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Original title:
Bio-Inspired Synthetic Jet Actuator with Piezoelectrically Driven Nozzle with Oscillating Cross Section Area
Authors: Trávníček, Zdeněk ; Antošová, Zuzana ; Wang, A.B.
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2025, Prague (CZ), 20250212
Year: 2025
Language: eng
Abstract: A novel variant of a synthetic jet actuator (SJA) was designed and tested in air. This variant is based on biomimetic ideas recognizing that the synthetic jet principles can be observed in nature as the jetting process used by various underwater creatures to generate thrust for their locomotion. While practically all technical SJAs used rigid nozzles with constant cross-sectional areas, the living creatures use flexible and adjustable tissues. To mimic the jetting mechanism of living creatures, the proposed SJA uses a flexible nozzle with a temporally variable cross section. The modulation amplitude of the nozzle cross-section area was approximately ±33% of the average area at the driving frequency of f = 62 Hz. The characteristic velocity and Reynolds number were 7.6 m/s and 2,420, respectively.
Keywords: actuator; biomimetics; synthetic jet
Project no.: NSTC-24-03 (CEP)
Funding provider: AV ČR
Host item entry: Topical Problems of Fluid Mechanics 2025, ISBN 978-80-87012-05-5, ISSN 2336-5781
Note: Související webová stránka: http://www2.it.cas.cz/fm/im/im/proceeding/2025/32
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0366300
Permalink: http://www.nusl.cz/ntk/nusl-679003
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Authors: Trávníček, Zdeněk ; Antošová, Zuzana ; Wang, A.B.
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2025, Prague (CZ), 20250212
Year: 2025
Language: eng
Abstract: A novel variant of a synthetic jet actuator (SJA) was designed and tested in air. This variant is based on biomimetic ideas recognizing that the synthetic jet principles can be observed in nature as the jetting process used by various underwater creatures to generate thrust for their locomotion. While practically all technical SJAs used rigid nozzles with constant cross-sectional areas, the living creatures use flexible and adjustable tissues. To mimic the jetting mechanism of living creatures, the proposed SJA uses a flexible nozzle with a temporally variable cross section. The modulation amplitude of the nozzle cross-section area was approximately ±33% of the average area at the driving frequency of f = 62 Hz. The characteristic velocity and Reynolds number were 7.6 m/s and 2,420, respectively.
Keywords: actuator; biomimetics; synthetic jet
Project no.: NSTC-24-03 (CEP)
Funding provider: AV ČR
Host item entry: Topical Problems of Fluid Mechanics 2025, ISBN 978-80-87012-05-5, ISSN 2336-5781
Note: Související webová stránka: http://www2.it.cas.cz/fm/im/im/proceeding/2025/32
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0366300
Permalink: http://www.nusl.cz/ntk/nusl-679003
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Record created 2025-05-24, last modified 2025-05-24