Aerodynamic flow control using synthetic jet technology

1998 ◽  
Author(s):  
Michael Amitay ◽  
Barton Smith ◽  
Ari Glezer
Keyword(s):  
Flow Control ◽  
Synthetic Jet ◽  
Aerodynamic Flow Control

Aerodynamic Flow Control over an Unconventional Airfoil Using Synthetic Jet Actuators

AIAA Journal ◽  
2001 ◽  
Vol 39 (3) ◽  
pp. 361-370 ◽  
Author(s):  
Michael Amitay ◽  
Douglas R. Smith ◽  
Valdis Kibens ◽  
David E. Parekh ◽  
Ari Glezer
Keyword(s):  
Flow Control ◽  
Synthetic Jet ◽  
Synthetic Jet Actuators ◽  
Jet Actuators ◽  
Aerodynamic Flow Control

Aerodynamic flow control over an unconventional airfoil using synthetic jet actuators

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 361-370 ◽  
Author(s):  
Michael Amitay ◽  
David E. Parekh ◽  
Douglas R. Smith ◽  
Valdis Kibens ◽  
Ari Glezer
Keyword(s):  
Flow Control ◽  
Synthetic Jet ◽  
Synthetic Jet Actuators ◽  
Jet Actuators ◽  
Aerodynamic Flow Control

scholarly journals Some aspects of aerodynamic flow control using synthetic-jet actuation

2011 ◽  
Vol 369 (1940) ◽  
pp. 1476-1494 ◽  
Author(s):  
Ari Glezer
Keyword(s):  
Flow Control ◽  
Spatial Scales ◽  
Active Flow Control ◽  
Cross Flow ◽  
Synthetic Jet ◽  
Base Flow ◽  
Bluff Bodies ◽  
Actuation Frequency ◽  
Zero Net Mass Flux ◽  
Aerodynamic Flow Control

Aerodynamic flow control effected by interactions of surface-mounted synthetic (zero net mass flux) jet actuators with a local cross flow is reviewed. These jets are formed by the advection and interactions of trains of discrete vortical structures that are formed entirely from the fluid of the embedding flow system, and thus transfer momentum to the cross flow without net mass injection across the flow boundary. Traditional approaches to active flow control have focused, to a large extent, on control of separation on stalled aerofoils by means of quasi-steady actuation within two distinct regimes that are characterized by the actuation time scales. When the characteristic actuation period is commensurate with the time scale of the inherent instabilities of the base flow, the jets can effect significant quasi-steady global modifications on spatial scales that are one to two orders of magnitude larger than the scale of the jets. However, when the actuation frequency is sufficiently high to be decoupled from global instabilities of the base flow, changes in the aerodynamic forces are attained by leveraging the generation and regulation of ‘trapped’ vorticity concentrations near the surface to alter its aerodynamic shape. Some examples of the utility of this approach for aerodynamic flow control of separated flows on bluff bodies and fully attached flows on lifting surfaces are also discussed.

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