Journal of Advanced Marine Engineering and Technology

  • 제35권2호
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  • Pages.224-231
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  • 2011
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  • 2234-7925(pISSN)
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  • 2234-8352(eISSN)
한국마린엔지니어링학회 (The Korean Society of Marine Engineering)
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핀-휜 구조물을 삽입한 채널의 열전달 특성과 압력강하에 관한 수치해석

Numerical Analysis on the Heat Transfer and Pressure Drop Characteristics of a Channel with Pin-fin Structure

  • 투고 : 2011.01.26
  • 심사 : 2011.03.09
  • 발행 : 2011.03.31
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초록

핀-휜 구조물이 삽입된 채널은 열전달이 향상되는 것으로 알려져 있다. 복잡한 핀-휜 구조물은 다공성 매체로 모사할 수 있을 만큼 매우 불규칙적인 유동을 보여준다. 본 연구는 수치해석을 통하여 핀-휜 구조물이 삽입된 채널의 열전달과 압력강하의 특성을 분석하였다. 유효유동공간비가 높고 직경이 큰 경우 실험데이터를 잘 예측 하였지만, 유효유동공간비가 낮은 경우 비교적 오차가 큰 편이었다. 유효유동 공간비가 낮을수록 유동교란이 강해져서 열전달이 증가하지만 압력강하도 증가하여 팬의 동력이 증가하기 때문에 최적점을 찾아서 설계하여야 한다. 본 연구에서는 전면유속이 5m/s 일 때, D25 모델에서는 유효유동공간비가 0.5인 지점에서, D05 모델에서는 0.9에서 압력강하가 급격하게 늘어나기 때문에 이보다 더 작은 유효유동공간비에서의 작동은 바람직하지 않다.

Heating and/or cooling of the channel with pin-fin structure is a promising choice for the efficient heat transfer. Complex pin-fin structure shows highly irregular behavior like porous media. This study shows the numerical analysis on the characteristic of heat transfer and pressure drop of a channel with pin-fin structure. It predicts the experimental data quite well at the high porosity region with large diameter. Low porosity activates the rigorous flow disturbance and, consequently, the enhanced heat transfer. However, the concept of optimum design should be carefully reviewed because the pressure drop is also increased with decreasing porosity at low porosity region.

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참고문헌

  1. J. Y. Shin, Y. S. Son, S. M. Kim and D. Y. Lee, "Experiments on the heat transfer and pressure drop characteristics of a channel with pin-fin array", Transactions of the Society of Air-Conditioning and Refrigerating Engineers of Korea, vol. 16, no. 7, pp. 623-629, 2004.
  2. S. Oktay, R. Hannemann, and A. Bar-Cohen, "High heat from a small package", Mechanical Engineering, vol. 108, pp. 36-42, 1996.
  3. A. D. Kraus, and A. Bar-Cohen, Thermal Analysis and Control of Electronic Equipment, McGraw Hill, New York, 1983.
  4. Y. S. Son, and J. Y. Shin, "Cooling characteristics of a parallel channel with protruding hear sources using convection and conduction heat transfer", Transactions of the Society of Air-Conditioning and Refrigeration Engineers of Korea, vol. 14, no. 11, pp. 923-930, 2002.
  5. 손영석, 신지영, "다양한 냉각 방법에 따른 수평채널 내 전자부품의 열전달 특성", 한국마린엔지니어링학회지, 제32권, 제6호, pp. 854-861, 2008.
  6. 손영석, 신지영, 조영일, "다공성매질을 삽입한 수평채널의 열전달 및 압력강하 특성", 한국마린엔지니어링학회지, 제33권, 제2호, pp. 244-251, 2009. https://doi.org/10.5916/jkosme.2009.33.2.244
  7. J. S. Jin, D. Y. Lee and B. H. Kang, "Effect of the hydraulic boundary layer on the convective heat transfer in porous media", Transactions of The Korea Society of Mechanical Engineers, vol. 24, no. 8, pp. 1119-1127, 2000.
  8. D. Y. Lee, J. S. Lee and B. H. Kang, "Optimum design of a compact heat exchanger with foam metal insertion", Transactions of the Society of Air-Conditioning and Refrigerating Engineers of Korea, vol. 13, no. 7, pp. 612-620, 2001.
  9. W. P. Jones, and B. E. Launder, "The prediction of laminarization with a two-equation model of turbulence", International Journal of Heat and Mass Transfer, vol. 15, pp. 301-314, 1972. https://doi.org/10.1016/0017-9310(72)90076-2
  10. G. J. VanFossen, "Heat transfer coefficients for staggered arrays of short pin fins", ASME J. of Heat Transfer, vol. 14, pp. 268-273, 1982.
  11. H. H. Cho and R. J. Goldstein, "Heat transfer and friction loss characteristics of shaped short pin-fin arrays", Transactions of The Society of Air-Conditioning and Refrigerating Engineers of Korea, vol. 9, no. 3, pp. 259-267, 1997.
  12. H. I. You and C. H. You, "Numerical prediction of heat transfer coefficient for a pin-fin channel flow", ASME J. of Heat Transfer, vol. 119, pp. 840-843, 1997. https://doi.org/10.1115/1.2824191
  13. J. Y. Shin, Y. S. Shin and D. Y. Lee, "Analysis on the cooling characteristics of a channel with pin-fin structure", Transactions of the Society of Air-Conditioning and Refrigerating Engineers of Korea, vol. 15, no. 8, pp. 667-673, 2003.
  14. A. Zhukauskas, "Heat transfer from tubes in cross flow", J. P. Hartnett and T. F. Irvine, Jr., Eds., Advances in Heat Transfer, vol. 8, Academic Press, New york, 1972.