Numerous studies have been conducted to investigate effect of blade geometry vertical axis wind turbine performance. Most the evaluations focused on airfoil series and parameters such as thickness camber airfoil. Few examined other In present study, geometric change in leading-edge radius (LER) a performance has numerically studied. Hence, modified NACA 0021 profiles were created using method (...

Recent investigations on the aerodynamics of natural fliers have illuminated the significance of the Leading-Edge Vortex (LEV) for lift generation in a variety of flight conditions. A well documented example of an LEV is that generated by aircraft with highly swept, delta shaped wings. While the wing aerodynamics of a manoeuvring aircraft, a bird gliding and a bird in flapping flight vary signi...

When the Wright brothers set out to invent a flying machine at the end of the nineteenth century, they knew they were facing quite a challenge. Not only was it a daunting task to accomplish powered flight but also to overcome the ideology, morality and sensibility of their time, when most people believed that human flight was neither possible nor natural. Science fiction author Arthur C. Clarke...

A multigrid solver is defined as having textbook multigrid efficiency (TME) if the solutions to the governing system of equations are attained in a computational work which is a small (less than 10) multiple of the operation count in evaluating the discrete residuals. TME in solving the incompressible inviscid fluid equations is demonstrated for leadingedge stagnation flows. The contributions o...

This report offers a vision for China that reaches beyond the current models and drivers of outsourcing. This vision moves from the concept of outsourcing to one of strategic sourcing, thus paving the way to successfully competing in an industry where R&D will increasingly be performed by global companies that create nimble, virtual operating groups comprised of the best-in-class talent require...