The feasibility of using surface-normal jets near the flap trailing edge as active aerodynamic load control on the two-element airfoil NLR-7301 at a high-lift condition was explored. Using structured curvilinear overset grids and the Reynolds-averaged Navier–Stokes solver, OVERFLOW-2, the two-dimensional flowfield around the airfoil was characterized. The relationship between surface-normal jets with various momentum-coefficient settings, C μ = 0.00 0.04 , and lift enhancement is found to be Δ C l 3.61 C μ for this airfoil. It is discussed in this paper that using a surface-normal jet with C μ = 0.01 can shift the linear region of the lift curve by Δ C l = 0.37 and Δ C l = 0.27 for the pressure- and suction-side jets, respectively. Further, employing a drag decomposition study, it is shown that, for a given C l = 2.50 , a surface-normal jet with C μ = 0.01 on the pressure and suction sides of the airfoil results in a 110 drag count decrement and a 43 drag count increment, respectively, compared to the baseline airfoil with no jet. These results show that large and controllable changes in aerodynamic performance can be achieved by relatively small active flow control inputs using the surface-normal jets presented in this study.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Aerodynamic Load Control for Multi-Element Airfoils Using Surface-Normal Trailing-Edge Blowing


    Beteiligte:

    Erschienen in:

    Journal of Aircraft ; 56 , 4 ; 1668-1676


    Erscheinungsdatum :

    2019-04-26


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Trailing-Edge Blowing on Tandem Airfoils: Aerodynamic and Aeroacoustic Implications

    Winkler, Julian / Carolus, Thomas / Scheuerlein, Jörg et al. | AIAA | 2010


    Aerodynamic Performance of Thick Blunt Trailing Edge Airfoils

    Cooperman, Aubryn / McLennan, Anthony / Baker, Jonathon et al. | AIAA | 2010


    Aerodynamic Performance of Thick Blunt Trailing Edge Airfoils

    Cooperman, A. / McLennan, A. / Baker, J. et al. | British Library Conference Proceedings | 2010


    Aerodynamic analysis of nonuniform trailing edge blowing

    Liang, Dong / Wang, Wenjie / Thomas, Peter J. | Emerald Group Publishing | 2018


    Research on Wind Turbine Airfoils Aerodynamic Performance of Trailing Edge Modification

    Yuan, Shang Ke ;Zhao, Zi Qin | Trans Tech Publications | 2015