Abstract
A method is reported here for calculating unsteady aerodynamics of hovering and flapping airfoil for two-dimensional flow via the following improved methodologies: (a) a correct formulation of the problem using stream function (ψ) and vorticity (ω) as dependent variables; (b) calculating loads and moment by a new method to solve the governing pressure Poisson equation (PPE) in a truncated part of the computational domain on a nonstaggered grid; (c) accurate solution using high accuracy compact difference scheme for the vorticity transport equation (VTE) and (d) accelerating the computations by using a high-order filter after each time step of integration. These have been used to solve Navier–Stokes equation for flow past flapping and hovering NACA 0014 and 0015 airfoils at typical Reynolds numbers relevant to the study of unsteady aerodynamics of micro air vehicle (MAV) and insect/bird flight.
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Sengupta, T.K., Vikas, V. & Johri, A. An improved method for calculating flow past flapping and hovering airfoils. Theor. Comput. Fluid Dyn. 19, 417–440 (2005). https://doi.org/10.1007/s00162-005-0003-9
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DOI: https://doi.org/10.1007/s00162-005-0003-9