|Table of Contents|

Citation:
　Ilker Goktepeli.Consideration of Aspect Ratios on Flow Around Wall-mounted Square Cylinders[J].Journal of Marine Science and Application,2025,(3):492-502.[doi:10.1007/s11804-025-00663-y]
Click and Copy

Consideration of Aspect Ratios on Flow Around Wall-mounted Square Cylinders

Info

Title:
Consideration of Aspect Ratios on Flow Around Wall-mounted Square Cylinders
Author(s):
Ilker Goktepeli
Affilations:
Author(s):
Ilker Goktepeli
Department of Mechanical Engineering, Konya Technical University, Konya, 42250, Türkiye
Keywords:
Aspect ratio; Drag coefficient; Reynolds number; Turbulence model; Wall-mounted square cylinder
分类号:
-
DOI:
10.1007/s11804-025-00663-y
Abstract:
Flow characteristics around a wall-mounted square cylinder have been numerically simulated at aspect ratios (AR) ranging from 4 to 7 at Re = 10 000. Four turbulence models have been compared in terms of drag coefficient (CD). The closest result has been provided by two turbulence models, namely, k-ε Realizable and k-ε Shear Stress Transport (SST). Hence, these models were utilized to present the flow patterns of pressure distributions, turbulent kinetic energy values, velocity magnitude values with streamlines, streamwise velocity components, cross-stream velocity components and spanwise velocity components on different planes. Flow stagnation has been attained in front of the cylinder. Pressure values peaked for the upstream region. Over the cylinders, the tip vortex structure was dominant owing to the influence of the free end. Flow separation from the top front edge of the body has been obtained. The dividing streamline affected by the flow separation was highly effective in the wake region and moved nearer to the body when the aspect ratio was decreased; the reason was the wake shrinkage owing to the decreasing aspect ratio. Upwash and downwash have been seen in the cylinder wake. These two models presented similar flow patterns and drag coefficients. These drag coefficients are in good agreement with those in previous studies.

References:

