Results 251 to 260 of about 19,133 (303)
Some of the next articles are maybe not open access.
Hybrid synthetic jets as the nonzero-net-mass-flux synthetic jets
Physics of Fluids, 2006The “hybrid synthetic jet” combines the zero-net-mass-flux synthetic jet and fluidic pumping through a valveless pump. No fluid is supplied from an external source (blower or compressor). Hot-wire experiments on a demonstration model confirm that the hybrid synthetic jet exhibits a higher extrusion volume flow rate than the ordinary synthetic jet.
Zdeněk Trávníček +2 more
openaire +1 more source
Sensors and Actuators A: Physical, 2012
Abstract This paper is a sequel to several recent papers that analysed experimental data on axisymmetric synthetic jets using similarity transformation of governing equations involving a one-equation model of turbulence. Unusual feature there is variation of parameters (“constants”) in transformed equations along the synthetic jet axis. Interestingly,
Václav Tesař, Jozef Kordík
openaire +1 more source
Abstract This paper is a sequel to several recent papers that analysed experimental data on axisymmetric synthetic jets using similarity transformation of governing equations involving a one-equation model of turbulence. Unusual feature there is variation of parameters (“constants”) in transformed equations along the synthetic jet axis. Interestingly,
Václav Tesař, Jozef Kordík
openaire +1 more source
A Jet Formation Criterion for Synthetic Jet Actuators
41st Aerospace Sciences Meeting and Exhibit, 2003This paper proposes and validates a jet formation criterion for synthetic jet actuators. The synthetic jet is a zero net mass flux device, adding additional momentum but no mass to its surroundings. Jet formation is defined as a mean outward velocity along the jet axis and corresponds to the clear formation of shed vortices.
Yogen Utturkar +5 more
openaire +1 more source
A comparison between synthetic jets and continuous jets
Experiments in Fluids, 2003Experimental measurements and flow visualiza- tion of synthetic jets and continuous jets with matched Reynolds numbers are described. Although they have the same profile shape, synthetic jets are wider and slower than matched continuous jets. The synthetic jets are ex- amined at higher Reynolds numbers than previously studied and over a large range of ...
B. L. Smith, G. W. Swift
openaire +1 more source
Directional control of a jet using synthetic jets
AIP Conference Proceedings, 2017The paper presents an application of synthetic jets in the flow control of a jet. The synthetic jet actuator consists of an oscillating membrane operating at high frequency and separating two cavities with exit slots of different geometries. The synthetic jets work as an alternating push-pull system and the generated vortical structure changes the flow
Florin Frunzulica +3 more
openaire +1 more source
On the near field of an axisymmetric synthetic jet
Fluid Dynamics Research, 2007The axisymmetric synthetic jet produced by an oscillating piston has been investigated experimentally. The study was performed in water using digital particle image velocimetry for the instantaneous velocity planar measurements. The near field, up to x/d0 ≈ 6, was investigated for three different Reynolds numbers.
DI CICCA, Gaetano Maria, IUSO, Gaetano
openaire +2 more sources
Modelling of the Characteristics of Synthetic Jet Actuators
35th AIAA Fluid Dynamics Conference and Exhibit, 2005In this paper, a simple static compressible model and a dynamic incompressible model for circular synthetic jet actuators are described. They are used to investigate the effect of changing actuator geometrical and operating parameters on the magnitude of jet peak velocity at the orifice exit.
Tang, H., Zhong, S.
openaire +2 more sources
Two-Dimensional Synthetic Jet Simulation
AIAA Journal, 2000Direct numerical simulation was used to model an array of two-dimensional synthetic slot jets pulsing into initially quiescent e ow. Such zero-net mass-e ux jets can represent an array of microelectromechanical systems. Fluid ejected by the pulsing jets rolls up into vortex pairs that propagate as a result of their mutually induced velocity ...
Conrad Lee, David Goldstein
openaire +1 more source
Plasma Synthetic Jet for Flow Control
40th Fluid Dynamics Conference and Exhibit, 2010The necessity of having an efficient actuator to control flow has driven ONERA to develop a pioneer actuator called Plasma Synthetic Jet (PSJ). This actuator was inspired by the John Hopkins University device. It produces a high exhaust velocity jet using electrical power.
Hardy, Pierrick +5 more
openaire +1 more source
2021
Dual synthetic jets actuator (DSJA) has great potential application in airfoil separation flow control, jet vector control, heat dissipation and other aspects. However, DSJA can make noise of more than 80 dB under the optimal working frequency, which is very unfavorable for the application of DSJA in practical engineering.
Wu Pan +4 more
openaire +1 more source
Dual synthetic jets actuator (DSJA) has great potential application in airfoil separation flow control, jet vector control, heat dissipation and other aspects. However, DSJA can make noise of more than 80 dB under the optimal working frequency, which is very unfavorable for the application of DSJA in practical engineering.
Wu Pan +4 more
openaire +1 more source