The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON FLUID MECHANICS
Transactions ID Number: 89-380
Full Name: Pietro Zunino
Position: Professor
Age: ON
Sex: Male
Address: Via Montallegro 1, I-16145, Genova
Country: ITALY
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E-mail address: pietro.zunino@unige.it
Other E-mails: francesca.satta@unige.it
Title of the Paper: synthetic jet design criteria and application for boundary layer separation control
Authors as they appear in the Paper: Francesca Satta, Daniele Simoni, Marina Ubaldi, Pietro Zunino, Francesco Bertini
Email addresses of all the authors: francesca.satta@unige.it,daniele.simoni@unige.it,marina.ubaldi@unige.it,pietro.zunino@unige.it,francesco.bertini@aviogroup.com
Number of paper pages: 10
Abstract: With the purposes of better understanding the phenomena associated with the synthetic jet operation as well as identifying suitable design criteria to control boundary layer laminar separation, the aerodynamic performance of a synthetic jet system has been experimentally investigated. Both device design and its aerodynamic characterization are addressed in the paper, paying particular attention to the fundamental parameters to be set for the synthetic jet design. The synthetic jet behaviour has been surveyed adopting different measuring techniques. Power density spectra have been evaluated from jet velocity distributions measured by means of a hot-wire anemometer. In order to investigate the instantaneous flow field and to allow the identification of the jet organised flow structures, Particle Image Velocimetry has been adopted. Moreover, to distinguish the different jet dynamics during the peculiar phases of the device (blowing and suction), phase-locked ensemble !
averaging technique has been applied. The system has been successively tested with external cross-flow and the jet performance has been surveyed. In particular, the device has been applied on a flat plate installed in a double contoured walls test section in order to verify the capability of the jet in suppressing the boundary layer laminar separation induced by strong adverse pressure gradients, typical of Ultra-High-Lift turbine pressure distributions.
Keywords: Boundary layer control, Synthetic jet, Blowing ratio, Strouhal number, Particle Image Velocimetry, Hot-wire anemometry
EXTENSION of the file: .pdf
Special (Invited) Session: Design and aerodynamic characterization of a synthetic jet for boundary layer control
Organizer of the Session: 697-306
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