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An Experimental Investigation of the Effects of Helical Strakes on the Characteristics of the Wake around the Circular Cylinder

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Abstract

This study experimentally investigated the effects of the helical strakes on the characteristics of the wake around the circular cylinder at Reynolds numbers of 10,000 and 40,000. In proportion to the diameter of the investigated model, the heights of the investigated strakes were 1.5 and 2.1 mm, which were equal to H/D = 0.05 and 0.07, respectively. On the above-mentioned model, there were 3 strakes with equal installation intervals, whose pitches were equal to 3D. The effect of changes in the height of the helical strakes and Reynolds number on the characteristics of the wake in the centerline of the cylinder wake were measured and explored. Moreover, using the measured values, the parameter of velocity defect, half of the wake width at half depth, and Strouhal numbers were calculated. The results revealed that increasing the height of the helical strakes at constant Reynolds number decreases the turbulence intensity in the wake. Furthermore, helical strakes reduces the value of the critical Reynolds number. To investigate the fluid forces applied to the model, the value of the drag coefficient was also calculated. The results indicated that using helical strakes generally reduces the drag coefficient of the cylinder.

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Abbreviations

VIV:

Vortex-induced vibrations

CFD:

Computational fluid dynamics

CSD:

Computational structural dynamics

PTFE:

Poly tetra fluoro ethylene

b1/2 (mm):

Half of the wake width at half depth

\({b}_{h}\)(mm):

Wake width

CD:

Drag coefficient

D (mm):

Cylinder diameter

f (Hz):

Vortex frequency

H (mm):

Height of the helical strakes

H/D :

Height of the dimensionless helical strakes

Re:

Reynolds number

Tu[%]:

Turbulence intensity

U (ms− 1):

Local velocity in the x direction

\({U}_{\text{min}}\)(ms−1) :

Minimum velocity in the wake

U ref, U ∞ (ms− 1):

Free-stream velocity

\(\sqrt{\overline{{u }^{{{\prime}}2}}}\)(ms−1):

Root mean square of fluctuation in the x direction

W 0 (ms− 1):

Velocity defect

X (mm):

Horizontal axis

X/D :

Dimensionless horizontal axis

Y (mm):

Vertical axis

Y/D :

Dimensionless vertical axis

Ref:

Value of the free flow at the inlet

References

  • Abdi R, Rezazadeh N, Abdi M (2017) Reduction of fluid forces and vortex shedding frequency of a circular cylinder using rigid splitter plates. Eur J Comput Mech 26(3):225–244

    Article  MathSciNet  Google Scholar 

  • Achenbach E (1971) Influence of surface roughness on the cross-flow around a circular cylinder. J Fluid Mech 46(2):321–335

    Article  Google Scholar 

  • Alam MM et al (2010) Classification of the tripped cylinder wake and bi-stable phenomenon. Int J Heat Fluid Flow 31(4):545–560

    Article  Google Scholar 

  • Allen DW et al (2003) Partial helical strake for vortex-induced-vibrationsuppression. Google Patents

  • Araújo TB et al (2012) Influence of obstacle aspect ratio on tripped cylinder wakes. Int J Heat Fluid Flow 35:109–118

    Article  Google Scholar 

  • Ardekani M (2009) Hot-wire calibration using vortex shedding. Measurement 42(5):722–729

    Article  Google Scholar 

  • Ardekani M, Motlagh MM (2010) Ordinary hot-wire/hot-film method for spirography application. Measurement 43(1):31–38

    Article  Google Scholar 

  • Assi G, Orselli R, Silva-Ortega M (2019) Control of vortex shedding from a circular cylinder surrounded by eight rotating wake-control cylinders at Re= 100. J Fluids Struct 89:13–24

    Article  Google Scholar 

  • Aydin T, Joshi A, Ekmekci A (2014) Critical effects of a spanwise surface wire on flow past a circular cylinder and the significance of the wire size and Reynolds number. J Fluids Struct 51:132–147

    Article  Google Scholar 

  • Azmi AM et al (2015) The effect of a screen shroud on vortex-induced vibration of a circular cylinder and its wake characteristics. In: The Twenty-fifth International Ocean and Polar Engineering Conference. OnePetro

