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Improved Delayed Detached-Eddy Simulations of Actively Controlled Flow

  • Liang Wang
  • Ruyun Hu
  • Liying Li
  • Song FuEmail author
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 137)

Abstract

In this study, Improved Delayed Detached-Eddy Simulations (IDDES) were conducted for active flow control with a harmonic actuation on a backward-facing step (BFS) and pulsed blowing on a NACA0015 airfoil for reattachment and separation controls. By using Dynamic Mode Decomposition, the characteristic physical modes of the unexcited flow have been extracted for both cases. With better understanding of unsteady flow features, effective control practices were illustrated. For the BFS case, the optimum excitation frequency was found identical with the step-mode frequency of the baseline flow. Such harmonic actuation enhanced the pairing process, forming the largest scale spanwise coherent structures in the free shear layer, resulting in 40% the maximum reduction of the bubble length. For the airfoil case, with the optimum excitation frequency that determined by the vortex-shedding mode of the baseline flow, 194% the increase of the lift-to-drag ratio was obtained.

Notes

Acknowledgements

This work was supported by the National Key Basic Research Program of China (2014CB744801), the EU-China Joint Project MARS (266326), the NSFC Grants 11572177, 51376106 & 11272183, and the Tsinghua University initiative Scientific Research Program (2014z21020).

