Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/73103
Title: A study of wake structures of a heaving two-dimensional elliptic airfoil using DPIV technique
Authors: Lua, K.B. 
Lim, T.T. 
Yeo, K.S. 
Oo, G.Y.
Issue Date: 2007
Source: Lua, K.B.,Lim, T.T.,Yeo, K.S.,Oo, G.Y. (2007). A study of wake structures of a heaving two-dimensional elliptic airfoil using DPIV technique. Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting 5 : 3432-3445. ScholarBank@NUS Repository.
Abstract: The formation of the wake structures of a two-dimensional (2D) elliptic airfoil executing a simple harmonic heaving motion is investigated using Digital Particle Image Velocimetry (DPIV) technique. This work is motivated partly by the lack of experimental data on a 2D heaving elliptic airfoil and partly by the anomaly between the numerical results of Lewin and Haj-Hariri [Lewin, G. C. and Haj-Hariri, H., "Modelling thrust generation of a two-dimensional heaving airfoil in viscous flow," Journal of Fluid Mechanics, Vol. 492, 2003, pp. 339-362] and dye visualization results of Lai and Platzer [Lai, J. C. S and Platzer, M. F., "Jet Characteristics of a Plunging Airfoil", AIAA Journal, Vol. 37, No. 12, 1999, pp. 1529-1537]. The former study found that both the leading edge vortices (LEV) and the trailing edge vortices (TEV) contributed to the formation of the wake structures of a 2D heaving elliptic airfoil, whereas the latter study showed that only the TEV contributed to the wake structures of a heaving NACA 0012 airfoil. Possible reasons for the anomaly are provided.
Source Title: Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
URI: http://scholarbank.nus.edu.sg/handle/10635/73103
ISBN: 1563478900
Appears in Collections:Staff Publications

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