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Visualization study of hybrid synthetic jets
Journal of Visualization, 2014A synthetic jet (SJ) is a fluid flow that is created from an oscillatory process of suction and blowing. A hybrid synthetic jet (HSJ) combines this principle with fluidic pumping through a valveless pump. The present study addresses round HSJs issuing into quiescent surroundings from an actuator orifice 8 mm in diameter.
Zuzana Broucková, Zdenek Trávnícek
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Measurements of Synthetic Jets in a Boundary Layer
2008PIV measurements along the centerline of a synthetic jet embedded in a flat plate boundary layer were conducted for three types of jet vortex structures identified by the authors in previous flow visualization studies, namely hairpin vortices, stretched vortex rings and tilted vortex rings. The primary purpose of this work was to quantify the near wall
Jabbal, M, Zhong, Shan
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Characterization of Synthetic Jet Resonant Cavities
2014The acoustic properties of piezo-electric driven resonant cavities usually employed to generate the so-called synthetic jets are analytically and numerically investigated in order to characterize the performances of such devices. It is shown that the actuator behaves as a two-coupled oscillators system and the dimensionless form of the governing ...
DE LUCA, LUIGI +3 more
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Synthetic jets with piezoelectric diaphragms
SPIE Proceedings, 2005Piezoelectric diaphragms are used as synthetic jets because of their size, rapid time response, and relatively low power consumption. Among the piezoelectric diaphragms used are unimorphs and Bimorphs. In this study, a bimorph diaphragm, a thin Unimorph pre-stressed device and a Radial Field Diaphragm (RFD) are compared.
Poorna Mane, Karla Mossi, Robert Bryant
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Velocity measurements in a synthetic jet
39th Aerospace Sciences Meeting and Exhibit, 2001Detailed measurements of the velocity field in a synthetic jet emanating from a piezoelectric actuator are conducted. A two-dimensional, steady, turbulent jet is synthesized from the ambient air by periodically deflecting a piezoelectric-driven disk, enclosed in a cavity.
Yair Guy +2 more
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Modified flapping jet for increased jet spreading using synthetic jets
International Journal of Heat and Fluid Flow, 2011Abstract The present paper is an experimental investigation, using a PIV system, on modified rectangular jet flow co-flowing with a pair of synthetic jets placed symmetrically with respect to the geometric centerline of the main flow. The objective was to determine the optimal forcing conditions that would result in jet spreading beyond what would be
Maher Ben Chiekh +2 more
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Vectoring of Adjacent Synthetic Jets
AIAA Journal, 2005The formation, evolution, and interactions of a closely spaced pair of coflowing rectangular synthetic jets are investigated using particle image velocimetry. The dynamics of the combined jet is determined by the interactions of the counter-rotating vortex pairs that form each jet.
Barton L. Smith, Ari Glezer
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Axisymmetric coaxial synthetic jets
40th AIAA Aerospace Sciences Meeting & Exhibit, 2002Measurements were made in the near field of piston driven axisymmetric coaxial synthetic jets emanating from an orifice and a surrounding annulus of equal exit areas and cavity volumes. Piston velocity, amplitude, radial spacing between the orifice and the annulus, and exit angles had a strong influence on the dominant features of the flow.
Z. Bangash, A. Ahmed
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2014
The production of a novel micropump based on the synthetic jet principle is investigated both numerically and experimentally. The proposed micropump consists of a synthetic jet actuator driven by a vibrating diaphragm issuing into an inverted T- shaped channel structure forming the inlet/outlet channels of the pump.
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The production of a novel micropump based on the synthetic jet principle is investigated both numerically and experimentally. The proposed micropump consists of a synthetic jet actuator driven by a vibrating diaphragm issuing into an inverted T- shaped channel structure forming the inlet/outlet channels of the pump.
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