Experimental and Numerical Investigation on Delta-Wing Post-stall Flow Control

  • Andrei BuzicaEmail author
  • Christian Breitsamter
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 136)


The flow around delta wings is dominated by a leading-edge vortex system, which induces increased near wall velocities above the wing hence producing high suction peaks. These are responsible for the lift needed at high angle of attack aircraft maneuvering. In the flight regime beyond stall the flow separating from the leading-edge encounters a very steep adverse pressure gradient and consequently doesn’t roll up into a vortex-like structure. Rather, encloses a massive dead-water region over the entire wing. With unsteady jet blowing at the leading edge additional momentum is created leading to a reattachment of the flow at the wing surface thus increasing the lift significantly. The investigated flow control method can be applied for extending the flight envelope, enhancing maneuvering capability and flight stability. This flow manipulation technique is investigated on a generic half wing model at a very high angle of attack (α = 45°). The investigations comprise wind tunnel testing, using force measurements and stereoscopic particle image velocimetry, and complementary scale resolving numerical simulations, for a detailed analysis of the unsteady phenomena.



The funding of the research activity by the “Deutsche Forschungsgemeinschaft” (DFG) through the project DFG-BR1511-6 is gratefully acknowledged by the authors. Furthermore‚ special thanks are addressed to ANSYS Inc. for providing the software for the CFD simulations and to the Gauss Centre for Supercomputing/Leibniz Supercomputing Centre for the provision of the computer resources.


  1. 1.
    Gursul, I.: Review of unsteady vortex flows over delta wings. J. Aircr. 42(2), 23–26 (2005)CrossRefGoogle Scholar
  2. 2.
    Lucca-Negro, O., O’Doherty, T.: Vortex breakdown: a review. Prog. Energy Combust. Sci. 27(4), 431–481 (2001)CrossRefGoogle Scholar
  3. 3.
    Gursul, I., Wang, Z., Vardaki, E.: Review of flow control mechanisms of leading-edge vortices. Prog. Aerosp. Sci. 43(7–8), 246–270 (2007)CrossRefGoogle Scholar
  4. 4.
    Gad-El-Hak, M., Blackwelder, R.F.: Control of the discrete vortices from a delta wing. AIAA J. 25(8), 1042–1049 (1987)CrossRefGoogle Scholar
  5. 5.
    Breitsamter, C.: Unsteady flow phenomena associated with leading-edge vortices. Prog. Aerosp. Sci. 44, 48–65 (2008)CrossRefGoogle Scholar
  6. 6.
    Kölzsch, A., Blanchard, S., Breitsamter, C.: Dynamic actuation for delta wing post stall flow control. In: Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol. 132, pp. 823–832 (2014)Google Scholar
  7. 7.
    Breitsamter, C.: Turbulente Strömungsstrukturen an Flugzeugkonfigurationen mit Vorderkantenwirbeln, Dissertation, Technische Universität München, Herbert Utz Verlag, ISBN 3-89675-201-4 (1997)Google Scholar
  8. 8.
    Hummel, D.: The second international vortex flow experiment (VFE-2): results of the first phase 2003–2008. In: Proceedings of Conference on the 26th Congress of ICAS, Anchorage, Alaska (2008)Google Scholar
  9. 9.
    Stanislas, M., Okamoto, K., Kähler, C.J.: Main results of the first international PIV challenge. Exp. Fluids 39, 170–191 (2005)CrossRefGoogle Scholar
  10. 10.
    Menter, F.R., Kuntz, M.: Adaptation of eddy-viscosity turbulence models to unsteady separated flow behind vehicles. In: The Aerodynamics Of Heavy Vehicles: Trucks, Buses, And Trains, pp. 339–352. Springer, Berlin (2004)Google Scholar
  11. 11.
    Spalart, P.R.: Detached-eddy simulation. Annu. Rev. Fluid Mech. 41(1), 181–202 (2009)CrossRefzbMATHGoogle Scholar
  12. 12.
    ANSYS CFX-solver theory guide. ANSYS CFX Release 15.0 (2013)Google Scholar
  13. 13.
    Spalart, P.R.: Young-person’s guide to detached-eddy simulation grids. NASA STI (2001)Google Scholar
  14. 14.
    Schiavetta, L.A., Badcock, K.J., Cummings, R.M.: Comparison of DES and URANS for unsteady vortical flows over delta wings. In: Proceedings of Conference on the 45th AIAA Aerospace Sciences Meeting and Exhibit (2007)Google Scholar
  15. 15.
    Rediniotis, O.K., Stapountzis, H., Telionis, D.P.: Periodic vortex shedding over delta wings. AIAA J. 31(9), 1555–1562 (1993)CrossRefGoogle Scholar
  16. 16.
    Buzica, A., Bartasevicius, J., Breitsamter, C.: Active vortex flow control on a generic delta wing, In: Proceedings of the 30th Congress of ICAS, Daejon, South Korea (2016)Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Chair of Aerodynamics and Fluid MechanicsTechnical University of MunichGarchingGermany

Personalised recommendations