An Overview of Synthetic Jet Under Different Clamping and Amplitude Modulation Techniques

Itimad, D. J. Azzawi, Artur J. Jaworski, Xiaoan Mao

Research output: Contribution to journalArticle

Abstract

There is generally limited guidance available on the optimum clamping method for the diaphragms used in the SJAs. This paper describes the effects of clamping methods (O-rings, neoprene rubber washers and metal-to-metal clamping) on the actuator diaphragm displacement using Polytec Scan Vibrometer (PSV). Once the clamping type was conducted, an optimization study to examine the effect of geometrical parameters for three designs of synthetic jet actuators in quiescent conditions – in particular number of orifices per cavity, the space between them and their effects on the jet velocity were investigated. It has also been shown that by utilising the Helmholtz resonance of the cavity and amplitude modulation of the excitation signal, the actuator can exhibit a more significant “blowing” velocity at a reduced power input.
Original languageEnglish
Article numberFE-20-1384
JournalJournal of Fluids Engineering, Transactions of the ASME
Early online date28 Oct 2020
DOIs
Publication statusE-pub ahead of print - 28 Oct 2020

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