Paper presents a review and summary of turbulent drag reduction approaches applicable to external flows. Because relatively recent and exhaustive reviews exist for laminar flow control and polymer (hydrodynamic) drag reduction, the paper focuses upon the emerging areas of nonplanar geometry and large eddy alteration. Turbulent control techniques for air generally result in modest (but technologically significant) drag reductions (order of 20 percent or less) whereas hydrodynamic approaches can yield drag reductions the order of 70 percent. Paper also includes suggestions for alternative concepts and optimization of existing approaches.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Turbulent drag reduction for external flows


    Contributors:

    Conference:

    American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting ; 1983 ; Reno, NV


    Publication date :

    1983-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :



    Drag Reduction in Turbulent and Laminar Flows Using Deflectable Surface

    Nazari, Ali / Darbandi, Masoud / Schneider, Gerry | AIAA | 2009


    Drag Reduction in Turbulent and Laminar Flows Using Deflectable Surface

    Nazari, A. / Darbandi, M. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2009


    Drag Reduction in Turbulent Pipe Flows of Aqueous Xanthan Gum Solutions

    Genguang, Z. / Mingyuan, Z. / Wanying, Y. | British Library Online Contents | 2007


    Drag Reduction by Spanwise Wall Oscillation in Wall-Bounded Turbulent Flows

    Jung-Il Choi / Chun-Xiao Xu / Hyung Jin Sung | AIAA | 2002