  • Chen J et al (2018) Characteristics of the turbulent energy dissipation rate in a cylinder wake. J Fluid Mech 835:271–300

    Article  MathSciNet  MATH  Google Scholar 

  • Chen D-Y et al (2019) Suppression of vortex-induced vibrations of a flexible riser by adding helical strakes. J Hydrodyn 31(3):622–631

    Article  Google Scholar 

  • Choi H, Jeon W-P, Kim J (2008) Control of flow over a bluff body. Annu Rev Fluid Mech 40:113–139

    Article  MathSciNet  MATH  Google Scholar 

  • Constantinides Y, Oakley Jr OH (2006) Numerical prediction of bare and straked cylinder VIV. In: International conference on offshore mechanics and Arctic engineering

  • Dong S, Karniadakis GE (2005) DNS of flow past a stationary and oscillating cylinder at Re= 10000. J Fluids Struct 20(4):519–531

    Article  Google Scholar 

  • Dong S, Triantafyllou G, Karniadakis G (2008) Elimination of vortex streets in bluff-body flows. Phys Rev Lett 100(20):204501

    Article  Google Scholar 

  • Dunlop J (2003) Free flight aerodynamics of sports balls. Acousto-Scan

  • Durhasan T et al (2019) The effect of shroud on vortex shedding mechanism of cylinder. Appl Ocean Res 84:51–61

    Article  Google Scholar 

  • Ekmekci A, Rockwell D (2011) Control of flow past a circular cylinder via a spanwise surface wire: effect of the wire scale. Exp Fluids 51(3):753–769

    Article  Google Scholar 

  • Ezadi Yazdi MJ, Bak Khoshnevis A (2018) Wake-boundary layer interaction behind an elliptic cylinder at different Reynolds numbers. J Turbulence 19(7):529–552

    Article  Google Scholar 

  • Hover F, Tvedt H, Triantafyllou M (2001) Vortex-induced vibrations of a cylinder with tripping wires. J Fluid Mech 448:175–195

    Article  MATH  Google Scholar 

  • Hsu L-C, Ye J-Z (2015) Numerical study of flow patterns in a tandem array cylinder system. Int J Appl Mech 7(03):1550034

    Article  Google Scholar 

  • Huang S (2010) Cylinder drag reduction by the use of helical grooves. In: Proceedings of the HYDRALAB III Joint User Meeting

  • Karthikeyan S, Kannan B, Senthilkumar S (2019) Active vortex shedding control for flow over a circular cylinder using rearward jet injection at low Reynolds number. Innovative design, analysis and development practices in aerospace and automotive engineering (I-DAD 2018). Springer, pp 135–141

    Chapter  Google Scholar 

  • Kleissl K, Georgakis C (2012) Comparison of the aerodynamics of bridge cables with helical fillets and a pattern-indented surface. J Wind Eng Ind Aerodyn 104:166–175

    Article  Google Scholar 

  • Kozlov AV, Thomas FO (2011) Bluff-body flow control via two types of dielectric barrier discharge plasma actuation. AIAA J 49(9):1919–1931

    Article  Google Scholar 

  • Li L et al (2019) Experimental investigation on the noise reduction method of helical cables for a circular cylinder and tandem cylinders. Appl Acoust 152:79–87

    Article  Google Scholar 

  • Mattingly GE (1962) An experimental study of the three dimensionality of the flow around a circular cylinder. Maryland Univ College Park Inst For Fluid Dynamics and Applied Mathematics

  • Mishra A, Hanzla M, De A (2020) Passive control of the onset of vortex shedding in flow past a circular cylinder using slit. Phys Fluids 32(1):013602

    Article  Google Scholar 

  • Motameni B (2011) Two circular cylinders in turbulent cross flow

  • Mousavi SM, Kamali R (2020a) Experimental and numerical investigation of a new active control method to suppression of vortex shedding and reduction of sound pressure level of a circular cylinder. Aerosp Sci Technol 103:105907

    Article  Google Scholar 

  • Mousavi SM, Kamali R (2020b) Mathematical modeling of the vortex shedding structure and sound pressure level of a large wind turbine tower. Int J Appl Mech 12(06):2050070

