Browse > Article
http://dx.doi.org/10.12989/was.2021.34.1.091

Numerical studies of unsteady flow field and aerodynamic forces on an oscillating 5:1 rectangular cylinder in a sinusoidal streamwise flow  

Ma, Ruwei (Research Center for Wind Engineering, Southwest Jiaotong University)
Zhou, Qiang (Research Center for Wind Engineering, Southwest Jiaotong University)
Wang, Peiyuan (Research Center for Wind Engineering, Southwest Jiaotong University)
Yang, Yang (Research Center for Wind Engineering, Southwest Jiaotong University)
Li, Mingshui (Research Center for Wind Engineering, Southwest Jiaotong University)
Publication Information
Wind and Structures / v.34, no.1, 2022 , pp. 91-100 More about this Journal
Abstract
Numerical simulations are conducted to investigate the uniform flow (UF) and sinusoidal streamwise flow (SSF) over an oscillating 5:1 rectangular cylinder with harmonic heaving motion at initial angles of attack of α = 0° and 3° using two-dimensional, unsteady Reynolds-averaged Navier-Stokes (URANS) equations. First, the aerodynamic parameters of a stationary 5:1 rectangular cylinder in UF are compared with the previous experimental and numerical data to validate the capability of the computationally efficient two-dimensional URANS simulations. Then, the unsteady flow field and aerodynamic forces of the oscillating 5:1 rectangular cylinder in SSF are analysed and compared with those in UF to explore the effect of SSF on the rectangular cylinder. Results show that the alternative vortex shedding is disturbed by SSF both at α = 0° and 3°, resulting in a considerable decrease in the vortex-induced force, whereas the unsteady lift component induced by cylinder motion remains almost unchanged in the SSF comparing with that in UF. Notably, the strong buffeting forces are observed at α = 3° and the energy associated with unsteady lift is primarily because of the oscillations of SSF. In addition, the components of unsteady lift induced by the coupling effects of SSF and cylinder motion are discussed in detail.
Keywords
sinusoidal streamwise flow; 5:1 rectangular cylinder; unsteady lift; flow field;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Ong, M.C. (2012), "Unsteady rans simulation of flow around a 5: 1 rectangular cylinder at high reynolds numbers", In International Conference on Offshore Mechanics and Arctic Engineering, American Society of Mechanical Engineers.
2 Ricci, M., Patruno, L., De Miranda, S. and Ubertini, F. (2017), "Flow field around a 5: 1 rectangular cylinder using LES: Influence of inflow turbulence conditions, spanwise domain size and their interaction", Comput. Fluids, 149, 181-193.   DOI
3 Shimada, K. and Ishihara, T. (2002), "Application of a modified k-ε model to the prediction of aerodynamic characteristics of rectangular cross-section cylinders", J. Fluids Struct., 16(4), 465-485. https://doi.org/10.1006/jfls.2001.0433.   DOI
4 Bartoli, G. (2008), BARC Overview Document, http://www.aniviawe.org/barc.
5 Li, M., Li, Q. and Shi, H. (2021), "Aerodynamic pressures on a 5:1 rectangular cylinder in sinusoidal streamwise oscillatory flows with non-zero mean velocities", J. Wind Eng. Ind. Aerod., 208, 104440. https://doi.org/10.1016/j.jweia.2020.104440.   DOI
6 Lin, S., Wang, Q., Nikitas, N. and Liao, H. (2019), "Effects of oscillation amplitude on motion-induced forces for 5:1 rectangular cylinders", J. Wind Eng. Ind. Aerod., 186, 68-83. https://doi.org/10.1016/j.jweia.2019.01.002.   DOI
7 Nakamura, Y. and Ozono, S. (1987), "The effects of turbulence on a separated and reattaching flow", J. Fluid Mech., 178, 477-490. https://doi.org/10.1017/S0022112087001320.   DOI
8 Ma, R., Zhou, Q., Wang, P., Yang, Y., Li, M. and Cao, S. (2021), "Effects of sinusoidal streamwise gust on the vortex-induced force on an oscillating 5:1 rectangular cylinder", J. Wind Eng. Ind. Aerod., 213, 104642. https://doi.org/10.1016/j.jweia.2021.104642.   DOI
9 Shirato, H., Yuichi, S. and Sasaki, O. (2011), "Surface pressure correlation and buffeting force evaluation", In Proceedings of the Thirteenth International Conference on Wind Engineering, Amsterdam, The Netherlands.
10 Wei, Z. and Kareem, A. (2011), "A benchmark study of flow around a rectangular cylinder with aspect ratio 1:5 at Reynolds number 1. E5", In Proceedings of the 13th International Conference on Wind Engineering, Amsterdam, July.
11 Williamson, C.H. (1996), "Vortex dynamics in the cylinder wake", Ann. Rev. Fluid Mech., 28(1), 477-539. https://doi.org/10.1146/annurev.fl.28.010196.002401.   DOI
12 Wu, B., Li, S., Zhang, L. and Li, K. (2021), "Experimental determination of the two-dimensional aerodynamic admittances of a 5:1 rectangular cylinder in streamwise sinusoidal flows", J. Wind Eng. Ind. Aerod., 210, 104525. https://doi.org/10.1016/j.jweia.2021.104525.   DOI
13 Zhou, Q., Cao, S. and Zhou, Z. (2013), "Numerical studies on non-shear and shear flows past a 5:1 rectangular cylinder", Wind Struct., 17(4), 379-397. http://dx.doi.org/10.12989/was.2013.17.4.379.   DOI
14 Patruno, L., Ricci, M., De Miranda, S. and Ubertini, F. (2016), "Numerical simulation of a 5: 1 rectangular cylinder at non-null angles of attack", J. Wind Eng. Ind. Aerod., 151, 146-157. https://doi.org/10.1016/j.jweia.2016.01.008.   DOI
15 Bartoli, G., Borsani, A., Mannini, C., Marra, A. M., Procino, L. and Ricciardelli, F. (2011), "Wind tunnel study on the aerodynamics of a 5: 1 rectangular cylinder in smooth flow", In Proceedings of the Thirteenth International Conference on Wind Engineering, Amsterdam, The Netherlands.
