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Vortex flow generator utilizing synthetic jets by diaphragm vibration

Dau, Van Thanh and Dinh, Thien Xuan and Bui, Thanh Tung and Tran, Canh-Dung (2018) Vortex flow generator utilizing synthetic jets by diaphragm vibration. International Journal of Mechanical Sciences, 142-14 . pp. 432-439. ISSN 0020-7403

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This paper develops a millimeter scale fully packaged device in which a vortex flow of high velocity is generated inside a chamber. Under the actuation by a lead zirconate titanate (PZT) diaphragm, a flow circulates with increasing velocity after each actuating circle to form a vortex in a cavity named as the vortex chamber. At each cycle, the vibration of the PZT diaphragm creates a small net air flow through a rectifying nozzle, generates a synthetic jet which propagates by a gradual circulation toward the vortex chamber and then backward the feedback chamber. The design of such device is firstly conducted by a numerical analysis whose results are considered as the base of our experimental set-up. A vortex flow generated in the votex chamber was observed by a high-speed camera. The present approach which was illustrated by both the simulation and experiment is potential in various applications related to the inertial sensing, fluidic amplifier and micro/nano particle trapping and mixing.

Item Type: Article
Uncontrolled Keywords: PZT diaphragm, OpenFOAM, Confined space, Synthetic jet, Vortex flow
Subjects: ISI-indexed journals
Divisions: Faculty of Electronics and Telecommunications (FET)
Depositing User: Bùi Thanh Tùng
Date Deposited: 13 Jun 2018 09:38
Last Modified: 13 Jun 2018 09:38

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