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http://dx.doi.org/10.3795/KSME-B.2003.27.1.001

Jet Impingement Heat Transfer on a Cylindrical Pedestal Encountered in Chip Cooling  

Lee, Dae-Hee (인제대학교 기계자동차공학부)
Lee, Joon-Sik (서울대학교 기계항공공학부)
Chung, Young-Suk (서울대학교 대학원 기계항공공학부)
Chung, Seung-Hoon (인제대학교 대학원 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.1, 2003 , pp. 1-8 More about this Journal
Abstract
The heat transfer and flow measurements on a cylindrical pedestal mounted on a flat surface with a turbulent impinging jet were made. The experiments were made for the jet Reynolds number of Re = 23,000, the dimensionless nozzle-to-surface distance of L/d = 2~10, the dimensionless pedestal height of H/D = 0~1.5. Measurements of the surface temperature and the Nusselt number distributions on the plate surface were made using liquid crystal and shroud-transient technique. Flow measurements involve smoke flow visualization and the wall pressure coefficient. The results show that the wall pressure coefficient sharply decreases along the upper surface of the pedestal. However, the pressure increases when the fluid escapes from the pedestal and then collides on the plate surface. The secondary maxima in the Nusselt numbers occur in the region of 1.0 $\leq$ r/d $\leq$ 1.9. Their values for the case of H/D = 0.5 are maximum 80% higher than those for other cases. The formation of the secondary maxima may be attributed to the reattachment of flow on the plate surface which was separated at the edge of the pedestal.
Keywords
Cylindrical Pedestal; Liquid Crystal; Shroud-Transient Technique; Nusselt Number; Chip Cooling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Chung, Y. S., Lee, D. H., and Lee, J. S., 1999, 'Heat transfer Characteristics of an Axisymmetric Jet Impinging on the Rib-Roughened Convex Surface,' International Journal of Heat and Mass Transfer, Vol. 42, pp. 2101-2110   DOI   ScienceOn
2 Lee, D. H., Won, S. Y., Kim, Y. T., and Chung, Y. S., 2001, 'Turbulent Heat Transfer from a Flat Surface to a Swirling Round Impinging Jet,' International Journal of Heat and Mass Transfer, Vol. 45, No. 1, pp. 223-227   DOI   ScienceOn
3 Lee, D. H., Lee, Y. M., Kim, Y. T., Won, S. Y., and Chung, Y. S., 2001, 'Heat Transfer Enhancement by the Perforated Plate Installed Between an Impinging Jet and the Target Plate,' International Journal of Heat and Mass Transfer, Vol. 45, No. 1, pp. 213-217   DOI   ScienceOn
4 Chung Young Suk, Lee Dae Hee, and Lee Joon Sik, 1998, 'Heat Transfer Cefficient Measurement by a Jet Impinging on a Rib-Roughened Convex Surface,' Trans. of the KSME, B, Vol. 22, No. 3, pp. 373-385   과학기술학회마을
5 Sparrow, E. M. and Larson, E. D., 1982, 'Heat Transfer From Fin-Pins Situated in an Oncoming Longitudinal Flow Which Turns to Crossflow,' International Journal of Heat and Mass Transfer. Vol. 25, No. 5, pp. 603-614   DOI   ScienceOn
6 Kline, S. J., McKlintock, F. A., 1953, 'Describing Uncertainties in Single Sample Experiments,' Mechanical Engineering, Vol. 75, pp. 3-8
7 Rajaratnam, N., 1976, 'Turbulent Jet,' Elsevier Scientific, The Netherlands
8 Dunne, S. T., 1983, 'A Study of Flow and Heat Transfer in Gas Turbine Cooling Passages,' D. Phil. Thesis. Oxford University, UK
9 Lee, D. H., Shung, Y. S., and Kim, D. S., 1997, 'Turbulent Flow and Heat Transfer Measurements on a Curved Surface with a Fully Developed Round Impinging Jet,' International Journal of Heat and Fluid Flow, Vol. 18, No. 1, pp. 160-169   DOI   ScienceOn
10 Lee Dae Hee, Won De Youl, Lee Young Min, and Cho Heon No, 2000, 'The Effect of Nozzle Diameter on Heat Transfer to a Fully Developed Round Impinging Jet,' Trans. of the KSME. B. Vol. 24, No. 4, pp. 519-525   과학기술학회마을
11 Baughn, J. W., Mesbah, M. and Yan, X., 1993, 'Measurements of local heat transfer for an impinging jet on a cylindrical pedestal,' Turbulent Enhanced Heat Transfer ASME. HTD-Vol. 239, pp. 57-62
12 Sullivan, P. F., Ramadhyani, S., and Incropera, F. P., 1992a, 'Extended Surfaces to Enhanced Impingment Cooling With Single Circular Liquid Jets,' Proceedings of the ASME/JSME Joint Conference on Electronic Packaging. San Jose, CA, ASME EEP-Vol. 1-1, pp. 207-216
13 Wadsworth, D. C., 1989, 'Cooling of a Multichip Electronic Module by Means of Confined Two-Dimensional Jets of Dellectric Liquid,' M.S.M.E. Thesis, Purdue University
14 Sullivan, P. F., Ramadhyani, S., and Incropera, F. P., 1992b, 'Use of Smooth and Roughened Spreader Plates to Enhance Impingment Cooling With Single Circular Liquid Jets,' National Heat Transfer Conference, San Diego. CA, ASME HTD-Vol. 206-2, pp. 103-110
15 Priedeman, D., Callahan, V., and Webb, B. W., 1993, 'Enhanced Surface Liquid Jet Impingement Heat Transfer,' The 1993 ASME Winter Annual Meeting, New Orleans. Louisiana, ASME HTD-Vol. 263, pp. 43-48
16 Teuscher, K. L., 1992, 'Packaging Methods for Jet Impingment Cooling of an Array of Discrete Heat Sources,' M.S.M.E. Thesis, Purdue University