Original title: Control of flow separation by vestigial "synthetic jet"
Authors: Tesař, Václav ; Pavelka, Miroslav ; Smyk, E. ; Peszyński, K.
Document type: Papers
Conference/Event: Colloquium FLUID DYNAMICS 2014, Praha (CZ), 2014-10-22 / 2014-10-24
Year: 2014
Language: eng
Abstract: A useful aerodynamic control action may be causing a separation of flow from the wall past which the fluid flows. Several current research activities aim at doing so by oscillating zero-time-mean flow generated in a nozzle located in the wall. The effect is often described as “flow control by synthetic jet”, although it is obvious that the vortex rings generated in the outflow phase of the oscillation are deformed by the controlled flow and also are carried too far away so that they cannot form the classical synthetic jet configuration of vortex rings. Authors describe experiments with such a control applied successfully in an axisymmetric fluidic valve. Presented is a hypothesis explaining the separation mechanism.
Keywords: fluidics; separation control; synthetic jet
Project no.: GA13-23046S (CEP)
Funding provider: GA ČR
Host item entry: Colloquium FLUID DYNAMICS 2014 , ISBN 978-80-87012-53-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0239244

Permalink: http://www.nusl.cz/ntk/nusl-177630


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers