| Citation: | LI Na, LIU Yang, GAO Jigang, et al. Prediction for aerodynamic drag of piezoelectric fan in confined space[J]. Journal of Aerospace Power, 2023, 38（9）：2204-2213 doi: 10.13224/j.cnki.jasp.20210715
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The study focused on the correlation mechanisms and laws between the aerodynamic drag, resonance response, and the unsteady flow field of the piezoelectric fans in confined space by theoretical analysis and numerical simulation. Based on Newton’s law and added-mass mechanism of viscous fluid, the model and prediction method were established for transient aerodynamic drag and 1st order bending amplitude response of piezoelectric fan in the confined space around. The developed predictive models were validated, and the results showed that there was a good agreement with the experimental results. The amplitude response decreased sharply when the gap was smaller than 5 mm. The space-limited effects can be ignored when the gap was about 20 mm.
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