Compact, high-power synthetic jet actuators for flow separation control

2001 ◽  
Author(s):  
J. Gilarranz ◽  
O. Rediniotis
Keyword(s):  
Flow Separation ◽  
High Power ◽  
Synthetic Jet ◽  
Separation Control ◽  
Flow Separation Control ◽  
Synthetic Jet Actuators ◽  
Jet Actuators

A New Class of Synthetic Jet Actuators—Part I: Design, Fabrication and Bench Top Characterization

2005 ◽  
Vol 127 (2) ◽  
pp. 367-376 ◽  
Author(s):  
J. L. Gilarranz ◽  
L. W. Traub ◽  
O. K. Rediniotis
Keyword(s):  
Flow Separation ◽  
Synthetic Jet ◽  
Synthetic Jets ◽  
Flow Separation Control ◽  
Synthetic Jet Actuators ◽  
New Class ◽  
Momentum Coefficient ◽  
Jet Actuators ◽  
In Series ◽  
Exit Slot

Although the potential of synthetic jets as flow separation control actuators has been demonstrated in the existing literature, there is a large gap between the synthetic jet actuators (SJA) used in laboratory demonstrations and the SJAs needed in realistic, full-scale applications, in terms of compactness, weight, efficiency, control authority and power density. In most cases, the SJAs used in demonstrations are either too large or too weak for realistic applications. In this work, we present the development of a new class of high-power synthetic jet actuators for realistic flow control applications. The operating principle of the actuator is the same as that of crankshaft driven piston engines, which makes a significant part of the technology necessary for the actuator development available off-the-shelf. The design of the actuator is modular and scalable. Several “building block” units can be stacked in series to create the actuator of the desired size. Moreover, active exit slot reconfiguration, in the form of variable exit slot width, decouples the actuator frequency from the actuator jet momentum coefficient and allows the user to set the two independently (within limits). Part I of this paper presents the design, fabrication and bench top characterization of the actuator. Several versions of the actuator were designed, built and tested, leading up to the development of a six-piston compact actuator that has a maximum power consumption of 1200 W (1.6 hp) and can produce (for the tested conditions) peak exit velocities as high as 124 m/s. In Part II, the actuator was housed in the interior of a NACA0015 profiled wing with a chord of 0.375 m (14.75 inches). The assembly’s performance in controlling flow separation was studied in the wind tunnel.

scholarly journals Flow Separation Control on a Full-Scale Vertical Tail Model using Sweeping Jet Actuators

2015 ◽  
Author(s):  
Marlyn Y. Andino ◽  
John C. Lin ◽  
Anthony E. Washburn ◽  
Edward A. Whalen ◽  
Emilio C. Graff ◽  
...  
Keyword(s):  
Flow Separation ◽  
Full Scale ◽  
Separation Control ◽  
Flow Separation Control ◽  
Jet Actuators

Flow separation control via synthetic jet actuation

2000 ◽  
Author(s):  
P. Rao ◽  
J. Gilarranz ◽  
J. Ko ◽  
T. Strganac ◽  
O. Rediniotis
Keyword(s):  
Flow Separation ◽  
Synthetic Jet ◽  
Separation Control ◽  
Flow Separation Control
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