THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Jiahong Fu

,

Yichen Chen

,

Yu Zhang

,

Xufang Zhang

ENHANCED HEAT TRANSFER RESEARCH IN LIQUID-COOLED CHANNEL BASED ON PIEZOELECTRIC VIBRATING CANTILEVER

ABSTRACT
In order to study the variation of vortices and heat transfer enhancement characteristics of piezoelectric vibrating cantilever in liquid-cooled channels, the effects of fluid density and viscosity, mainstream velocity, and excitation voltage on vortices were analyzed. The theoretical and numerical simulation of piezoelectric vortices was carried out by using fluid-solid coupling method. On the basis of hydrodynamic function considering the additional effect of liquid viscosity and density on piezoelectric vibrator, the vortex structure of piezoelectric vibrator was analyzed by panel method free-wake model. It is found that the larger the density of the liquid, the smaller the vortex shedding strength and the radius of the core. The larger the viscosity of the liquid, the easier to fully develop the vortex generated by the excitation. The increase of the mainstream flow velocity is beneficial to the development of the vortex structure and the increase of the vorticity intensity. Compared with the increase of the mainstream flow velocity, the excitation voltage is more conducive to the enhancement of the vorticity structure, then make it easier to mix hot and cold fluids, thus enhancing heat transfer.
KEYWORDS
enhanced heat transfer, Piezoelectric vibrating cantilever, Fluid-solid Interaction, Vortex analysis
PAPER SUBMITTED: 2020-05-20
PAPER REVISED: 2020-06-24
PAPER ACCEPTED: 2020-06-30
PUBLISHED ONLINE: 2020-09-12
DOI REFERENCE: https://doi.org/10.2298/TSCI200520244F
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 2, PAGES [823 - 832]
REFERENCES
  1. Wait, S. M., et al., Piezoelectric Fans Using Higher Flexural Modes for Electronics Cooling Applications, IEEE Transactions on Components and Packaging Technologies, 30 (2007), 1, pp. 119-128
  2. Sufian, S. F., et al., Effect of Side and Tip Gaps of a Piezoelectric Fan on Microelectronic Cooling, IEEE Transactions on Components Packaging and Manufacturing Technology, 3 (2013), 9, pp. 1545-1553
  3. Zhou, Y., et al., Investigation on the Flow Field and Heat Transfer Characteristics of a Piezoelectric Fan Embedded Cooling System, Piezoelectrics and Acoustooptics, 40 (2018), 2, pp. 309-312
  4. Kong, Y., et al., Structure Design of Piezoelectric Fans and Research on Influence of Parameters, Journal of Beijing University of Aeronautics and Astronautics, 42 (2016), 9, pp. 1977-1985
  5. Li, X. J., et al., Experimental Investigation of Pin-Fin Heat Sink with Piezoelectric Cooling Fan, Journal of Engineering Thermophysics, 39 (2018), 1, pp. 155-158
  6. Li, X. J., et al., Characteristics of Heat Transfer with Dual Piezoelectric Fans in Presence of Cross-flow, Acta Aeronautica et Astro, 39 (2018), 1, pp. 108-117
  7. Toda, M., OSAKA, S., Vibrational Fan Using the Piezoelectric Polymer PVF2, Proceedings of the IEEE, 67 (1979), 8, pp. 1171-1173
  8. Kimber, M., et al., Local Heat Transfer Coefficients Induced by Piezoelectrically Actuated Vibrating Cantilevers, Journal of Heat Transfer, 129 (2007), 9, pp. 1168-1177
  9. Lin, C. N., Analysis of 3-D Heat and Fluid-Flow Induced by Piezoelectric Fan, International Journal of Heat and Mass Transfer, 55 (2012), 11, pp. 3043-3053
  10. Lin, C. N., Enhanced Heat Transfer Performance of Cylindrical Surface by Piezoelectric Fan under Forced Convection Conditions, International Journal of Heat and Mass Transfer, 60 (2013), May, pp. 296-308
  11. Chon, J. W. M., et al., Experimental Validation of Theoretical Models for The Frequency Response of Atomic Force Microscope Cantilever Beams Immersed in Fluids, Journal of Applied Physics, 87 (2000), 8, pp. 3978-3988
  12. Korayem, M. H., et al., Frequency Response of Atomic Force Microscopy Microcantilevers Oscillating in a Viscous Liquid: A Comparison of Various Methods, Scientia Iranica, 18 (2011), 5, pp. 1116-1125
  13. Maali, A., et al., Hydrodynamics of Oscillating Atomic Force Microscopy Cantilevers in Viscous Fluids, Journal of Applied Physics, 97 (2005), 7, pp. 71-76
  14. Tang, L., Paidoussis, M. P., On the Instability and the Post-Critical Behavior of 2-D Cantilevered Flexible Plates in Axial Flow, Journal of Sound and Vibration, 30 5(2007), 1-2, pp. 97-115
  15. Han, C., et al., Unsteady Aerodynamic Analysis of Tandem Flat Plates in Ground Effect, Journal of Aircraft, 39 (2002), 6, pp. 1028-1034
  16. Song, K. W., et al., Relationship between Longitudinal Vortex Intensity and Heat Transfer Intensity of Flat Tube Heat Exchanger, Ciesc Journal, 67 (2016), 5, pp. 1858-1867
  17. Liu, C. J., et al., Numerical Simulation for Heat Transfer Enhancement Mechanism of Vorticity Intensity, Journal of Hebei University of Technology, 43 (2014), 3, pp. 65-68
  18. Huang, Q., et al., Influence of Vortex on Heat Transfer Enhancement in Triangular Grooved Channel by Pulsating Flow, Ciesc Journal, 67 (2016), 9, pp. 3616-3624
PDF VERSION [DOWNLOAD]
Enhanced heat transfer research in liquid-cooled channel based on piezoelectric vibrating cantilever

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence