Bypass transition in a boundary layer flow induced by plasma actuators

Turbulent boundary-layer control with plasma actuators.

This paper reviews turbulent boundary-layer control strategies for skin-friction reduction of aerodynamic bodies. The focus is placed on the drag-reduction mechanisms by two flow control techniques-spanwise oscillation and spanwise travelling wave, which were demonstrated to give up to 45 per cent skin-friction reductions. We show that these techniques can be implemented by dielectric-barrier d...

Some Characteristics of Bypass Transition in a Heated Boundary Layer

Numerical studies of bypass transition in the Blasius boundary layer

Experimental findings show that transition from laminar to turbulent flow may occur also if the exponentially growing perturbations, eigensolutions to the linearised disturbance equations, are damped. An alternative non-modal growth mechanism has been recently identified, also based on the linear approximation. This consists of the transient growth of streamwise elongated disturbances, with reg...

Mhd Boundary Layer Flow Induced by a Permeable Stretching Surface

The self similar steady boundary layer flow induced by a permeable continuous surface stretching with velocity Uw (X) = A. x −1/2 in a quiescent incompressible fluid in the presence of a transverse magnetic field of uniform strength Bo, with suction velocity Vw(x) = − ( υA 4 ) 1/2 . xfw is considered. Numerical solution of the resulting similarity momentum equation using Runge-Kutta-Fehlberg Fo...

Simulation of boundary layer transition induced by periodically passing wakes

By X I A O H U A W U , R O B E R T G. J A C O B S , J U L I A N C. R. H U N T 2 AND P A U L A. D U R B I N 1 Center for Integrated Turbulence Simulations, Flow Physics and Computation Division, Department of Mechanical Engineering, Stanford University, Building 500, Stanford, CA 94305-3030, USA e-mail: [email protected]; [email protected]; [email protected] Department of App...