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Design and analysis of a compact synthetic-jet-based air pump for large airflow

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Abstract

In this paper, a compact synthetic jet actuator comprising a primary jet actuator and a synthetic jet chamber was proposed. This synthetic jet actuator can enhance the total airflow rate by combining the primary, and secondary flows synthesized by the synthetic jet. The oscillating diaphragm and valve parts of the synthetic jet actuator were designed as a closed magnetic flux loop to enhance the magnetic flux density in the coils. The primary jet actuator was designed with a separate inlet and outlet to serve as a heat-dissipation application and prevent the re-ingesting of heated air. Thus, a dynamic model of a synthetic jet actuator was constructed, and motion equations were subsequently derived using plate theory, the Lorentz law, and magnetic flux simulation. The behavior in association with the displacement of the oscillating diaphragm, oscillation frequency, and driving current is discussed in this paper. Finally, an experimental rig was constructed to verify the correctness of the airflow simulations. The synthetic jet actuator was integrated with flow channels, and achieved an airflow rate of 9.23 L/min at a 1.5 V driving voltage.

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Acknowledgments

The authors appreciate the support from the National Science Council of the R.O.C. (grant no. NSC 102-2221-E-027-115 and 102-2622-E-027-016-CC3). This work was partially supported by the Tainan District Agricultural Research and Extension Station, Council of Agriculture, Executive Yuan.

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Correspondence to Yu-Jen Wang.

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Wang, YJ., Chen, CD. & Li, C. Design and analysis of a compact synthetic-jet-based air pump for large airflow. Microsyst Technol 21, 1437–1446 (2015). https://doi.org/10.1007/s00542-014-2257-x

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  • DOI: https://doi.org/10.1007/s00542-014-2257-x

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