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UNSTEADY AERODYNAMICS OF CAMBERED AIRFOILS AT LOW REYNOLDS NUMBER
Date
2021-09-10
Author
Ahmed, Tawfiq
Kurtuluş, Dilek Funda
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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http://aiac.ae.metu.edu.tr/paper.php?No=AIAC-2021-138
https://hdl.handle.net/11511/95418
Conference Name
11th Ankara International Aerospace Conference
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Department of Aerospace Engineering, Conference / Seminar
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UNSTEADY AERODYNAMICS OF CAMBERED AIRFOILS AT LOW REYNOLDS NUMBER
AHMED, TAWFIQ; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2022-2)
Almost all the insects and birds fly at very low Reynolds numbers. Therefore, to design micro air vehicles (MAVs), a study of airfoils and wings at low Reynolds numbers is essential. Unsteady flow behavior at low Reynolds numbers can vary for different airfoils depending on their camber, maximum thickness, or maximum camber position. Numerical simulations of cambered airfoils (NACA 1412, NACA 2412, NACA 3412, NACA 4412) at Re = 1000 are conducted in the current study to understand the camber effect on the u...
UNSTEADY AERODYNAMICS OF PLUNGING AND STATIONARY SYMMETRIC AIRFOILS AT LOW REYNOLDS NUMBERS
Peerzada, Kifa; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2023-1-10)
The unsteady behavior of the flow around a symmetric NACA 0014 airfoil is analyzed taking into consideration an oscillating motion in a sinusoidal pure-plunge mode as well as the stationary condition. Numerical simulations are performed by incorporating the two-dimensional unsteady, incompressible Navier-Stokes equation at Reynolds number (Re) = 10^4. The flow is visualized at the following two angle of attacks: 0^° and 4^°. The flow is assumed to be laminar at this Reynolds number. Flow properties such as:...
Unsteady Aerodynamics of Flapping Airfoil in Hovering Flight at Low Reynolds Numbers
Farcy, Alain; Kurtuluş, Dilek Funda; Alemdaroğlu, Hüseyin Nafiz (2005-01-13)
The major aim of flapping motion research is based on the understanding of the relation between the temporal and the spatial changes of the wake structure and the resulting instantaneous aerodynamic forces over the flapping wings. The essential physics of nonsteady airfoil problems can be observed from simplified two-dimensional experiments, and the interpretations of the behavior can be supported by theoretical or numerical models. The aim of this study is to find optimum parameters to generate maximum lif...
Unsteady aerodynamics of rapidly pitched airfoils
Wu, James C; Tuncer, İsmail Hakkı; Wang, Cm (1986-05-01)
Unsteady aerodynamics of stationary/flapping airfoil combination in tandem
Tuncer, İsmail Hakkı; Ortiz, Ma; Platzer, Max F (null; 1997-01-01)
Unsteady flowfields over a stationary/flapping airfoil combination in tandem are computed using a Reynolds averaged Navier-Stokes solver. A single C-type grid is employed and the Happing motion of the trailing airfoil is implemented by deforming the grid in the near vicinity of the trailing airfoil. The unsteady effect of the flapping motion on the upstream airfoil is investigated by varying the location, the flapping amplitude and frequency of the trailing airfoil. Unsteady flowfields arc presented in term...
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T. Ahmed and D. F. Kurtuluş, “UNSTEADY AERODYNAMICS OF CAMBERED AIRFOILS AT LOW REYNOLDS NUMBER,” presented at the 11th Ankara International Aerospace Conference, Ankara, Türkiye, 2021, Accessed: 00, 2022. [Online]. Available: http://aiac.ae.metu.edu.tr/paper.php?No=AIAC-2021-138.