TY - JOUR
T1 - An Overview of Synthetic Jet Under Different Clamping and Amplitude Modulation Techniques
AU - Azzawi, Itimad, D. J.
AU - Jaworski, Artur J.
AU - Mao, Xiaoan
N1 - Funding Information:
The first author, Itimad Azzawi, would like to express his gratitude to Iraqi organizations (HCED and University of Diyala) for their financial support during the Ph.D. study. The authors would also like to thank the technicians at University of Leeds for their support.
Publisher Copyright:
© 2019 EDP Sciences. All rights reserved.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - There is generally limited guidance available on the optimum clamping method for the diaphragms used in the synthetic jet actuators (SJAs). This paper describes the effects of clamping methods (O-rings, neoprene rubber washers and metal-to-metal clamping) on the actuator diaphragm displacement using Polytec scan vibrometer (PSV). Once the clamping type was implemented, an optimization study to examine the effect of geometrical parameters for three designs of synthetic jet actuators in quiescent conditions-in particular the number of orifices per cavity, the space between them, and their effects on the jet velocity-was performed. It has also been shown that with use the Helmholtz resonance of the cavity and amplitude modulation of the excitation signal, the actuator can exhibit a more significant "blowing" velocity at a reduced power input.
AB - There is generally limited guidance available on the optimum clamping method for the diaphragms used in the synthetic jet actuators (SJAs). This paper describes the effects of clamping methods (O-rings, neoprene rubber washers and metal-to-metal clamping) on the actuator diaphragm displacement using Polytec scan vibrometer (PSV). Once the clamping type was implemented, an optimization study to examine the effect of geometrical parameters for three designs of synthetic jet actuators in quiescent conditions-in particular the number of orifices per cavity, the space between them, and their effects on the jet velocity-was performed. It has also been shown that with use the Helmholtz resonance of the cavity and amplitude modulation of the excitation signal, the actuator can exhibit a more significant "blowing" velocity at a reduced power input.
KW - Synthetic jet actuators
KW - Piezocermic devices
KW - Polytec Scan Vibrometer
KW - Helmholtz frequency
KW - Modulated and un-modulated signals
KW - Mechanical Engineering
UR - https://huddersfield.box.com/s/umr4rruu3ayxnwpm5era430jpfb2qyi4
UR - http://www.scopus.com/inward/record.url?scp=85103342564&partnerID=8YFLogxK
U2 - 10.1115/1.4048930
DO - 10.1115/1.4048930
M3 - Article
VL - 143
JO - Journal of Fluids Engineering
JF - Journal of Fluids Engineering
SN - 0098-2202
IS - 3
M1 - 031501-1
ER -
