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Broadband Microjet Flow Control Using Piezoelectric Actuators

Title: Broadband Microjet Flow Control Using Piezoelectric Actuators.
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Name(s): Hogue, Joshua, author
Oates, William S., professor directing thesis
Alvi, Farrukh, committee member
Clark, Jonathan, committee member
Department of Mechanical Engineering, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2011
Publisher: Florida State University
Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: A piezohydraulic active flow control actuator is developed using a 400 µm diameter micro jet that is capable of pulsing flow over a broad frequency range. The design of the piezohydraulic microjet is presented together with experimental results that demonstrate multiphysics system dynamic characteristics. The microjet actuator couples a piezoelectric stack actuator and a hydraulic circuit to amplify the stack actuator displacement to an amplitude that is necessary to throttle flow through the micro jet. Unsteady pressure measurements at the microjet exit are compared with the piezoelectric stack actuator displacement and voltage input to provide comparisons between internal electromechanical actuation and external pulsed flow behavior. High-speed micro-Schlieren imagery is also utilized to quantify the flow field. The results illustrate broadband supersonic pulsed microjet actuator performance using a piezohydraulic circuit.
Identifier: FSU_migr_etd-3985 (IID)
Submitted Note: A Thesis submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Spring Semester, 2011.
Date of Defense: March 25, 2011.
Keywords: piezoelectric, hydraulic actuator, pulsed flow, microjet
Bibliography Note: Includes bibliographical references.
Advisory Committee: William S. Oates, Professor Directing Thesis; Farrukh Alvi, Committee Member; Jonathan Clark, Committee Member.
Subject(s): Mechanical engineering
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3985
Use and Reproduction: This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them.
Host Institution: FSU

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Hogue, J. (2011). Broadband Microjet Flow Control Using Piezoelectric Actuators. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3985