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Study on the Vortex Wake of an Airfoil Equipped with Flexible Trailing Edge Fringes

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2014, Master of Science in Engineering (MSEgr), Wright State University, Mechanical Engineering.
With the inspiration of owl’s silent flight, a traditional airfoil S833 equipped with flexible fringes on the trailing edge is investigated through numerical simulation and experiments in a wind tunnel. The newly constructed airfoil is modeled and numerically investigated. An incompressible, 2D and viscous flow solver in the Computational Fluid Dynamics (CFD) software FLUENT is utilized to conduct the numerical simulation on the vortex flow feature in the wake of the airfoil. A User Defined Function code was applied to generate the defined motion of flexible fringes. The effects of the flapping frequency of the fringe and the deformation pattern of the fringe are investigated in the parametric study. On the other hand, the airfoil model with the flexible fringe is manufactured for the experimental study. A digital Particle Image Velocimetry (PIV) system is employed to investigate the flow structure in the wake and the deformation of the flexible fringes. The motion of the trailing edge fringes is extracted from the experimental measurements as the input for CFD simulation. It has been found that the addition of the flexible fringe has a significant effect on the flow characteristics in the vortex wake downstream of the airfoil as well as the aerodynamic performance of the airfoil.
Zifeng Yang, Ph.D (Advisor)
Joseph Shang, Ph.D (Committee Member)
Ha-Rok Bae, Ph.D (Committee Member)
82 p.

Recommended Citations

Citations

  • He, Z. (2014). Study on the Vortex Wake of an Airfoil Equipped with Flexible Trailing Edge Fringes [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401738102

    APA Style (7th edition)

  • He, Zhengkai. Study on the Vortex Wake of an Airfoil Equipped with Flexible Trailing Edge Fringes . 2014. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1401738102.

    MLA Style (8th edition)

  • He, Zhengkai. "Study on the Vortex Wake of an Airfoil Equipped with Flexible Trailing Edge Fringes ." Master's thesis, Wright State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401738102

    Chicago Manual of Style (17th edition)