[1] Aboueian J, Sohankar A, Rastan MR, Ghodrat M (2021) An experimental study on flow over two finite wall-mounted square cylinders in a staggered arrangement. Ocean Engineering 240: 109954. https://doi.org/10.1016/j.oceaneng.2021.109954
[2] Afgan I, Moulinec C, Prosser R, Laurence D (2007) Large eddy simulation of turbulent flow for wall mounted cantilever cylinders of aspect ratio 6 and 10. International Journal of Heat and Fluid Flow 28(4): 561-574. https://doi.org/10.1016/j.ijheatfluidflow.2007.04.014
[3] Aksoy MH, Goktepeli I, Ispir M, Cakan A (2023) Machine learning approach for flow fields over a circular cylinder based on particle image velocimetry measurements. Measurement 223: 113699. https://doi.org/10.1016/j.measurement.2023.113699
[4] Aksoy MH, Yagmur S, Dogan S, Goktepeli I, Ispir M (2024) Experimental study on cylinder wake control using forced rotation. Journal of Wind Engineering and Industrial Aerodynamics 246: 105662. https://doi.org/10.1016/j.jweia.2024.105662
[5] Behera S, Saha AK (2021) Effect of inlet shear on turbulent flow past a wall-mounted finite-size square cylinder. Ocean Engineering 234: 109270. https://doi.org/10.1016/j.oceaneng.2021.109270
[6] Bocu Z, Altac Z (2011) Laminar natural convection heat transfer and air flow in three-dimensional rectangular enclosures with pin arrays attached to hot wall. Applied Thermal Engineering 31(16): 3189-3195. https://doi.org/10.1016/j.applthermaleng.2011.05.045
[7] Da Silva BL, Chakravarty R, Sumner D, Bergstrom DJ (2020) Aerodynamic forces and three-dimensional flow structures in the mean wake of a surface-mounted finite-height square prism. International Journal of Heat and Fluid Flow 83: 108569. https://doi.org/10.1016/j.ijheatfluidflow.2020.108569
[8] Dey S, Swargiary D, Sarkar S, Fang H, Gaudio R (2018) Turbulence features in a wall-wake flow downstream of a wall-mounted vertical cylinder. European Journal of Mechanics-B/Fluids 69: 46-61. https://doi.org/10.1016/j.euromechflu.2018.01.003
[9] El Hassan M, Bourgeois J, Martinuzzi R (2015) Boundary layer effect on the vortex shedding of wall-mounted rectangular cylinder. Experiments in Fluids 56: 1-19. https://doi.org/10.1007/s00348-014-1882-6
[10] Essel EE, Tachie MF, Balachandar R (2021) Time-resolved wake dynamics of finite wall-mounted circular cylinders submerged in a turbulent boundary layer. Journal of Fluid Mechanics 917: A8. https://doi.org/10.1017/jfm.2021.265
[11] Goktepeli I, Atmaca U (2023) Examination of air flow characteristics over an open rectangular cavity between the plates. International Journal of Aeroacoustics 22(3-4): 351-370. https://doi.org/10.1177/1475472X231185082
[12] Goktepeli I, Atmaca U, Cakan A (2020) Investigation of heat transfer augmentation between the ribbed plates via Taguchi approach and Computational Fluid Dynamics. Journal of Thermal Science 29(3): 647-666. https://doi.org/10.1007/s11630-019-1155-z
[13] Goktepeli I, Atmaca U, Yagmur S (2021) Visualization of flow characteristics between the ribbed plates via Particle Image Velocimetry. Thermal Science 25(1A): 171-179. https://doi.org/10.2298/TSCI180727300G
[14] Hammad A, Younis MY, Akram N, Uddin E, Javed A (2022) Simulation study on flow behavior around a wall-mounted finite height square cylinder with corner chamfer. Journal of Wind Engineering and Industrial Aerodynamics 229: 105157. https://doi.org/10.1016/j.jweia.2022.105157
[15] Hosseini Z, Bourgeois JA, Martinuzzi RJ (2013) Large-scale structures in dipole and quadrupole wakes of a wall-mounted finite rectangular cylinder. Experiments in Fluids 54: 1-16. https://doi.org/10.1007/s00348-013-1595-2
[16] Kirkil G, Constantinescu G (2015) Effects of cylinder Reynolds number on the turbulent horseshoe vortex system and near wake of a surface-mounted circular cylinder. Physics of Fluids 27(7): 075102. https://doi.org/10.1063/1.4923063
[17] Krajnovi? S (2011) Flow around a tall finite cylinder explored by large eddy simulation. Journal of Fluid Mechanics 676: 294-317. https://doi.org/10.1017/S0022112011000450
[18] Kumar P, Tiwari S (2019) Effect of incoming shear on unsteady wake in flow past surface mounted polygonal prism. Physics of Fluids 31(11): 113607. https://doi.org/10.1063/1.5123672
[19] Martínez-Sánchez ?, López E, Le Clainche S, Lozano-Durán A, Srivastava A, Vinuesa R (2023) Causality analysis of large-scale structures in the flow around a wall-mounted square cylinder. Journal of Fluid Mechanics 967: A1. https://doi.org/10.1017/jfm.2023.423
