Numerical Study and Experimental Validation of the Interaction of Multiple Synthetic Jet Actuators with Cross Flow

2012 ◽  
Author(s):  
Zohaib Hasnain ◽  
Alison Flatau ◽  
James Hubbard Jr. ◽  
Rahul Mulinti
Keyword(s):  
Experimental Validation ◽  
Numerical Study ◽  
Cross Flow ◽  
Synthetic Jet ◽  
Synthetic Jet Actuators ◽  
Jet Actuators

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.

Reduced Order Nonlinear Navier Stokes Models for Synthetic Jets

1999 ◽  
Author(s):  
Othon K. Rediniotis ◽  
Andrew J. Kurdila
Keyword(s):  
Numerical Study ◽  
Control Strategies ◽  
Order Reduction ◽  
Synthetic Jet ◽  
Reduced Order Models ◽  
Loop Control ◽  
Reduced Order ◽  
Synthetic Jet Actuators ◽  
Jet Actuators ◽  
Reduction Methods

Abstract While the potential for the use of synthetic jet actuators to achieve flow control has been noted fro some tme, most studies of these devices have been empirical or experimental in nature. Several technical issues must be resolved to achieve rigorous, model-based, closed loop control methodologies for this class of actuator. The goal of this paper is consequently two-fold. First, we seek to derive and evaluate model order reduction methods based on proper orthogonal decomposition that are suitable for synthetic jet actuators. Secondly, we seek to derive rigorously stable feedback control laws for the derived reduced order models. The readability of the control strategies is discussed, and a numerical study of the effectiveness of the reduced order models are summarized.

Reduced Order Nonlinear Navier-Stokes Models for Synthetic Jets

2002 ◽  
Vol 124 (2) ◽  
pp. 433-443 ◽  
Author(s):  
Othon K. Rediniotis ◽  
Jeonghwan Ko ◽  
Andrew J. Kurdila
Keyword(s):  
Flow Control ◽  
Numerical Study ◽  
Control Strategies ◽  
Order Reduction ◽  
Synthetic Jet ◽  
Reduced Order Models ◽  
Loop Control ◽  
Reduced Order ◽  
Synthetic Jet Actuators ◽  
Jet Actuators

While the potential for the use of synthetic jet actuators to achieve flow control has been noted for some time, most of such flow control studies have been empirical or experimental in nature. Several technical issues must be resolved to achieve rigorous, model-based, closed-loop control methodologies for this class of actuators. The goal of this paper is consequently two-fold. First, we seek to derive and evaluate model order reduction methods based on proper orthogonal decomposition that are suitable for synthetic jet actuators. Second, we seek to derive rigorously stable feedback control laws for the derived reduced order models. The realizability of the control strategies is discussed, and a numerical study of the effectiveness of the reduced order models for two-dimensional flow near the jet exit is summarized.

Modeling and Experimental Validation of the Frequency Response of Synthetic Jet Actuators

AIAA Journal ◽  
2014 ◽  
Vol 52 (8) ◽  
pp. 1733-1748 ◽  
Author(s):  
Luigi de Luca ◽  
Michele Girfoglio ◽  
Gennaro Coppola
Keyword(s):  
Frequency Response ◽  
Experimental Validation ◽  
Synthetic Jet ◽  
Synthetic Jet Actuators ◽  
Jet Actuators

Towards the Design of Synthetic-jet Actuators for Full-scale Flight Conditions

2007 ◽  
Vol 78 (3-4) ◽  
pp. 283-307 ◽  
Author(s):  
Shan Zhong ◽  
Mark Jabbal ◽  
Hui Tang ◽  
Luis Garcillan ◽  
Fushui Guo ◽  
...  
Keyword(s):  
Synthetic Jet ◽  
Full Scale ◽  
Synthetic Jet Actuators ◽  
Jet Actuators
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