Development of an aerodynamic synthetic jet actuator based on a piezoceramic buckled beam
by Clingman, Dan J., M.S., UNIVERSITY OF MARYLAND, COLLEGE PARK, 2006, 122 pages; 1439154

Abstract:

This thesis documents the development of a synthetic jet actuator powered by an Enhanced Displacement (ED) motor based on piezoceramic bimorph beam operating in a post-buckled state. The motor is modeled using Lagrange's equations to capture the post-buckling beam dynamics and the dynamics of supporting elements of the motor. The fluid section of the actuator, including the air pressure and velocity within chamber, is modeled by a three-state adiabatic flow model. The motor and fluid models are coupled together to form a complete synthetic jet actuator model.

An ED motor was fabricated and tested and shows that it produces eight times the energy compared to the same bimorph operated without a buckling load. Motor and model data agree well for both static and dynamic operation.

The ED motor was installed in a synthetic jet actuator and demonstrated the ability to produce flows in excess of 15 m/sec with duty cycles varying between 2 Hz and 30 Hz. For these tests the drive signal used was a square wave and jet velocity was only mildly dependent of actuation frequency.
 
AdviserAlison Flatau
SchoolUNIVERSITY OF MARYLAND, COLLEGE PARK
SourceMAI/ 45-02, p. , Feb 2007
Source TypeThesis
SubjectsAerospace engineering; Mechanical engineering
Publication Number1439154
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