Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Heat Transfer Characteristics Around a Surface-Mounted Module Cooled by Piezoelectric Fan

압전세라믹 냉각홴에 의한 강제 공랭 모듈 주위의 열전달특성

  • 박상희 (금오공과대학교 기계공학부) ;
  • 박규진 (금오공과대학교 대학원 기계공학과) ;
  • 최성대 (금오공과대학교 기계공학)
  • Published : 2004.07.01
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Abstract

This paper reports the fluid flow and heat transfer around a module cooled by forced air flow generated by a piezoelectric(PZT) cooling fan. The fluids are locally accelerated by a flexible PZT fan which deflects inside a fluid transport system of comparatively simple structure mounted on a PCB in a parallel-plate channel(450${\times}$80${\times}$700㎣). Input voltages of 20-100V and a resonance frequency of 23㎐ were used to vibrate the cooling fan. Input power to the module was 4W. The fluid flow around the module was visualized by using PIV system. The temperature distributions around a heated module were visualized by using liquid crystal film(LCF). The cooling effect using a PZT fan was independent of the vent area ratios at the channel inlet and was similar to the forced convection cooling. We found that the flow type was Y-shape and the cooling effect was increased by the wake generated by a piezoelectric cooling fan.

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References

  1. Watanabe, H., Ihara, A., Hayashizaki, S., 1990, 'Measurement of the Three-Dimensional Flow Field Around an Oscillating Flat Plate with LDV,' Trans. JSME (B), Vol. 56, No. 532, pp. 122-129
  2. Tsutsui, T., Akiyama, M., Sugiyama, H. and Takato, K., 1991, 'Experimental Analysis of 2D-Unsteady Temperature Field by Using Mach-Zehnder Interferogram Image,' Trans. JSME (B), Vol. 62, No. 95, pp. 297-303
  3. Ihara, A. and Watanabe, H., 1994, 'On the Flow Around Flexible Plates Oscillating with Large Amplitude,' J. of Fluids and Structures, Vol. 8, pp. 601-609 https://doi.org/10.1006/jfls.1994.1030
  4. Takato, K., Tsutui, T., Akiyama, M. and Sugiyama, H., 1998, 'Numerical Analysis of Flow Around a Vibrating Elastic Plate,' Trans. JSME (B), Vol. 64, No. 97, pp. 194-202
  5. Akiyama, M. and Sugiyama, H., 1998, 'Heat Transfer Enhancement Around a Rectangular Cylinder Set in Near wake Generated by a Cantilever Vibrator,' IHTC, Vol. 5, pp. 321-326
  6. Kim, Y. H., Werely Steve and Chun, C. H., 2002, 'Flow Field Measurement Around a Vibrating Cantilever Plate,' KSME, Joint Symposium, pp. 2085-2091
  7. Burmann, P., Raman, A. and Garimella, S. V., 2003, 'Dynamics and Topology Optimization of Piezoeletric Fans,' IEEE Trans. on Components and Packaging Technologies, Vol. 25, No. 4, pp. 592-600 https://doi.org/10.1109/TCAPT.2003.809111
  8. Kline, S. J. and McClintock, F. A., 1953, 'Describing Uncertainties in Single-Sample Experiments,' Mechanical Engineering, Jan., pp. 3-8