한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
권호 표지

엇갈린 V-형 리브가 부착된 냉각유로에서의 열유동 수치해석

NUMERICAL SIMULATION OF FLOW AND HEAT TRANSFER IN A COOLING CHANNEL WITH STAGGERED V-SHAPED RIBS

  • 명현국 (국민대학교 기계자동차공학부) ;
  • 김광용 (인하대학교 기계공학과)
  • 발행 : 2008.12.31
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초록

The present study numerically simulates the flow and heat transfer characteristics of rib-induced secondary flow in a square cooling channel with staggered V-shaped ribs, extruded on both walls. The rib pitch-to-height ratio (p/h) varies from 2.8 to 10 with the rib-height-to-hydraulic diameter ration (h/$D_h$)of 0.07 and the Reynolds number of 50,000. Shear stress transport (SST) turbulence model is used as a turbulence model. Computational results show that complex secondary flow patterns are generated in the channel due to the snaking flow in the streamwise direction for all tested cases. In the range of p/h=5 to 10 the staggered V-shaped rib gives about 3 times higher heat transfer augmentation than the reference smooth pipe with high heat transfer on both front side and the area around the leading edge of the ribs, while the former cases give about 18 times higher streamwise pressure drop than the latter ones. However, for the thermal performances, based on the equal pumping power condition, the case of p/h=2.8 gives the best result among three cases, mainly due to relatively low streamwise pressure drop, although it gives relatively low heat transfer augmentation.

키워드

참고문헌

  1. 1991, Han, J.C., Zhang, Y.M. and Lee, C.P., "Augmented Heat Transfer in Square Channels with Parallel, Crossed, and V shaped Angled Ribs," Journal of Heat Transfer, Vol.113, No.3, pp.590-596 https://doi.org/10.1115/1.2910606
  2. 1996, Taslim, M.E., Li, T. and Kercher, D.M., "Experimental Heat Transfer and Friction in Channels Roughened with Angled, V shaped, and Discrete Ribs on Two Opposite Walls," Journal of Turbomachinery, Vol.119, pp.381-389 https://doi.org/10.1115/1.2841122
  3. 1993, Kukreja, R.T., Lau, S.C. and Mcmillin, R.D., "Local Heat/Mass Transfer Distribution in a Square Channel with Full and V shaped Ribs," International Journal of Heat and Mass Transfer, Vol.36, No.8, pp.2013-2020 https://doi.org/10.1016/S0017-9310(05)80132-2
  4. 1997, Taslim, M.E. and Wadsworth, C.M., "An Experimental Investigation of the Rib Surface Avraged Heat Transfer Coefficient in a Rib Roughened Square Passage," Journal of Turbomachinery, Vol.119, pp.381-389 https://doi.org/10.1115/1.2841122
  5. 2001, Cho, H.H., Lee, S.Y. and Wu, S.J., "The Combined Effects of Rib Arrangements and Discrete Ribs on Local Heat/Mass Transfer in a Square Duct," IGTI Turbo Expo Paper, No 2001-GT-0175, Louisiana, USA
  6. 2002, Jia, R., Saidi, A. and Sunden, B., "Heat Transfer Enhancement in Square Ducts with V shaped Ribs of Various Angles," Proceedings of ASME TURBO EXPO 2002, Amsterdam, June 3-6, GT2002-30209
  7. 2003, Su, G., Chen, H.C. and Han, J.C., "Computation of Flow and Heat Transfer in Rotating Rectangular Channels (AR=4) with V shaped Ribs by A Reynolds Stress Turbulence Model," Proceedings of ASME TURBO EXPO 2003, Atlanta, June 16-19, GT-2003-38348
  8. 2007, Kim, K.Y. and Lee, Y.M., "Design Optimization of Internal Cooling Passage with V-shaped Ribs," Numerical Heat Transfer, Part A, Vol.51, pp.1103-1118 https://doi.org/10.1080/10407780601112860
  9. 1996, Lopez, J.R., Anand, N.K. and Fletcher, L.S., "Heat Transfer in a Three-Dimensional Channel with Baffles," Numerical Heat Transfer, Part A, Vol.30, pp.189-205 https://doi.org/10.1080/10407789608913835
  10. 2006, Horiuchi, Y., Kizuka, N. and Marushima, S., "Improvement of Heat Transfer Performance of Turbulence Promoter Ribs," Proceedings of GT2006, ASME Turbo Expo 2006: Power for Land, Sea and Air, GT2006-91168
  11. 1980, Gee, D.L. and Webb, R.L., "Forced Convection Heat Transfer in Helically Rib-Roughened Tubes," International Journal of Heat and Mass Transfer, Vol.23, pp.1645-1656
  12. 2005, Fluent 6.2, User's Manual, Fluent Inc
  13. 2001, Menter, F. and Esch, T., "Elements of Industrial Heat Transfer Predictions," Proceedings of 16th Bazilian Congress of Mechanical Engineering, Uberlandia, Brazil
  14. 1997, Bardina, J.E., Huang, P.G. and Coakley, T., "Turbulence Modeling Validation," AIAA Paper 97-2121