%0 Journal Article
%@ 0020-7403
%A Dau, Van Thanh
%A Dinh, Thien Xuan
%A Bui, Thanh Tung
%A Tran, Canh-Dung
%D 2018
%F SisLab:3013
%J International Journal of Mechanical Sciences
%K PZT diaphragm, OpenFOAM, Confined space, Synthetic jet, Vortex flow
%P 432-439
%T Vortex flow generator utilizing synthetic jets by diaphragm vibration
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3013/
%V 142-14
%X 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.