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Circular cylinder drag reduction using piezoelectric actuators

  • Orazi, Matteo (Dipartimento di Ingegneria Meccanica e Aerospaziale) ;
  • Lasagna, Davide (Dipartimento di Ingegneria Meccanica e Aerospaziale) ;
  • Iuso, Gaetano (Dipartimento di Ingegneria Meccanica e Aerospaziale)
  • Received : 2013.07.27
  • Accepted : 2013.10.03
  • Published : 2014.01.31
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Abstract

An active flow control technique based on "smart-tabs" is proposed to delay flow separation on a circular cylinder. The actuators are retractable and orientable multilayer piezoelectric tabs which protrude perpendicularly from the model surface. They are mounted along the spanwise direction with constant spacing. The effectiveness of the control was tested in pre-critical and in post-critical regime by evaluating the effects of several control parameters of the tabs like frequency, amplitude, height, angular position and plate incidence with respect to the local flow. Measurements of the mean static pressure distribution around the cylinder were used to estimate the pressure drag coefficient. The maximum drag reduction achieved in the pre-critical regime was of the order of 30%, whereas in the post-critical regime was about 10%, 3% of which due to active forcing. Furthermore, pressure fluctuation measurements were performed and spectral analysis indicated an almost complete suppression of the vortex shedding in active forcing conditions.

Keywords

References

  1. Angele, K.P. and Muhammad-Klingmann, B. (2005), "The effect of streamwise vortices on the turbulence structure of a separating boundary layer", Eur. J. Mech. - B/Fluids, 24, 539-554. https://doi.org/10.1016/j.euromechflu.2005.01.005
  2. Bera, J.C., Michard, M., Sunyach, M. and Comte-Bellot, G, (2000), "Changing lift and drag by jet oscillation: experiments on a cylinder with turbulent separation", Eur. J. Mech.- B/Fluids, 19(5), 575-595. https://doi.org/10.1016/S0997-7546(00)00122-9
  3. Choi, H., Jeon, W. P. and Kim, J. (2008), "Control of flow over a bluff body", Ann. Rev. Fluid Mech., 40 113-139. https://doi.org/10.1146/annurev.fluid.39.050905.110149
  4. Glezer, A. andAmitay, M.J. (2002), "Synthetic jets", Ann. Rev. Fluid Mech., 34, 503-529. https://doi.org/10.1146/annurev.fluid.34.090501.094913
  5. Godard, G. and Stanislas, M. (2006), "Control of a decelerating boundary layer. Part 1: Optimization of passive vortex generators", Aero. Sci. Tech., 10, 181 -191. https://doi.org/10.1016/j.ast.2005.11.007
  6. Griffin, O.M. and Hall, M.S. (1991), "Vortex shedding lock-on and flow control in bluff body wakes", J. Fluid. Eng., 113 526-537. https://doi.org/10.1115/1.2926511
  7. Haller, D., Hempel, J., Paetzold, A., Losse, N., Peltzer, I., Nitsche, W., King, R. et al. (2009), "A piezo-actuated closed loop MEMS system for active delay of transition", TRANSDUCERS 2009. International Solid State Sensors Actuators and Microsystems Conference doi:10.1109/SENSOR.2009
  8. Jukes, T.N. and Choi, K.S. (2009), "Control of unsteady flow separation over a circular cylinder using dielectric-barrier-discharge surface plasma", Phys. Fluids, 21, 094106. https://doi.org/10.1063/1.3237151
  9. Laws, E.M. and Livesey, J.L. (1978), "Flow through screens", Ann.Rev. Fluid Mech., 10, 247-266. https://doi.org/10.1146/annurev.fl.10.010178.001335
  10. Lin, J.C. (2002), "Review of research on low-profile vortex generators to control boundary layer separation", Porg. Aerosp. Sci., 38 (4-5), 389-420. https://doi.org/10.1016/S0376-0421(02)00010-6
  11. Muddada, S. and Patnaik, B.S.V. (2010), "An active flow control strategy for the suppression of vortex structures behind a circular cylinder", Eur. J. Mech. - B/Fluids, 29, 93-104. https://doi.org/10.1016/j.euromechflu.2009.11.002
  12. Naim, A., Seifert, A. and Wygnanski, I. (2002), "Active control of cylinder flow with and without a splitter plate using piezoelectric actuators", 1st Flow Control Conference St. Luis, Missouri, AIAA paper 2002-3070.
  13. Ng, J.H., Li, J., Cui, Y.D. and Lim, T.T. (2013), "Active flow control on a circular cylinder via streamwise-oriented dielectric barrier discharge plasma actuators", 51st AIAA Aerospace Sciences Meeting Including the new Horizons Forum and Aerospace Exposition, Grapevine, Texas, AIAA 2013-0349.
  14. Park, H., Lee, D., Jeon, W.P., Hahn, S., Kim, J.E., Kim ,J.U., Choi, J. and Choi, H. (2006), "Drag reduction in flow over two-dimensional bluff body with blunt trailing edge using a new passive device", J. Fluid Mech., 563, 389-414. https://doi.org/10.1017/S0022112006001364
  15. Pujals, G., Depardon, S. and Cossu, C. (2010), "Drag reduction of a 3D bluff body using coherent streamwise streaks", Exp. Fluids, 49, 1085-1094. https://doi.org/10.1007/s00348-010-0857-5
  16. Roshko, A. (1955), "On the wake and drag of bluff bodies", J. Aeronaut. Sci., 22,124-132. https://doi.org/10.2514/8.3286
  17. Sharma, S.D. and Deshpande, P.J. (2010), "Innovative approach to generation of streamwise vortices in the wake of a blunt trailing edge", 37th National & 4th International Conference on Fluid Mechanics and Fluid Power, December 16-18, 2010, IITMadars, Chennai, India.
  18. Shtendel, T. and Seifert, A. (2012), " Flow physics of bluff body drag reduction using active flow control", EFMC9, Rome, Italy.
  19. Thomas, F.O., Kozlov, A. and Corke, T.C. (2008), "Plasma actuators for cylinder flow control and noise reduction", AIAA J., 46(8), 1921-1931. https://doi.org/10.2514/1.27821

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  1. Noise Filtering for Wall-Pressure Fluctuations in Measurements Around a Cylinder With Laminar and Turbulent Flow Separation vol.138, pp.6, 2016, https://doi.org/10.1115/1.4032034