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Master Thesis_Zhengkai He.pdf (3.75 MB)
ETD Abstract Container
Abstract Header
Study on the Vortex Wake of an Airfoil Equipped with Flexible Trailing Edge Fringes
Author Info
He, Zhengkai
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=wright1401738102
Abstract Details
Year and Degree
2014, Master of Science in Engineering (MSEgr), Wright State University, Mechanical Engineering.
Abstract
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.
Committee
Zifeng Yang, Ph.D (Advisor)
Joseph Shang, Ph.D (Committee Member)
Ha-Rok Bae, Ph.D (Committee Member)
Pages
82 p.
Subject Headings
Mechanical Engineering
Keywords
Airfoil S833
;
Trailing Edge Fringe
;
Noise Reduction
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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)
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Document number:
wright1401738102
Download Count:
1,438
Copyright Info
© 2014, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.