Abstract
A study on the relation between the wake inlet conditions and the wake characteristics of a bluff body by means of Particle Image Velocimetry is presented. The wake inlet condition, being a laminar boundary layer at the trailing edge of the body, are varied by means of wall-suction. Measurements are carried out at \(Re_{h} = 6.7\times 10^{3}\) based on the body thickness h. The induced radius of curvature of the streamlines is shown to be a promising parameter in explaining the increase in base drag and decrease in vortex shedding frequency associated with a thinner boundary layer.
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References
M.M. Zdravkovich, Flow around circular cylinders, in Fundamentals, vol. 1 (1997)
V. Durgesh, J.W. Naughton, S.A. Whitmore, Experimental investigation of base-drag reduction via boundary-layer modification. AIAA J. 1–10 (2013)
H. Choi, W.-P. Jeon, J. Kim, Control of flow over a bluff body. Annu. Rev. Fluid Mech. 40, 113–139 (2008)
A. Rowe, A.L.A. Fry, F. Motallebi, Influence of boundary-layer thickness on base pressure and vortex shedding frequency. AIAA J. 39(4), 754–756 (2001)
A. Mariotti, G. Buresti, Experimental investigation on the influence of boundary layer thickness on the base pressure and near-wake flow features of an axisymmetric blunt-based body. Exp. Fluids 54(11), 1–16 (2013)
R. Trip, J.H.M. Fransson, Boundary layer modification by means of wall suction and the effect on the wake behind a rectangular forebody. Phys. Fluids 26(12), 125105 (2014)
G. Buresti, Elements of Fluid Dynamics, vol. 3 (Imperial College Press, 2012)
Z.J. Taylor, E. Palombi, R. Gurka, G.A. Kopp, Features of the turbulent flow around symmetric elongated bluff bodies. J. Fluids Struct. 27(2), 250–265 (2011)
S. Goldstein, Modern Developments in Fluid Dynamics, vol. 1 (1938)
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© 2016 Springer International Publishing Switzerland
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Trip, R., Fransson, J.H.M. (2016). An Experimental Study on the Relation Between the Wake Inlet Conditions and the Near Wake Topology. In: Segalini, A. (eds) Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015). Springer Proceedings in Physics, vol 185. Springer, Cham. https://doi.org/10.1007/978-3-319-30602-5_17
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DOI: https://doi.org/10.1007/978-3-319-30602-5_17
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