Abstract
In this work, a series of direct numerical simulations are conducted to study the effect of wall normal spanwise homogeneous wall actuation on a turbulent boundary layer. The moving boundary is represented by a boundary data immersion technique. A parametric study was performed, varying the actuator length, the wall normal actuation amplitude and the actuation frequency. It was found that localized actuation, relying only on wall motion instead of requiring a plenum in the case of synthetic jets, generated a net momentum flux jet affecting the flow not only in the immediate vicinity of the actuator but also for a significant distance downstream. The cases with an actuator velocity of \( u^{+}_{act}= 20.1 \) showed a particularly pronounced effect on the boundary layer and resulted in a recirculation region.
Similar content being viewed by others
References
Lardeau, S., Leschziner, M.: The streamwise drag-reduction response of a boundary layer subjected to a sudden imposition of transverse oscillatory wall motion. Phys. Fluids 25(7), 075,109 (2013)
Hurst, E., Yang, Q., Chung, Y.: The effect of Reynolds number on turbulent drag reduction by streamwise travelling waves. J. Fluid Mech. 759, 28–55 (2014)
Itoh, M., Tamano, S., Yokota, K., Taniguchi, S.: Drag reduction in a turbulent boundary layer on a flexible sheet undergoing a spanwise traveling wave motion. J. Turbul. 7(27), 1–17 (2006)
Tamano, S., Itoh, M.: Drag reduction in turbulent boundary layers by spanwise traveling waves with wall deformation. J. Turbul. 13(9) (2012)
Nagamine, H., Yamahata, K., Hagiwara, Y., Matsubara, R.: Turbulence modification by compliant skin and strata-corneas desquamation of a swimming dolphin. J. Turbul. 5(18) (2004)
Yanagimoto, K., Yamamoto, S., Kawazoe, H., Hamamoto, N.: Research on skin friction drag reduction by vibrant wall. J. Fluid Sci. Technol. 6(4), 625–636 (2011)
Jacobson, S., Reynolds, W.: Active control of streamwise vortices and streaks in boundary layers. J. Fluid Mech. 360, 179–211 (1998)
Endo, T., Kasagi, N., Suzuki, Y.: Feedback control of wall turbulence with wall deformation. Int. J. Heat Fluid Flow 21(5), 568–575 (2000)
Kang, S., Choi, H.: Active wall motions for skin-friction drag reduction. Phys. Fluids 12(12), 3301 (2000)
Bai, H., Zhou, Y., Zhang, W., Xu, S., Wang, Y., Antonia, R.A.: Active control of a turbulent boundary layer based on local surface perturbation. J. Fluid Mech. 750, 316–354 (2014)
Sandberg, R.: Compressible-flow DNS with application to airfoil noise. Flow Turbul. Combust. 95(2), 211–229 (2015)
Touber, E., Sandham, N.: Large-eddy simulation of low-frequency unsteadiness in a turbulent shock-induced separation bubble. Theor. Comput. Fluid Dyn. 23, 79–107 (2009)
Sandberg, R., Sandham, N.: Nonreflecting zonal characteristic boundary condition for direct numerical simulation of aerodynamic sound. AIAA J. 44(2), 402–405 (2006)
Schlanderer, S., Weymouth, G., Sandberg, R.: The boundary data immersion method for compressible flows with application to aeroacoustics. J. Comput. Phys. 333 (15), 440–461 (2017)
Serrano Galliano, S., Sandberg, R.: Effect of the leading and trailing edge geometry on the fluid-structural coupling of membrane aerofoils. In: 2016 AIAA Scitech. AIAA Paper 2016–0853 (2016)
Schlatter, P., Örlü, R.: Turbulent boundary layers at moderate Reynolds numbers: inflow length and tripping effects. J. Fluid Mech. 710, 5–34 (2012)
Schlatter, P., Örlü, R.: Assessment of direct numerical simulation data of turbulent boundary layers. J. Fluid Mech. 659, 116–126 (2010)
Park, J., Choi, H.: Effects of uniform blowing or suction from a spanwise slot on a turbulent boundary layer flow. Phys. Fluids 11(10), 3095–3105 (1999)
Guo, H., Huang, Q.M., Liu, P.Q., Qu, Q.L.: Effects of local high-frequency perturbation on a turbulent boundary layer by synthetic jet injection. Fluid Dyn. Res. 47(4), 45,501 (2015)
Acknowledgements
This research was undertaken with the assistance of resources provided at the NCI National Facility systems at the Australian National University through the National Computational Merit Allocation Scheme supported by the Australian Government. Furthermore this work was supported by resources provided by The Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interests
The authors declare that they have no conflict of interest.
Rights and permissions
About this article
Cite this article
Schlanderer, S.C., Hutchins, N. & Sandberg, R.D. The Effect of Wall Normal Actuation on a Turbulent Boundary Layer. Flow Turbulence Combust 99, 807–821 (2017). https://doi.org/10.1007/s10494-017-9868-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10494-017-9868-0