Flow Control Using Fluidic Actuation

Lecturer: Prof. Ari Glezer, Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, USA
Date: 21 October 2008 (Tuesday), 10:00
Location: Institute of Thermomechanics AS CR, v. v. i., Dolejškova 5, Praha, lecture room A

As you surely know, prof. Ari Glezer is the originator of the term „synthetic jet“ and the founder of this particular branch of fluid mechanics.

Abstract: Flow transport processes in closed and open flow systems including fluid-surface interactions, heat and mass transfer, and mixing and stirring, are controlled by fluidic actuation. Control is effected by small-scale ejection of fluid at the flow boundary using actuator arrays based on synthetic jet technology. A unique feature of this fluidic actuation is that the jets are typically synthesized from the working fluid in the flow system and thus transfer linear momentum without net mass injection across the flow boundary obviating the need for input piping and complex fluidic packaging. In some applications, this approach relies on broad-band, nonlinear amplification of the low-level actuation input within the embedding flow to effect global modifications on scales that are one to two orders of magnitude larger than the characteristic scale of the actuation. Several applications of flow control using this fluidic approach will be presented, including virtual shaping of aerosurfaces for control of lift and drag, fluidic-driven heat transfer, and small-scale mixing.

More information: Prof. Ing. Václav Tesař, CSc., Institute of Thermomechanics AS CR, v. v. i., tesar@it.cas.cz, tel. +420 266 052 270

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