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Simulation of dynamic stall for a NACA 0012 airfoil using a vortex method

Author:
Akbari, MH  Price, SJ  


Journal:
JOURNAL OF FLUIDS AND STRUCTURES


Issue Date:
2003


Abstract(summary):

The unsteady, incompressible, viscous laminar flow over a NACA 0012 airfoil is simulated, and the effects of several parameters investigated. A vortex method is used to solve the two-dimensional Navier-Stokes equations in the vorticity/stream-function form. By applying an operator-splitting method, the "convection" and "diffusion" equations are solved sequentially at each time step. The convection equation is solved using the vortex-in-cell method, and the diffusion equation using a second-order ADI finite difference scheme. The airfoil profile is obtained by mapping a circle in the computational domain into the physical domain through a Joukowski transformation. The effects of several parameters are investigated, such as the reduced frequency, mean angle of attack, location of pitch axis, and the Reynolds number. It is observed that the reduced frequency has the most influence on the flow field. (C) 2003 Elsevier Science Ltd. All rights reserved.


Page:
855---874


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