A full Navier-Stokes solver has been used t o model transonic flow over three airfoil sections. The method uses a two-dimensional, implicit, conservative finite difference scheme for solving the compressible Navier-Stokes equations. Results are presented as prescribed for the Viscous Transonic Airfoil Workshop to held at the AIAA 25th Aerospace Sciences Meeting. "Jones" airfoils have been inves...

L OW-REYNOLDS-NUMBER airfoil aerodynamics is important for bothmilitary and civilian applications. The applications include propellers, sailplanes, ultralight man-carrying/man-powered aircraft, high-altitude vehicles, wind turbines, unmanned aerial vehicles (UAVs), and micro air vehicles (MAVs). For the applications just listed, the combination of small length scale and low flight velocities re...

The simplest aerodynamic model of horizontal-axis wind turbines is the blade element momentum theory, which assumes that blades behave as airfoils, but a correct two-dimensional representation an infinite cascade lifting bodies. This study analyzes conventional and impulse forms forces on cascades airfoils at spacings pitch angles typical turbine applications. OpenFOAM software was used to simu...

A two-dimensional nonlinear aerodynamics representation analysis is proposed for the investigation of inviscid flowfields of unsteady airfoils. Such problems are reduced to the solution of a nonlinear multidimensional singular integral equation as the source and vortex strength distributions are dependent on the history of these distributions on the NACA airfoil surface. A turbulent boundary la...

The wind is an energy source that has the properties of a clean, free, and readily available source. However, efficiency existing rotors used to harness power still not satisfactory. Thus, in this current study, development aerodynamic performance investigation ten NACA airfoils comprising five symmetrical non-symmetrical have been analyzed through computational fluids dynamic (CFD) simulation ...

In these lectures I shall attempt to survey some of the principal recent developments in computational aerodynamics. Prior to 1960 computational methods were hardly used in aerodynamic analysis, although they were already widely used for structural analysis. The NACA 6 series of airfoils had been developed during the forties, using hand computation to perform the Theodorsen method for conformal...

In this study, the effect of different blade shapes on aerodynamic performance NACA series airfoils under a wide variety working conditions at Reynolds number Re = 700,000 was explored. The SST k-ω turbulence model used for CFD method to investigate leading edge erosion airfoils. results indicated that an optimal thickness range exists considering erosion. If airfoil too thin or thick, increase...