Abstract
Opposition control is a simple feedback control method traditionnally used to attenuate near-wall turbulence and reduce drag in wall-bounded turbulent flows. The idea is to impose blowing and suction at the wall to counteract near-wall quasi-streamwise vortical structures. Unfortunately, the efficiency of this method decreases as the Reynolds number increases. The present study proposes a simple but efficient modification of opposition control (OC) to increase its performance at large Reynolds numbers. We demonstrate a 300% improvement when performing a blowing-only opposition control (BOOC), where OC’s suction part has been removed, on a spatially developing turbulent boundary layer at Re τ=920. It is shown that BOOC only applies blowing at the location of high skin friction events, which suppresses the latter without altering the “natural” low skin friction events. As a result, BOOC dramatically changes the probability density profile of wall shear stress but does not weaken turbulence intensity near the wall.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Choi, H., Moin, P., Kim, J.: Active turbulence control for drag reduction in wall-bounded flows. J. Fluid Mech. 262 (1994) 75–110.
Hammond, E.P., Bewley, T.R., Moin, P.: Observed mechanisms for turbulence attenuation and enhancement in opposition-controlled wall-bounded flows. Phys. Fluids 10 (1998) 2421–2423.
Kravchenko, A.G., Choi, H., Moin, P.: On the relation of near-wall streamwise vortices to wall skin friction in turbulent boundary layers. Phys. Fluids A 5 (1993) 3307.
Fukagata, K., Iwamoto, K., Kasagi, N.: Contribution of Reynolds stress distribution to the skin friction in wall-bounded flows. Phys. Fluids 14 (2002) 73.
Park, J., Choi, H.: Effects of uniform blowing or suction form a spanwise slot on a turbulent boundary layer flow. Phys. Fluids 11 (1999) 3095–3105.
Antonia, R.A., Zhu, Y., Sokolov, M.: Effect of concentrated wall suction on a turbulent boundary layer. Phys. Fluids 7 (1995) 2465.
Vreman, A.W.: Direct and large eddy simulation of the compressible turbulent mixing layer. PhD Thesis. University of Twente, Twente (1995).
Sagaut, P.: Large-Eddy Simulation for Incompressible Flows, An Introduction. Springer (2002).
Mary, I., Sagaut, P.: LES of a flow around an airfoil near stall. AIAA J. 40 (2002) 1139–1145.
Lund, T.S., Wu, X., Squires, K.D.: Generation of turbulent inflow data for spatially-developing boundary layer simulations. J. Comput. Phys. 140 (1998) 233–258.
Chang, Y., Collis, S.S., Ramkrishnan, S.: Viscous effects in control of near-wall turbulence. Phys. Fluids 14 (2002) 4069–4080.
Kang, S., Choi, H.: Active wall motions for skin-friction drag reduction. Phys. Fluids 12 (2000) 3301–3304.
Hu, Z.W., Morfey, C.L., Sandham, N.D.: Wall Pressure and Shear Stress Spectra from Direct Simulations of Channel Flow. AIAA J. 44 (2006) 1541–1549.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer
About this paper
Cite this paper
Pamiès, M., Garnier, E., Sagaut, P., Merlen, A. (2008). An Improvement of Opposition Control at High Reynolds Numbers. In: Morrison, J.F., Birch, D.M., Lavoie, P. (eds) IUTAM Symposium on Flow Control and MEMS. IUTAM Bookseries, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6858-4_29
Download citation
DOI: https://doi.org/10.1007/978-1-4020-6858-4_29
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-6857-7
Online ISBN: 978-1-4020-6858-4
eBook Packages: EngineeringEngineering (R0)