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UNSTEADY AERODYNAMICS OF PLUNGING AND STATIONARY SYMMETRIC AIRFOILS AT LOW REYNOLDS NUMBERS
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Date
2023-1-10
Author
Peerzada, Kifa
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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: flow pattern, unsteady vortex shedding and aerodynamic coefficients are observed for the following cases: plunging airfoil and stationary airfoil. The impact of thickness to chord ratio (t/c), angle of attack (α), Reynolds number (Re) and effect of reduced frequency (k) is examined and discussed in detail. Additionally, the flow behavior is also analyzed for NACA 0012 at the same flow parameters for Reynolds numbers (Re) from 10^3 to 10^4. Using the literature data as a reference, a comparison of the obtained results has been performed to ensure that the results are valid.
Subject Keywords
Unsteady aerodynamics
,
micro air vehicles
,
low Reynolds number
,
plunge motion
URI
https://hdl.handle.net/11511/101888
Collections
Graduate School of Natural and Applied Sciences, Thesis
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K. Peerzada, “UNSTEADY AERODYNAMICS OF PLUNGING AND STATIONARY SYMMETRIC AIRFOILS AT LOW REYNOLDS NUMBERS,” M.S. - Master of Science, Middle East Technical University, 2023.
