID=8YFLogxK

U2 - 10.3390/fluids7060194

DO - 10.3390/fluids7060194

M3 - Journal article

AN - SCOPUS:85132422104

SN - 2311-5521

VL - 7

JO - Fluids

JF - Fluids

IS - 6

M1 - 194

ER -

Suppression of Vortex‐Induced Vibration and Phase‐Averaged Analysis of the Wake Generated by a Circular Cylinder Covered with Helical Grooves

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this