Abstract. A gradient based method is presented for optimization of an airfoil configuration. The flow is governed by two dimensional, compressible Euler equations. A finite volume code based on unstructured grid is developed to solve the equations. The procedure is carried out for optimizing an airfoil with initial configuration of NACA 0012. The advantage of this technique over the other gradi...

The rotor is one of the vital components a wind turbine. In design rotor, expected result most optimal power. This purpose study to optimization Horizontal Axis Wind Turbine power various parameters such as airfoil, angle attack, and pitch angle. Airfoils (NACA 4412-2412 T.E. mod, NACA 2412-4412 L.E. mod), attack (0, 2, 4, 6), 1, 3) are parameter variations used. simulation method uses BEM (Bla...

This experimental study investigates the effect of biologically inspired finlets on reduction trailing-edge noise a NACA 0012 airfoil. At chord-based Reynolds number 400,000, far...

Open-loop active flow control is used to modify the spanwise distribution of circulation around an NACA 0012 and flat plate wing. The leading edge on both airfoils and tip regions of the NACA airfoil contain spatially localized actuators that can be independently controlled in terms of amplitude and frequency, allowing the spanwise distribution of circulation to be modified. Different orientati...

A grid generation and ow solution algorithm for the Euler equations on unstructured grids is presented. The grid generation scheme, which utilizes Delaunay triangulation, generates the eld points for the mesh based on cell aspect ratios and allows clustering of grid points near solid surfaces. The ow solution method is an implicit algorithm in which the linear set of equations arising at each t...

This paper describes the application of the noncommercial CFD-code FLOWer to the problem of a sinusoidally pitching NACA 0012 airfoil with high amplitude and reduced frequency under incompressible flow conditions. As FLOWer allows the approximate solution of the nonlinear conservation laws governing viscous fluid flow, i. e. the Navier-Stokes equations, a numerical investigation of the unsteady...

The inotropic effects of ACh and adenosine on ferret ventricular cells were investigated with the action potential-clamp technique. Under current clamp, both agonists resulted in action potential shortening and a decrease in contraction. Under action potential clamp, both agonists failed to decrease contraction substantially. In the absence of agonist, application of the short action potential ...