Abstract
Steady air blowing (suction) into a turbulent boundary layer on the NACA 0012 airfoil through singular slots located on the opposite sides near the trailing edge is studied experimentally and numerically. The investigations are performed at the Reynolds number Rec = 0.7 · 106 in the range of the angles of attack α from −6 to 6°; the intensity of the injected and sucked jet characterized by a dimensionless momentum coefficient does not exceed 10−3. It is demonstrated that the result of blowing is not only an increase in the lift force, but also significant enhancement of the drag force of the airfoil. In the case of suction, the increase in the lift force is appreciably smaller despite airfoil drag reduction.
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L. Huang, P. G. Huang, and R. P. LeBeau, “Numerical Study of Blowing and Suction Control Mechanism on NACA0012 Airfoil,” AIAA J. 41(1), 1–9 (2004).
A. Tuck and J. Soria, “Active Flow Control over a NACA 0015 Airfoil Using a ZNMF Jet,” in Proc. of the 15th Austral. Fluid Mechanics Conf., Sydney (Australia), December 13–17, 2004 (University of Sydney, Sydney, 2006).
C. Wong and K. Kontis, “Flow Control by Spanwise Blowing on a NACA 0012 Airfoil,” J. Aircraft 44(1), 338–340 (2007).
K. Yousefi, R. Saleh, and P. Zahedi, “Numerical Study of Blowing and Suction Slot Geometry Optimization on NACA 0012 Airfoil,” J. Mech. Sci. Technol. 28(4), 1297–1310 (2014).
K. Yousefi and R. Saleh, “The Effects of Trailing Edge Blowing on Aerodynamic Characteristics of the NACA 0012 Airfoil and Optimization of the Blowing Slot Geometry,” J. Theoret. Appl. Mech. 52(1), 165–179 (2014).
D. J. Heathcote, N. Al-Battal, I. Gursul, and D. J. Cleaver, “Control of Wing Loads by Means of Blowing and Mini-Tabs,” in Proc. of the Europ. Drag Reduction and Flow Control Meeting (EDRFCM 2015), Cambridge (UK), March 23–26, 2015 (University of Cambridge, Cambridge, 2015), pp. 61–62.
A. Shmilovich, Y. Yadlin, and E. Whalen, “Computational Evaluation of Flow Control for Enhanced Control Authority of a Vertical Tail,” in Proc. of the 29th Congr. of Int. Council of the Aeronautical Sciences, St. Petersburg (Russia), September 7–12, 2014 (Curran Associates, New York, 2014), Vol. 2, pp. 1446–1456.
D. F. Abzalilov, “Aerodynamic Design and Optimization of the Airfoil Shape in Complex Flows,” Doct. Dissertation in Phys. and Math. Sci. (Kazan’, 2008).
M. Bauer, T. Grund, and W. Nitsche, “Experiments on Active Drag Reduction on a Complex Outer Wing Model,” AIAA J. 53(7), 1774–1783 (2015).
V. I. Kornilov, “Control of Turbulent Boundary Layer on a Wing Section by Combined Blowing/Suction,” Teplofiz. Aeromekh. 25(2), 163–176 (2018) [Thermophys. Aeromech. 25 (2), 155–167 (2018)].
M. Blaylock, R. Chow, A. Cooperman, and C. P. van Dam, “Comparison of Pneumatic Jets and Tabs for Active Aerodynamic Load Control,” Wind Energy J. 17(9), 1365–1384 (2014).
C. S. Boeije, H. de Vries, I. Cleine, et al., “Fluidic Load Control for Wind Turbine Blades,” AIAA Paper No. 2009–684 (2009).
N. Al-Battal, D. Cleaver, and I. Gursul, “Lift Reduction by Counter Flowing Wall Jets,” Aerospace Sci. Technol. 78, 682–695 (2018).
B. M. Jones, “The Measurement of Profile Drag by the Pitot Traverse Method,” Aeronaut. Res. Council, Rep. Memoranda No. 1668 (1936).
N. Gregory and C. L. O’Reilly, “Low-Speed Aerodynamic Characteristics of NACA 0012 Airfoil Section, Including the Effects of Upper-Surface Roughness Simulating Hoar Frost,” Report Memoranda No. 3726 (Aeronaut. Res. Council, 1973).
R. M. C. So and G. L. Mellor, “Experiment on Convex Curvature Effects in Turbulent Boundary Layers,” J. Fluid Mech. 60, 43–62 (1973).
R. N. Meroney and P. Bradshaw, “Turbulent Boundary-Layer Growth over a Longitudinally Curved Surface,” AIAA J. 13(1), 1448–1453 (1975).
V. T. Bui and V. I. Lapygin, “On the Influence of the Model Size on Its Aerodynamic Characteristics in a Low-Velocity Wind Tunnel,” Mat. Model. 27(5), 28–38 (2015).
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Original Russian Text © V.I. Kornilov, I.N. Kavun, A.N. Popkov.
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 60, No. 5, pp. 105–116, September–October, 2019.
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Kornilov, V.I., Kavun, I.N. & Popkov, A.N. Effect of Air Blowing and Suction Through Single Slots on the Aerodynamic Performances of an Airfoil. J Appl Mech Tech Phy 60, 871–881 (2019). https://doi.org/10.1134/S0021894419050109
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DOI: https://doi.org/10.1134/S0021894419050109