Numerical investigations on dynamic stall of low Reynolds number flow around oscillating airfoils
This paper presents a 2D computational investigation on the dynamic stall phenomenon associated with unsteady flow around the NACA0012 airfoil at low Reynolds number (Re(c) approximate to 10(5)). Two sets of oscillating patterns with different frequencies, mean oscillating angles and amplitudes are numerically simulated using Computational Fluid Dynamics (CFD), and the results obtained are validated against the corresponding published experimental data. It is concluded that the CFD prediction captures well the vortex-shedding predominated flow structure which is experimentally obtained and the results quantitatively agree well with the experimental data, except when the blade is at a very high angle of attack. (C) 2010 Elsevier Ltd. All rights reserved.
dynamic stall low reynolds number oscillating blade aerodynamics sst k - omega turbulence model vawt