Non-harmonic excitation of synthetic jet actuators based on electrodynamic transducers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00492687" target="_blank" >RIV/61388998:_____/18:00492687 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijheatfluidflow.2018.07.003" target="_blank" >http://dx.doi.org/10.1016/j.ijheatfluidflow.2018.07.003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijheatfluidflow.2018.07.003" target="_blank" >10.1016/j.ijheatfluidflow.2018.07.003</a>
Alternative languages
Result language
angličtina
Original language name
Non-harmonic excitation of synthetic jet actuators based on electrodynamic transducers
Original language description
An 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. With the duty cycle and frequency of the excitation voltage varied at a constant electrical input power level and fixed nozzle diameter, the momentum flux of the jet (the jet thrust) was measured using precision scales. The maximum of the measured momentum flux was found at the optimum driving frequency and the duty cycle. This experiment was repeated for several input power levels and nozzle diameters, and the resultant optimal driving configurations were compared with adequate results for a harmonically driven actuator with identical geometry. Based on a newly introduced dimensionless nozzle diameter, a criterion was found that states conditions under which it is advantageous to use the suggested non-harmonic excitation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/GA16-16596S" target="_blank" >GA16-16596S: Optimization of pulsatile jet actuation in fluid mechanics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Heat and Fluid Flow
ISSN
0142-727X
e-ISSN
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Volume of the periodical
73
Issue of the periodical within the volume
October
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
154-162
UT code for WoS article
000452345000013
EID of the result in the Scopus database
2-s2.0-85051661501