Abstract/Details

Development of an aerodynamic synthetic jet actuator based on a piezoceramic buckled beam


2006 2006

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Abstract (summary)

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.

Indexing (details)


Subject
Aerospace materials;
Mechanical engineering
Classification
0538: Aerospace materials
0548: Mechanical engineering
Identifier / keyword
Applied sciences
Title
Development of an aerodynamic synthetic jet actuator based on a piezoceramic buckled beam
Author
Clingman, Dan J.
Number of pages
122
Publication year
2006
Degree date
2006
School code
0117
Source
MAI 45/02M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780542960086
Advisor
Flatau, Alison
University/institution
University of Maryland, College Park
University location
United States -- Maryland
Degree
M.S.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
1439154
ProQuest document ID
305301887
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305301887
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