An innovative step change is required to improve or replace the current mechanically deployed leading edge high lift systems for civil transport aircraft. This paper provides a review of existing leading edge device technologies for high lift and possible future technologies based on flow control. There is an emphasis on those flow control technologies that will be sufficiently mature enough fo...

The present study provides a detailed description of the forces on an ellipsoidal particle in vicinity rough wall. Three-dimensional numerical simulations are performed using body-fitted mesh to estimate drag, lift, and torque coefficients. A large number conducted over range parameters, such as shear Reynolds ([Formula: see text]), orientation angle wall-particle separation distance get compre...

In this paper, numerical simulation for a two-dimensional viscous and incompressible flow past the elliptical airfoil is presented by Random Vortex Blob (RVB). RVB is a numerical technique to solve the incompressible, two-dimensional and unsteady Navier-Stocks equations by converting them to rotational non-primitive formulations. In this method, the velocity vector at a certain point can be cal...

To improve the low aerodynamic efficiency and reduce high energy consumption of a single-stage circulation control wing, multistage wing was designed. By combining force measurement particle image velocimetry (PIV), flow-field characteristics an aerofoil were investigated with respect to increase in number blowing slots, changes coefficient, different ratios for three slots. The results reveale...

Miniflaps at the trailing edge of airfoils (i.e., Gurney flaps) change the Kutta condition and thus produce higher lift. Unfortunately, however, the drag also increases due to the flow separation downstream of such modified trailing edges. The present work describes investigations aimed at the stabilization of the wake flow in order to achieve drag reduction and a decrease of sound generation. ...