Název: Analysis of non-harmonic excitation of synthetic jet actuators
Autoři: Kordík, Jozef ; Trávníček, Zdeněk
Typ dokumentu: Příspěvky z konference
Konference/Akce: Symposium on anemometry /31./, Holany-Litice (CZ), 20170530
Rok: 2017
Jazyk: eng
Abstrakt: 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.
Klíčová slova: momentum flux; synthetic jet; synthetic jet actuator
Číslo projektu: GA16-16596S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: 31st SYMPOSIUM ON ANEMOMETRY PROCEEDINGS, ISBN 978-80-87117-16-3

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0273587

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-363527


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference