Original title: Analysis of non-harmonic excitation of synthetic jet actuators
Authors: Kordík, Jozef ; Trávníček, Zdeněk
Document type: Papers
Conference/Event: Symposium on anemometry /31./, Holany-Litice (CZ), 20170530
Year: 2017
Language: eng
Abstract: Axisymmetric synthetic jet actuator based on a loudspeaker was tested experimentally. The actuator was driven by a voltage waveform, whose shape was derived from a pulse-width modulated signal. While the duty cycle and frequency of the excitation signal were varied the outlet velocities were measured by a hot-wire probe. Integral quantities such as characteristic velocity, momentum flux, and kinetic energy flux were evaluated from the outlet velocities. Their maxima were located as functions of frequency and the duty cycle. The found maximal values were compared with results obtained for harmonic excitation. The highest improvement (about 18%) was achieved for kinetic energy flux.
Keywords: momentum flux; synthetic jet; synthetic jet actuator
Project no.: GA16-16596S (CEP)
Funding provider: GA ČR
Host item entry: 31st SYMPOSIUM ON ANEMOMETRY PROCEEDINGS, ISBN 978-80-87117-16-3

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/11104/0273587

Permalink: http://www.nusl.cz/ntk/nusl-363527


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