Direct and Large-Eddy Simulation XI pp 427-432 | Cite as
Benchmark on the Aerodynamics of a 5:1 Rectangular Cylinder: Further Experimental and LES Results
Abstract
The flow around a rectangular cylinder, having chord-to-depth ratio equal to 5, has been the object of a benchmark (BARC) launched in 2008 (http://www.aniv-iawe.org/barc/). The BARC configuration is of practical interest, e.g. in civil engineering, and, in spite of the simple geometry, the related flow dynamics and topology is complex. Indeed, the high-Reynolds-number flow around such a stationary rectangular cylinder is turbulent with flow separation from the upstream corners and unsteady reattachment on the cylinder side. Furthermore, a vortex shedding also occurs from the rear corners and interferes with the leading-edge vortices, according to the mechanism of impinging shear-layer instability (Nakamura et al, J Fluid Mech, 222:437–447, 1991, [1]).
References
- 1.Nakamura, Y., Ohya, Y., Tsuruta, H.: Experiments on vortex shedding from flat plates with square leading and trailing edges. J. Fluid Mech. 222, 437–447 (1991)CrossRefGoogle Scholar
- 2.Bruno, L., Salvetti, M.V., Ricciardelli, F.: Benchmark on the aerodynamics of a rectangular 5:1 cylinder: an overview after the first four years of activity. J. Wind Eng. Ind. Aerodyn. 126, 87–106 (2014)CrossRefGoogle Scholar
- 3.Bruno, L., Coste, N., Fransos, D.: Simulated flow around a rectangular 5:1 cylinder: spanwise discretisation effects and emerging flow features. J. Wind Eng. Ind. Aerodyn. 104–106, 203–215 (2012)CrossRefGoogle Scholar
- 4.Mariotti, A., Siconolfi, L., Salvetti, M.V.: Stochastic sensitivity analysis of large-eddy simulation predictions of the flow around a 5:1 rectangular cylinder. Eur. J. Mech. B-Fluid 62, 149–165 (2017)MathSciNetCrossRefGoogle Scholar
- 5.Mannini, C., Marra, A.M., Pigolotti, L., Bartoli, G.: 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. Aerodyn. 161, 42–58 (2017)CrossRefGoogle Scholar
- 6.Mannini, C., Soda, S., Schewe, G.: Numerical investigation on the three-dimensional unsteady flow past a 5:1 rectangular cylinder. J. Wind Eng. Ind. Aerodyn. 99, 469–482 (2011)CrossRefGoogle Scholar