[20] Matsui A, Kawase C, Sugioka Y, Asai K, Nonomura T (2024) Measurement of pressure fluctuation distribution on a flat wall behind supported square cylinder with pressure-sensitive paint. Experimental Thermal and Fluid Science 157: 111226. https://doi.org/10.1016/j.expthermflusci.2024.111226
[21] McClean JF, Sumner D (2014) An experimental investigation of aspect ratio and incidence angle effects for the flow around surface-mounted finite-height square prisms. Journal of Fluids Engineering 136(8): 081206. https://doi.org/10.1115/1.4027138
[22] Mercier P, Ikhennicheu M, Guillou S, Germain G, Poizot E, Grondeau M, Thiébot J, Druault P (2020) The merging of Kelvin-Helmholtz vortices into large coherent flow structures in a high Reynolds number flow past a wall-mounted square cylinder. Ocean Engineering 204: 107274. https://doi.org/10.1016/j.oceaneng.2020.107274
[23] Ozturk NA, Akkoca A, Sahin B (2008) Flow details of a circular cylinder mounted on a flat plate. Journal of Hydraulic Research 46(3): 344-355. https://doi.org/10.3826/jhr.2008.3126
[24] Qiu W, Lee DY, Lie H, Rousset JM, Mikami T, Sphaier S, Tao L, Wang X, Magarovskii V (2017) Numerical benchmark studies on drag and lift coefficients of a marine riser at high Reynolds numbers. Applied Ocean Research 69: 245-251. https://doi.org/10.1016/j.apor.2017.10.010
[25] Rastan MR, Shahbazi H, Sohankar A, Alam MM, Zhou Y (2021) The wake of a wall-mounted rectangular cylinder: Cross-sectional aspect ratio effect. Journal of Wind Engineering and Industrial Aerodynamics 213: 104615. https://doi.org/10.1016/j.jweia.2021.104615
[26] Rinoshika H, Rinoshika A, Wang JJ, Zheng Y (2021) 3D flow structures behind a wall-mounted short cylinder. Ocean Engineering 221: 108535. https://doi.org/10.1016/j.oceaneng.2020.108535
[27] Roh SC, Park S (2003) Vortical flow over the free end surface of a finite circular cylinder mounted on a flat plate. Experiments in Fluids 34(1): 63-67. https://doi.org/10.1007/s00348-002-0532-6
[28] Schanderl W, Manhart M (2016) Reliability of wall shear stress estimations of the flow around a wall-mounted cylinder. Computers and Fluids 128: 16-29. https://doi.org/10.1016/j.compfluid.2016.01.002
[29] Sumner D (2013) Flow above the free end of a surface-mounted finite-height circular cylinder: A review. Journal of Fluids and Structures 43: 41-63. https://doi.org/10.1016/j.jfluidstructs.2013.08.007
[30] Sumner D, Heseltine JL, Dansereau OJP (2004) Wake structure of a finite circular cylinder of small aspect ratio. Experiments in Fluids 37: 720-730. https://doi.org/10.1007/s00348-004-0862-7
[31] Sumner D, Rostamy N, Bergstrom DJ, Bugg JD (2017) Influence of aspect ratio on the mean flow field of a surface-mounted finite-height square prism. International Journal of Heat and Fluid Flow 65: 1-20. https://doi.org/10.1016/j.ijheatfluidflow.2017.02.004
[32] Uffinger T, Ali I, Becker S (2013) Experimental and numerical investigations of the flow around three different wall-mounted cylinder geometries of finite length. Journal of Wind Engineering and Industrial Aerodynamics 119: 13-27. https://doi.org/10.1016/j.jweia.2013.05.006
[33] Vinuesa R, Schlatter P, Malm J, Mavriplis C, Henningson DS (2015) Direct numerical simulation of the flow around a wall-mounted square cylinder under various inflow conditions. Journal of Turbulence 16(6): 555-587. https://doi.org/10.1080/14685248.2014.989232
[34] Yagmur S, Dogan S, Aksoy MH, Goktepeli I (2020) Turbulence modeling approaches on unsteady flow structures around a semicircular cylinder. Ocean Engineering 200: 107051. https://doi.org/10.1016/j.oceaneng.2020.107051
[35] Yousif MZ, Yang Y, Zhou H, Mohammadikarachi A, Yu L, Zhang M (2024) Flow control over a finite wall-mounted square cylinder by using multiple plasma actuators. Journal of Fluids Engineering 146: 061301-1. https://doi.org/10.1115/1.4064387
[36] Yousif MZ, Lim HC (2022) Reduced-order modeling for turbulent wake of a finite wall-mounted square cylinder based on artificial neural network. Physics of Fluids 34(1): 015116. https://doi.org/10.1063/5.0077768
[37] Yuhi M, Ishida H, Umeda S (1999) A numerical study of sinusoidal oscillatory flows around a vertical wall-mounted circular cylinder. Coastal Engineering Journal 41(3-4): 225-246. https://doi.org/10.1142/S0578563499000140

Memo

Memo:
Received date:2024-4-30;Accepted date:2024-7-18。
Corresponding author:Ilker Goktepeli,E-mail:igoktepeli@ktun.edu.tr
Last Update: 2025-05-28