References

  1. 1.
    Avdis, A., Lardeau, S., Leschziner, M.: Large eddy simulation of separated flow over a two-dimensional hump with and without control by means of a synthetic slot-jet. Flow Turbul. Combust. 83(3), 343–370 (2009)Google Scholar
  2. 2.
    Bell, J.H., Mehta, R.D.: Development of a two-stream mixing layer from tripped and untripped boundary layers. AIAA J. 28, 2034–2042 (1990)Google Scholar
  3. 3.
    Bell, J.H., Mehta, R.D.: Effects of imposed spanwise perturbations on plane mixing-layer structure. J. Fluid Mech. 257, 33–63 (1993)Google Scholar
  4. 4.
    Chun, K.B., Sung, H.: Control of turbulent separated flow over a backward-facing step by local forcing. Exp. Fluids 21(6), 417–426 (1996)Google Scholar
  5. 5.
    Collis, S.S., Joslin, R.D., Seifert, A., Theofilis, V.: Issues in active flow control: theory, control, simulation and experiment. Prog. Aerosp. Sci. 40, 237–289 (2004)Google Scholar
  6. 6.
    De Brederode, V.A.S.L., Bradshaw, P.: Three-dimensional Flow in Nominally Two-dimensional Separation Bubbles: Flow Behind a Rearward-facing Step. I. Department of Aeronautics. Imperial College of Science and Technology (1972)Google Scholar
  7. 7.
    Driver, D.M., Seegmiller, H.L., Marvin, J.G.: Time-dependent behavior of a reattaching shear layer. AIAA J. 25(7), 914–919 (1987)Google Scholar
  8. 8.
    Duvigneau, R., Labroquère, J., Guilmineau, E.: Comparison of turbulence closures for optimized active control. Comput. Fluids (2015)Google Scholar
  9. 9.
    El-Hack, M.G., Pollard, A., Bonnet, J.P.: Flow Control: Fundamentals and Practices. Springer (1998)Google Scholar
  10. 10.
    Fiedler, H.E., Fernholz, H.H.: On management and control of turbulent shear flows. Prog. Aerosp. Sci. 27(4), 305–387 (1990)Google Scholar
  11. 11.
    Hu, R., Wang, L., Fu, S.: Investigation of the coherent structures in flow behind a backward-facing step. Int. J. Numer. Methods Heat Fluid Flow 26(3/4), 1050–1068 (2016)Google Scholar
  12. 12.
    Hussain, A.K.M.F., Reynolds, W.C.: The mechanics of an organized wave in turbulent shear flow. J. Fluid Mech. 41(02), 241–258 (1970)Google Scholar
  13. 13.
    Lasheras, J.C., Cho, J.S., Maxworthy, T.: On the origin and scale of streamwise vortical structures in a plane, free shear-layer. J. Fluid Mech. 172, 231–258 (1986)Google Scholar
  14. 14.
    Jakarlić, S., Jester-Zürker, R., Tropea, C.: Proceedings of the 9th ERCOFTAC/IAHR/COST Workshop on Refined Turbulence Modelling (2009)Google Scholar
  15. 15.
    Kaiktsis, L., Karniadakis, G.E., Orszag, S.A.: Unsteadiness and convective instabilities in two-dimensional flow over a backward-facing step. J. Fluid Mech. 321, 157–187 (1996)Google Scholar
  16. 16.
    Kiya, M.S., Shimizu, M., Mochizuki, O.: Sinusoidal forcing of a turbulent separation bubble. J. Fluid Mech. 342, 119–139 (1997)Google Scholar
  17. 17.
    Larchevêque, L., Sagaut, P., Lê, T.H., Comte, P.: Large-eddy simulation of a compressible flow in a three-dimensional open cavity at high reynolds number. J. Fluid Mech. 516, 265–301 (2004)Google Scholar
  18. 18.
    Hasan, M.A.Z.: The flow over a backward-facing step under controlled perturbation: laminar separation. J. Fluid Mech. 23, 73–96 (1992)Google Scholar
  19. 19.
    Menter, F.R.: Two-equation eddy-viscosity turbulence models for engineering applications. AIAA J. 32(8), 1598–1605 (1994)Google Scholar
  20. 20.
    Mockett, C.: A comprehensive study of detached-eddy simulation. Ph.D. thesis, Technische Universitaet Berlin (2009)Google Scholar
  21. 21.
    Pack Melton, L., Yao, C.S., Seifert, A.: Active control of separation from the flap of a supercritical airfoil. AIAA J. 44(1), 34–41 (2006)Google Scholar
  22. 22.
    Rowley, C.W., Mezić, I., Bagheri, S., Schlatter, P., Henningson, D.S.: Spectral analysis of nonlinear flows. J. Fluid Mech. 641, 115–127 (2009)Google Scholar
  23. 23.
    Schmid, P.J.: Dynamic mode decomposition of numerical and experimental data. J. Fluid Mech. 656, 5–28 (2010)Google Scholar
  24. 24.
    Shur, M.L., Spalart, P.R., Strelets, M.K., Travin, A.K.: A hybrid RANS-LES approach with delayed-DES and wall-modelled LES capabilities. Int. J. Heat Fluid Flow 29(6), 1638–1649 (2008)Google Scholar
  25. 25.
    Siauw, W.L., Bonnet, J.P., Tensi, J., et al.: Transient dynamics of the flow around a NACA 0015 airfoil using fluidic vortex generators. Int. J. Heat Fluid Flow 31(3), 450–459 (2010)Google Scholar
  26. 26.
    Sigurdson, L.W.: The structure and control of a turbulent reattaching flow. J. Fluid Mech. 298, 139–165 (1995)Google Scholar
  27. 27.
    Smith, B., Glezer, A.: Vectoring and small-scale motions effected in free shear flows using synthetic jet actuators. AIAA paper 97–0213 (1997)Google Scholar
  28. 28.
    Spalart, P.: Young Person’s Guide to Detached-Eddy Simulation Grids. NASA CR 2001-211032Google Scholar
  29. 29.
    Spalart, P.R., Jou, W.H., Strelets, M., Allmaras, S.R.: Comments on the feasibility of LES for wings, and on a hybrid RANS/LES approach. In: Advances in DNS/LES, vol. 1, pp. 4–8 (1997)Google Scholar
  30. 30.
    Spalart, P.R., Deck, S., Shur, M.L., Squires, K.D., Strelets, M.K., Travin, A.: A new version of detached-eddy simulation, resistant to ambiguous grid densities. Theor. Comput. Fluid Dyn. 20(3), 181–195 (2006)Google Scholar
  31. 31.
    Travin, A., Shur, M., Strelets, M.M., Spalart, P.R.: Physical and numerical upgrades in the detached-eddy simulation of complex turbulent flows. In: Advances in LES of Complex Flows, pp. 239–254. Springer Netherlands (2002)Google Scholar
  32. 32.
    Wang, W., Siouris, S., Qin, N.: Hybrid RANS/LES for active flow control. Aircr. Eng. Aerosp. Technol. 86(3), 179–187 (2014)Google Scholar
  33. 33.
    Wang, L., Mockett, C., Knacke, T., Thiele, F.: Detached-eddy simulation of landing-gear noise. In: 19th AIAA/CEAS Aeroacoustics Conference, pp. 2013–2069, Berlin, Germany, 27–29 May 2013Google Scholar
  34. 34.
    Wang, L., Fu, S.: Detached-eddy simulation of flow past a pitching NACA 0015 airfoil with pulsed actuation. Aerosp. Sci. Technol. 69, 123–135 (2017)Google Scholar
  35. 35.
    Wang, Z., Wang, L., Fu, S.: Control of stationary crossflow modes in swept Hiemenz flows with dielectric barrier discharge plasma actuators. Phys. Fluids 29, 094105 (2017)Google Scholar
  36. 36.
    Wang, L., Li, L.Y., Fu, S.: Numerical investigation of active flow control on a pitching NACA 0015 airfoil using detached-eddy Simulation. In: 52nd AIAA Aerospace Sciences Meeting, Washingdon, USA (2014)Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Department of Engineering MechanicsTsinghua UniversityBeijingChina
  2. 2.Department of Engineering MechanicsShanghai Jiao Tong UniversityShanghaiChina
  3. 3.AVIC Aerodynamics Research InstituteHarbinChina

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