Enhancing Jet Velocity and Power Conversion Efficiency of Piezoelectric Synthetic Jet Actuators

Gungordu, Baris; Jabbal, Mark; Popov, Atanas A.

Abstract

The present work discusses an experimental investigation into the effect of piezoceramic employed to drive a synthetic jet actuator into a quiescent flow. The electromechanical coupling ratio of polycrystalline piezoceramics, lead zirconate–titanate 5A/5H (PZT-5A/5H), conventionally used in synthetic jet actuators, is inherently low. Therefore, this study aims to investigate using more electromechanically efficient piezoceramics, such as single-crystal, lead magnesium niobate–lead titanate (PMN-PT). In addition, two different orifice-diaphragm configurations of synthetic jet actuators, opposite and adjacent, are tested. It is identified that PMN-PT piezoceramic promotes three times higher transverse diaphragm displacement and two times more peak jet velocity compared to the PZT-5A piezoelectric actuator for the same input diaphragm voltage. A peak exit jet velocity of 99.5  m⋅s−1 was obtained at 40 V of peak supply voltage, which can be classified as a low voltage supply compared to other studies in the literature that obtained similar exit jet velocity. Also, a power conversion efficiency of 72% was achieved, corresponding to the Helmholtz resonance frequency. A new figure-of-merit, momentum coefficient per power consumption, is defined to evaluate the potential impact for full-scale implementation. A state-of-the-art value of 0.09  MW−1 is achieved.

• Journal Article Type: Article
• Acceptance Date: Jun 22, 2023
• Online Publication Date: Jul 13, 2023
• Publication Date: 2023-10
• Deposit Date: Jul 18, 2023
• Publicly Available Date: Jul 19, 2023
• Journal: AIAA Journal
• Print ISSN: 0001-1452
• Electronic ISSN: 1533-385X
• Publisher: American Institute of Aeronautics and Astronautics
• Peer Reviewed: Peer Reviewed
• Volume: 61
• Issue: 10
• Pages: 4321–4331
• DOI: https://doi.org/10.2514/1.j062930
• Keywords: Aerospace Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/23210959
• Publisher URL: https://arc.aiaa.org/doi/10.2514/1.J062930