Numerical Investigation on Effect of Multiple Winglets for Wind Turbine Applications

  • Authors

    • Prasad. G.
    • Ramesh. M.
    • Rajasekar. K.
    2018-09-22
    https://doi.org/10.14419/ijet.v7i4.5.20204
  • Wind Turbine, Winglets, Induced Drag, Computational Fluid Dynamics.

  • Abstract

    The present article is an effort to examine the potential of multiple winglets to reduce the induced drag of the aerodynamic surface. The advantages of using multiple winglets include reduction of induced drag, increased L/D and improved performance of the Wind turbine. Computational Fluid Dynamics is utilized as to approach the effects of multiple winglets with NACA 24012 airfoil section for untwisted, rectangular wing. The testing of configurations is done at Reynolds number 290,000. FLUENT solver incorporated in ANSYS used for the numerical investigation of the steady flow over the wing. A substantial improvement in lift curve slope occurs with dihedral spread of the winglets. The dihedral spread also distributes the tip vortices.

     

  • References

    1. [1] Richard Whitcomb, "Methods for Reducing Aerodynamic Drag," NASA Conference Publication 2211, Proceedings of Dryden Symposium, Edwards, California, 16 September 1981

      [2] Yates, John E., and Donaldson, Coleman , Fundamental Study Of Drag And An Assessment Of Conventional Drag-Due-To-Lift Reduction Devices, NASA Contract Rep 4004, Sep 1986

      [3] Richard Whitcomb, “A Design Approach and Selected Wind-Tunnel Results at High Subsonic Speeds for Wing-Tip Mounted Winglets,†NASA TN D-8260, July 1976

      [4] IlanKroo, John McMasters, and Stephen C. Smith, Highly Nonplanar Lifting Systems, Presented at: Transportation Beyond 2000: Technologies Needed for Engineering Design, NASA Langley Research Center, September 26-28, 1995

      [5] Gall, Peter D., and Smith, Hubert C., Aerodynamic Characteristics of Biplanes with Winglets, Journal of Aircraft 24 n 8 Aug 1987 p 518-522

      [6] Louis B. Gratzer, Spiroid-Tipped Wing, U. S. Patent 5,102,068, 7 April 1992

      [7] Ruhlin, Charles L., Bhatia, Kumar G., and Nagaraja, K. S., Effects of Winglet on Transonic Flutter Characteristics of A Cantilevered Twin-Engine Transport Wing Model. NASA Technical Paper 2627 Dec 1986

      [8] Meyer, Robert R. Jr., and Covel, Peter F. Effects of Winglets on A First-Generation Jet Transport Wing: VII—Sideslip Effects on Winglet Loads and Selected Wing Loads at Subsonic Speeds for A Full-Span Model. NASA Technical Paper 2619 Sep 1986 58p

      [9] Satran, Dale R., Wind-Tunnel Investigation of the Flight Characteristics ofa Canard General-Aviation Airplane Configuration. NASA Technical Paper 2623 Oct 1986 59p

      [10] Reginald V. French, Vortex Reducing Wing Tip, U. S. Paten 4,108,403, 22 August 1978

      [11] Joe Clark, President, Aviation Partners, Inc., personal communication, 12 July 1999

      [12] Colling, James David, Sailplane Glide Performance and Control Using Fixed and Articulating Winglets. NASA-CR-198579 May 01, 1995

      [13] Marchman, J. F., III Manor, D., and Faery, H. F., Jr., Whitcomb Winglet Applications To General Aviation Aircraft, Aircraft Systems and Technology Conference Los Angeles, Aug. 21-23, 1978 AIAA Paper 78-1478

      [14] Jones, Robert T., Improving The Efficiency Of Smaller Transport Aircraft, 14th Congress of the International Council of the Aeronautical Sciences, Proceedings, Vol. 1, Toulouse, Fr,1984

      [15] Chandrasekharan, Reuben M., Murphy, William R., Taverna, Frank P., and Boppe, Charles W., Computational Aerodynamic Design of the Gulfstream IV Wing. AIAA-85-0427, 1985

      [16] Slooff, J. W., On Wings and Keels (II). AIAA Monographs, v 31, p 67-85, Proceedings of the Fifteenth AIAA Symposium on the Aero/Hydronautics of Sailing, Seattle, September 21-22, 1985

      [17] Imamura, Hiroshi, Hasegawa, Yutaka, and Kikuyama, Koji, Numerical Analysis Of The Horizontal Axis Wind Turbine With Winglets, JSME International Journal, Series B Feb 1998 JSME Tokyo Japan p 170-176.

      [18] Rechenberg, I., Vortex Screw, A New Concept For Wind Power Augmentation, European Wind Energy Conference 1984: Proceedings of an International Conference, Hamburg, Germany

      [19] Heinz G. Klug, Auxiliary Wing Tips for an Aircraft, U. S. Patent 4,722,499, 2 February 1988

      [20] Vance A. Tucker, Gliding Birds: Reduction Of Induced Drag By Wing Tip Slots Between The Primary Feathers, Journal of Experimental Biology, Vol. 180(1) 1993, pp. 285-310

      [21] IlanKroo and Masami Takai, A Quasi- Procedural, Knowledge-Based System for Aircraft Design, AIAA Paper AIAA-88-6502

      [22] Santos, Jonathan, Wingtip Airfoils, U. S. Patent 4,595,160, 17 June 1986

      [23] Spillman, J.J., “The use of wing tip sails to reduce vortex drag,†Aeronautical Journal, Sep., 1978, pp. 387-395.

      [24] Prasad, G., Vijayaganth, V., Sivaraj, G., Rajasekar, K., Ramesh, M., Raj, R. G., & Matheeswaran, P. (2018, January). Positioning of UAV using algorithm for monitering the forest region. In 2018 2nd International Conference on Inventive Systems and Control (ICISC). IEEE.

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  • How to Cite

    G., P., M., R., & K., R. (2018). Numerical Investigation on Effect of Multiple Winglets for Wind Turbine Applications. International Journal of Engineering & Technology, 7(4.5), 450-454. https://doi.org/10.14419/ijet.v7i4.5.20204

    Received date: 2018-09-24

    Accepted date: 2018-09-24

    Published date: 2018-09-22