    Article  Google Scholar 

  • Niedzwecki JM, Fang SM (2013) Suppression of flow-induced vibrations using ribbon fairings. Int J Comput Methods Exp Measur 1(4):395–405

    Google Scholar 

  • Ozono S (1999) Flow control of vortex shedding by a short splitter plate asymmetrically arranged downstream of a cylinder. Phys Fluids 11(10):2928–2934

    Article  MATH  Google Scholar 

  • Quen LK et al (2018) Performance of two-and three-start helical strakes in suppressing the vortex-induced vibration of a low mass ratio flexible cylinder. Ocean Eng 166:253–261

    Article  Google Scholar 

  • Rashidi S, Hayatdavoodi M, Esfahani JA (2016) Vortex shedding suppression and wake control: a review. Ocean Eng 126:57–80

    Article  Google Scholar 

  • Ruck B, Klausmann K, Wacker T (2012) The flow around circular cylinders partially coated with porous media. In: AIP Conference Proceedings vol 4. American Institute of Physics

  • Sangtani Lakhwani N, Nicolleau F, Brevis W (2019) Lattice Boltzmann method simulations of high Reynolds number flows past porous obstacles. Int J Appl Mech 11(03):1950028

    Article  Google Scholar 

  • Schlichting H, Kestin J (1961) Boundary layer theory, vol 121. Springer, New York

  • Scruton C (1957) A means for avoiding wind-excited oscillations of structures with circular or nearly circular cross section. Natl. Phys. Lab. (UK), Aero Rep.

  • Shtendel T, Seifert A (2014) Three-dimensional aspects of cylinder drag reduction by suction and oscillatory blowing. Int J Heat Fluid Flow 45:109–127

    Article  Google Scholar 

  • Wang W et al (2019) Numerical investigation on vortex-induced vibration suppression of a circular cylinder with axial-slats. J Marine Sci Eng 7(12):454

    Article  Google Scholar 

  • Xu W-H et al (2017) Influences of the helical strake cross-section shape on vortex-induced vibrations suppression for a long flexible cylinder. China Ocean Eng 31(4):438–446

    Article  Google Scholar 

  • Xu W et al (2018) Flow-induced vibration (FIV) suppression of two tandem long flexible cylinders attached with helical strakes. Ocean Eng 169:49–69

    Article  Google Scholar 

  • Yadegari M, Khoshnevis AB (2021) Numerical and experimental study of characteristics of the wake produced behind an elliptic cylinder with trip wires. Iran J Sci Technol Trans Mech Eng 45(1):265–285

    Article  Google Scholar 

  • Yazdi MJE, Khoshnevis AB (2018) Experimental study of the flow across an elliptic cylinder at subcritical Reynolds number. Eur Phys J plus 133(12):533

    Article  Google Scholar 

  • Yazdi MJE, Khoshnevis AB (2020) Comparing the wake behind circular and elliptical cylinders in a uniform current. SN Appl Sci 2(5):1–13

    Google Scholar 

  • Yazdi MJE, Rad AS, Khoshnevis AB (2019) Features of the flow over a rotating circular cylinder at different spin ratios and Reynolds numbers: experimental and numerical study. Eur Phys J plus 134(5):1–21

    Google Scholar 

  • Zhou T et al (2011) On the study of vortex-induced vibration of a cylinder with helical strakes. J Fluids Struct 27(7):903–917

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran

    Mitra Yadegari, Abdolamir Bak Khoshnevis & Mojtaba Boloki

Authors
  1. Mitra Yadegari
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  2. Abdolamir Bak Khoshnevis
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  3. Mojtaba Boloki
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Correspondence to Abdolamir Bak Khoshnevis.

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Yadegari, M., Bak Khoshnevis, A. & Boloki, M. An Experimental Investigation of the Effects of Helical Strakes on the Characteristics of the Wake around the Circular Cylinder. Iran J Sci Technol Trans Mech Eng 47, 67–80 (2023). https://doi.org/10.1007/s40997-022-00494-0

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  • DOI: https://doi.org/10.1007/s40997-022-00494-0

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