Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

Optimization of an Asymmetric Trapezoidal Fin Based on the Fixed Fin Base Height

고정된 핀 바닥 높이에 기준한 비대칭 사다리꼴 핀의 최적화

  • 송년주 (한국폴리텍II대학 산업설비자동화과) ;
  • 강형석 (강원대학교 기계의용공학과)
  • Received : 2011.06.03
  • Accepted : 2011.12.20
  • Published : 2012.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

Optimization of the asymmetric trapezoidal fin with various upper lateral surface slope is made using a two-dimensional analytic method. For the fixed fin base height, the optimum heat loss, fin length and effectiveness are represented as inner fluid convection characteristic number, fin base thickness, fin base height, fin shape factor and ambient convection characteristic number. For this optimum procedure, the optimum heat loss is defined as 95% of the maximum heat loss from the fin. One of the results shows that optimum heat loss and effectiveness seems independent of the fin shape factor while optimum fin length decreases almost linearly as the fin shape factor increases.

위 측면 표면 기울기가 변화하는 비대칭 사다리꼴 핀의 최적화가 2차원 해석적 방법을 사용하여 수행된다. 고정된 핀 바닥 높이에 대하여 최적 열손실, 핀 길이 그리고 유용도가 내부유체 대류특성계수, 핀 바닥 두께, 핀 바닥 높이, 핀 형상계수 그리고 주위 대류특성계수의 함수로 나타내어진다. 이러한 최적화 절차를 위해서 핀으로부터의 최대 열손실 값의 95%를 최적 열손실 값으로 정의하였다. 결과 중 하나는 최적 열 손실과 유용도는 핀 형상계수의 변화에 독립적으로 보이는 반면 최적 핀 길이는 핀 형상계수가 증가함에 따라 거의 선형적으로 감소함을 보여주고 있다.

Keywords

References

  1. Park, P. W. and Choi, D. H., "Shape Optimization of a Plate-Fin Type Heat Sink with Triangular-Shaped Vortex Genertor," KSME International Journal, Vol. 18, No. 9, 2004, pp.1590-1603 https://doi.org/10.1007/BF02990374
  2. Kundu, B. and Das, P. K., "Performance and Optimum Design Analysis of Convective Fin arrays attached to Flat and Curved Primary Surfaces," Int. J. Refrigeration, Vol. 32, No. 3, 2009, pp.430-443 https://doi.org/10.1016/j.ijrefrig.2008.08.012
  3. Razels Panagiotis and Krikkis Rizos, N., "The Optimum Design of Radiating and Convective-Radiating Circular Fins," Heat Transfer Engineering, Vol. 24, No. 3, 2003, pp.17-41 https://doi.org/10.1080/01457630304066
  4. Li Ping and Kim, K. Y., "Design Optimization of Pin-Fin Shape to Enhance Heat Transfer," Department of Mechanical Engineering, 2005, pp.185-190
  5. Park, K. W. and Oh, P. K. and Lim, H. J, "Optimum Design of a Pin-Fins Type Heat Sink Using CFD and Mathematical Optimization," International Journal of Air-Conditioning and Refrigeration, Vol. 13, No. 2, 2005, pp.71-82
  6. Laror, K. and Kalman, H., "The Effect of Tip Convection on the Performance and Optimum Dimension of Cooling Fins," Heat Mass Transfer, Vol. 19, 1992, pp.359-362 https://doi.org/10.1016/0735-1933(92)90082-S
  7. Kang, H. S., "The Effect of Inside and Outside Fluids on the Optimization of a Reversed Trapezoidal Fin," Journal of the Korean Society of Propulsion Engineers, Vol. 11, No. 5, 2007, pp.14-22
  8. Kundu, B. and Das, P. K., "Performance Analysis and Optimization of Elliptical Fins Circumscribing a Circular Tube," Int. J. Heat Mass Transfer, Vol. 50, 2007, pp.173-180 https://doi.org/10.1016/j.ijheatmasstransfer.2006.06.043
  9. Casarosa, C. and Franco, A., "On the Optimum Thermal Design of Individual Longitudinal Fins with Rectangular Profile," Heat Transfer Engineering, Vol. 22, No. 1, 2001, pp.51-71 https://doi.org/10.1080/01457630117894
  10. Kang, H. S., "Optimization of a Pin Fin With Variable Base Thickness," ASME Journal of Heat Transfer, Vol. 132, 2010, pp.034501-1-4 https://doi.org/10.1115/1.4000048
  11. Kundu, B. and Bhanja, B., "An analytical prediction for performance and optimum design analysis of porous fins," International Journal of Refrigeration, Vol. 34, 2011, pp.337-352 https://doi.org/10.1016/j.ijrefrig.2010.06.011
  12. Kang, H. S. and Look, D. C., Jr., "Optimization of Thermally and Geometrically Asymmetric Trapezoidal Fins," AIAA J. of Thermophysics and Heat Transfer, Vol. 18, No. 1, 2004, pp.52-57 https://doi.org/10.2514/1.9121
  13. Kang, H. S., "Analysis of a Reversed Trapezoidal Fin using a 2-D Analytic Method," J. of the Korean Society for Industrial and Applied Mathematics, Vol. 14, No. 3, 2010, pp.151-161