16 Bearman, P.W. and Trueman, D.M. (1972), "An investigation of the flow around rectangular cylinders", Aeronaut. Quart., 23(3), 229-237. https://doi.org/10.1017/S0001925900006119.   DOI
17 Bruno, L., Fransos, D., Coste, N. and Bosco, A. (2010), "3D flow around a rectangular cylinder: a computational study", J. Wind Eng. Ind. Aerod., 98(6-7), 263-276. https://doi.org/10.1016/j.jweia.2009.10.005.   DOI
18 Cao, S. and Li, M. (2015), "Numerical study of flow over a circular cylinder in oscillatory flows with zero-mean and nonzero- mean velocities", J. Wind Eng. Ind. Aerod., 144, 42-52. https://doi.org/10.1016/j.jweia.2015.04.007.   DOI
19 Cao, S., Zhou, Q. and Zhou, Z. (2014), "Velocity shear flow over rectangular cylinders with different side ratios", Comput. Fluids, 96, 35-46. https://doi.org/10.1016/j.compfluid.2014.03.002.   DOI
20 Li, Q.S. and Melbourne, W.H. (1995), "An experimental investigation of the effects of free-stream turbulence on streamwise surface pressures in separated and reattaching flows", J. Wind Eng. Ind. Aerod., 54, 313-323. https://doi.org/10.1016/0167-6105(94)00050-N.   DOI
21 Li, Q.S. and Melbourne, W.H. (1999), "The effect of large-scale turbulence on pressure fluctuations in separated and reattaching flows", J. Wind Eng. Ind. Aerod., 83(1-3), 159-169.   DOI
22 Ma, R., Yang, Y., Li, M. and Li, Q. (2021), "The unsteady lift of an oscillating airfoil encountering a sinusoidal streamwise gust", J. Fluid Mec., 908. https://doi.org/10.1017/jfm.2020.873.   DOI
23 Bruno, L., Salvetti, M.V. and Ricciardelli, F. (2014), "Benchmark on the aerodynamics of a rectangular 5: 1 cylinder: an overview after the first four years of activity", J. Wind Eng. Ind. Aerod., 126, 87-106. https://doi.org/10.1016/j.jweia.2014.01.005.   DOI
24 Okajima, A. (2006), "Strouhal numbers of rectangular cylinders", Journal of Fluid Mechanics. 123. 379-398. https://doi.org/10.1017/S0022112082003115.   DOI
25 Perot, J.B. (1993), "An analysis of the fractional step method", J. Comput. Phys., 108(1), 51-58. https://doi.org/10.1006/jcph.1993.1162.   DOI
26 Schewe, G. (2013), "Reynolds-number-effects in flow around a rectangular cylinder with aspect ratio 1:5", J. Fluids Struct., 39, 15-26. https://doi.org/10.1016/j.jfluidstructs.2013.02.013.   DOI
27 Sohankar, A. (2008), "Large eddy simulation of flow past rectangular-section cylinders: Side ratio effects", J. Wind Eng. Ind. Aerod., 96(5), 640-655. https://doi.org/10.1016/j.jweia.2008.02.009.   DOI
28 Wu, B., Li, S., Cao, S., Yang, Q. and Zhang, L. (2020), "Numerical investigation of the separated and reattaching flow over a 5:1 rectangular cylinder in streamwise sinusoidal flow", J. Wind Eng. Ind. Aerod., 198, 104120. https://doi.org/10.1016/j.jweia.2020.104120.   DOI
29 Ribeiro, A.F. (2011), "Unsteady RANS modelling of flow past a rectangular 5:1 cylinder: investigation of edge sharpness effects", Proceedings of the 13th International Conference on Wind Engineering, Amsterdam, The Netherlands.
30 Mannini, C., Marra, A.M., Pigolotti, L. and Bartoli, G. (2017), "The effects of free-stream turbulence and angle of attack on the aerodynamics of a cylinder with rectangular 5: 1 cross section", J. Wind Eng. Ind. Aerod., 161, 42-58. https://doi.org/10.1016/j.jweia.2016.12.001.   DOI
31 Mannini, C., Soda, A. and Schewe, G. (2011), "Numerical investigation on the three-dimensional unsteady flow past a 5: 1 rectangular cylinder", J. Wind Eng. Ind. Aerod., 99(4), 469-482. https://doi.org/10.1016/j.jweia.2010.12.016.   DOI
32 Mannini, C., Soda, A. and Schewe, G. (2010), "Unsteady RANS modelling of flow past a rectangular cylinder: Investigation of Reynolds number effects", Comput. Fluids, 39(9), 1609-1624. https://doi.org/10.1016/j.compfluid.2010.05.014.   DOI
33 Matsumoto, M., Shirato, H., Araki, K., Haramura, T. and Hashimoto, T. (2003), "Spanwise coherence characteristics of surface pressure field on 2-D bluff bodies", J. Wind Eng. Ind. Aerod., 91(1-2), 155-163. https://doi.org/10.1016/S0167-6105(02)00342-2.   DOI
34 Nakamura, Y. and Ohya, Y. (1984), "The effects of turbulence on the mean flow past two-dimensional rectangular cylinders", J. Fluid Mech., 149, 255-273. https://doi.org/10.1017/S0022112084002640.   DOI