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

The Korean Society of Mechanical Engineers (대한기계학회)
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Numerical Study of Surface Heat Transfer Effects of Multiple Fan-Shaped Small-Scale Fins

다중 미세 날개구조의 표면 열전달에 미치는 영향분석

  • Park, Ki-Hong (Basic Technology Research Center, LG Electronics) ;
  • Park, Sang Hu (School of Mechanical Engineering & ERC/NSDM, Pusan Nat'l Univ.) ;
  • Lee, Ju-Chul (Div. of Precision Engineering, Graduate School of Mechanical Engineering, Pusan Nat'l Univ.) ;
  • Min, June-Kee (PNU and Rolls-Royce University Technology Centre) ;
  • Ha, Man-Yeong (Basic Technology Research Center, LG Electronics)
  • 박기홍 (LG 전자 공통기술연구실) ;
  • 박상후 (부산대학교 기계공학부/정밀정형 및 금형가공연구센터) ;
  • 이주철 (부산대학교 기계공학부대학원 정밀가공시스템 전공) ;
  • 민준기 (부산대-롤스로이스 대학연구센터) ;
  • 하만영 (LG 전자 공통기술연구실)
  • Received : 2012.12.23
  • Accepted : 2013.02.12
  • Published : 2013.05.01
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Abstract

In this work, we study a heat transfer enhancement technology using fan-shaped small-scale fins. Fins having a thickness of 10 ${\mu}m$ move up-down by a pulsating flow. Owing to these motions, the heat transfer on a surface increases dramatically. The two-way FSI (fluid-structure interaction) method was applied for the analysis, and the analysis model was evaluated using a single fin model by comparing the experimental results. In summary, a maximum 40% increase in heat transfer capacity using a single and multiple small-scale fins was obtained in comparison with the results obtained without using fins. From this work, we believe that the proposed method can be a promising method for heat transfer enhancement in real applications.

전자제품과 같이 소형화 추세에 있는 제품에 대하여 열전달 촉진을 시키는 방법에 대하여 연구하였다. 두께 10 ${\mu}m$ 를 가지는 미세 날개구조를 이용하여 상하진동 운동을 유도하고 열전달 특성에 대하여 분석하였다. 본 연구에서는 양방향 유체-고체 연성해석 (Two-way FSI)를 이용하여 미세 날개의 거동을 분석하였으며, 단일 날개구조를 제작하여 해석모델을 검증하였다. 단일 및 다중 미세 날개구조에 의한 열전달 향상이 날개가 없는 경우와 비교해 볼 때 최대 40% 정도 향상됨을 알 수 있으며, 본 연구에서 제안된 방법에 의하여 향후 실제적인 열전달 촉진기술에 충분히 활용될 수 있을 것으로 사료된다.

Keywords

References

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