Aerodynamic Flow Control and Its Applications
Speaker: Miki Amitay, Rensselaer Polytechnic Institute
Department: Mechanical & Aerospace Engineering
Location: Engineering Quadrangle D221
Date/Time: Friday, May 10, 2013, 3:30 p.m. - 4:30 p.m.
The ability to manipulate a flow field to affect a desired change is of immense practical importance. As a scientific discipline and as technological curiosity, flow control is perhaps more hotly pursued by scientists and engineers than any other area in fluid mechanics and aerodynamics. Flow control involves passive and active devices to affect a beneficial change in wall-bounded or free-shear flows. Whether the task is to delay/advance transition, to suppress/enhance turbulence or prevent/provoke separation, useful end results include enhanced performance, drag reduction, lift enhancement, mixing augmentation, flow-induced noise suppression, and many more. The presentation will be divided into two major parts: (1) Current and future activities in the Center for Flow Physics and Control at RPI. (2) A discussion of several active flow control techniques, including synthetic (zero-net-mass-flux) jets, and Electro Active Polymers (EAPs), and a demonstration of these techniques on various systems. A few examples will be presented, including finite wings, augmentation of conventional control surfaces for improved air vehicle maneuverability, and vibration and separation control on wind turbine blades.