Development of synthetic jet actuators for active flow control at NASA Langley

2000 ◽  
Author(s):  
Fang-Jenq Chen ◽  
Chungsheng Yao ◽  
George Beeler ◽  
Robert Bryant ◽  
Robert Fox
Keyword(s):  
Flow Control ◽  
Active Flow Control ◽  
Synthetic Jet ◽  
Synthetic Jet Actuators ◽  
Jet Actuators ◽  
Active Flow

The Effect of Orifice Angle and Cavity Dimension on Rectangular Synthetic Jet Actuators

2011 ◽  
Author(s):  
Pooya Kabiri ◽  
Douglas G. Bohl ◽  
Goodarz Ahmadi
Keyword(s):  
Particle Image ◽  
Vortical Structure ◽  
Active Flow Control ◽  
Cross Flow ◽  
Synthetic Jet ◽  
Synthetic Jet Actuators ◽  
Image Velocimetry ◽  
Jet Actuators ◽  
Active Flow ◽  
Analytic Prediction

In the last decade, a great deal of interest has been focused on the application of synthetic jet actuators (SJA) for active flow control. SJAs delay separation by injecting vortex pairs into the cross flow and energizing the turbulent boundary layer. The goal of this study was to investigate the effects of the orifice angle on the performance of axisymmetric SJAs. The SJAs used in this experiment were composed of a piezoelectric (PZT) membrane, cavities and orifices. SJA’s with either a straight (90°) or angled (60°) orifices were characterized using hot-wire anemometry and Particle Image Velocimetry (PIV). It was found that the structure of the jet flow changed depending on the angle of the orifice with differences in the resulting vortical structure observed. The peak jet speed was found to be higher for the straight orifice than for the angled orifice contradicting the analytic prediction based on cavity dimension.

10703 Study on condition of synthetic jet actuators for flow control around pantograph panhead using CFD analysis

2013 ◽  
Vol 2013.19 (0) ◽  
pp. 99-100
Author(s):  
Yasushi TAKANO ◽  
Takafumi OZAWA ◽  
Takeshi Mitsumodi ◽  
Yuichi SATO ◽  
Mitsuru IKEDA ◽  
...  
Keyword(s):  
Flow Control ◽  
Synthetic Jet ◽  
Cfd Analysis ◽  
Synthetic Jet Actuators ◽  
Jet Actuators

A piezoelectrically actuated micro synthetic jet for active flow control

2003 ◽  
Vol 108 (1-3) ◽  
pp. 168-174 ◽  
Author(s):  
Chester Lee ◽  
Guang Hong ◽  
Q.P. Ha ◽  
S.G. Mallinson
Keyword(s):  
Flow Control ◽  
Active Flow Control ◽  
Synthetic Jet ◽  
Active Flow

scholarly journals Numerical Analysis of a Bidirectional Synthetic Jet for Active Flow Control

AIAA Journal ◽  
2017 ◽  
Vol 55 (3) ◽  
pp. 1064-1069 ◽  
Author(s):  
Rodrigo Fisher ◽  
Takafumi Nishino ◽  
Mark Savill
Keyword(s):  
Numerical Analysis ◽  
Flow Control ◽  
Active Flow Control ◽  
Synthetic Jet ◽  
Active Flow

scholarly journals Investigation into clustering of synthetic jet actuators for flow separation control applications

2005 ◽  
Vol 109 (1091) ◽  
pp. 35-44 ◽  
Author(s):  
S. C. Liddle ◽  
N. J. Wood
Keyword(s):  
Boundary Layer ◽  
Flow Control ◽  
Input Signal ◽  
Streamwise Velocity ◽  
Synthetic Jet ◽  
Small Scale ◽  
Signal Phase ◽  
Control Applications ◽  
Synthetic Jet Actuators ◽  
Jet Actuators

Abstract An investigation into the behaviour of clustered synthetic jet Actuators for flow-control applications is described. Experiments have been undertaken with two small-scale synthetic jet actuators in a zero-pressure gradient boundary-layer, in order to investigate the effect of configuration yaw angle and relative input signal phase. Oil-flow visualisation and hotwire anemometry techniques were used, demonstrating that changes in the downstream flow structure could be observed. Compared to a streamwise configuration, in which a symmetrical counter-rotating vortex pair was produced by the synthetic jet-boundary-layer interaction, a broader asymmetric interaction was produced in a 15° yaw configuration. Streamwise velocity contour plots, illustrating the development of the interaction downstream, over four phase angles, were presented. Significant differences in the PSD analyses of downstream streamwise velocity time histories were found, suggesting that input signal phase could influence the stability and hence effectiveness of flow structures used in flow-control applications.

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