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TECHNICAL PAPERS

Local Heat Transfer Distributions in Confined Multiple Air Jet Impingement

[+] Author and Article Information
Suresh V. Garimella

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288e-mail: sureshg@ecn.purdue.edu

Vincent P. Schroeder

Department of Mechanical Engineering, University of Wisconsin–Milwaukee, Milwaukee, WI 53201

J. Electron. Packag 123(3), 165-172 (Dec 26, 2000) (8 pages) doi:10.1115/1.1371923 History: Received November 01, 1998; Revised December 26, 2000
Copyright © 2001 by ASME
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References

Schroeder, V. P., and Garimella, S. V., 1998, “Heat transfer from a discrete heat source in confined air jet impingement,” Heat Transfer 1998, Procs. International Heat Transfer Conference, Vol. 5, pp. 451–456.
Garimella,  S. V., and Rice,  R. A., 1995, “Confined and submerged liquid jet impingement heat transfer,” ASME J. Heat Transfer, 117, pp. 871–877.
Garimella,  S. V., and Nenaydykh,  B., 1996, “Nozzle-geoemtry effects in liquid jet impingement heat transfer,” Int. J. Heat Mass Transf., 39, pp. 2915–2923.
Fitzgerald,  J. A., and Garimella,  S. V., 1998, “A study of the flow field of a confined and submerged impinging jet,” Int. J. Heat Mass Transf., 41, pp. 1025–1034.
Huber,  A. M., and Viskanta,  R., 1994, “Convective heat transfer to a confined impinging array of air jets with spent air exits,” ASME J. Heat Transfer, 116, pp. 570–576.
Huber,  A. M., and Viskanta,  R., 1994, “Effect of jet-jet spacing on convective heat transfer to confined, impinging arrays of axisymmetric air jets,” Int. J. Heat Mass Transf., 37, pp. 2859–2869.
Obot,  N. T., and Trabold,  T. A., 1987, “Impingement heat transfer within arrays of circular jets: Part 1—Effects of minimum, intermediate, and complete crossflow for small and large spacings,” ASME J. Heat Transfer, 109, pp. 872–879.
Goldstein,  R. J., and Timmers,  J. F., 1982, “Visualization of heat transfer from arrays of impinging jets,” Int. J. Heat Mass Transf., 25, pp. 1857–1868.
Gardon, R., and Cobonpue, J., 1962, “Heat transfer between a flat plate and jets of air impinging on it,” Int. Dev. Heat Mass Transfer, Procs. 2nd Int. Heat Transfer Conf., pp. 454–460.
Behbahani,  A. I., and Goldstein,  R. J., 1983, “Local heat transfer to staggered arrays of impinging circular air jets,” ASME J. Eng. Power, 105, pp. 354–360.
Pan, Y., and Webb, B. W., 1994, “Heat transfer characteristics of arrays of free-surface liquid jets,” General Papers in Heat and Mass Transfer, Insulation, and Turbomachinery, ASME HTD-Vol. 271, pp. 23–28
Slayzak,  S. J., Viskanta,  R., and Incropera,  F. P., 1994, “Effects of interactions between adjoining rows of circular, free-surface jets on local heat transfer from the impingement surface,” ASME J. Heat Transfer, 116, pp. 88–95.
Hollworth,  B. R., and Dagan,  L., 1980, “Arrays of impinging jets with spent fluid removal through vent holes on the target surface—Part 1: Average heat transfer,” ASME J. Eng. Power 102, pp. 994–999.
Schroeder, V. P., 1997, “Heat Transfer from a Discrete Heat Source in Confined Air Jet Impingement with Single and Multiple Orifices,” M.S. thesis, University of Wisconsin-Milwaukee.
Striegl,  S. A., and Diller,  T. E., 1984, “The effect of entrainment temperature on jet impingement heat transfer,” ASME J. Heat Transfer, 106, pp. 27–33.
Sun,  H., Ma,  C. F., and Nakayama,  W., 1993, “Local characteristics of convective heat transfer from simulated microelectronic chips to impinging submerged round water jets,” ASME J. Electron. Packag., 115, pp. 71–77.
Obot, N. T., Mujumdar, A. S., and Douglas, W. J. M., 1980, “Design correlations for heat and mass transfer under various turbulent impinging jet configurations,” Drying, pp. 388–402.
Martin,  H., 1977, “Heat and mass transfer between impinging gas jets and solid surfaces,” Adv. Heat Transfer, 13, pp. 1–60.
Obot, N. T., Douglas, W. J. M., and Mujumdar, A. S., 1982, “Effect of semi-confinement on impingement heat transfer,” Procs. 7th Int. Heat Transfer Conf., Vol. 3, pp. 395–400.
Ashforth-Frost,  S., Jambunathan,  K., and Whitney,  C. F., 1997, “Velocity and turbulence characteristics of a semiconfined orthogonally impinging slot jet,” Exp. Therm. Fluid Sci., 14, pp. 60–67.
Fitzgerald,  J. A., and Garimella,  S. V., 1997, “Flow field effects on heat transfer in confined jet impingement,” ASME J. Heat Transfer 119, pp. 630–632.

Figures

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Schematic diagram of the air jet impingement experimental facility
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Jet arrays and heat source orientation for the multiple-jet experiments
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Local heat transfer coefficient distributions for the 9×1.59 mm array (open symbols) at Re=15,000 and H/d=4. The dashed vertical lines indicate the centers of the array jets located at r/d=0, 4, and 4√2 (S/d=4). Single-jet results at the same Re and H/d are plotted for comparison (solid symbols).
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Local heat transfer coefficient distribution for the 4×3.18 mm array (open symbols) at Re=20,000 and H/d=4. The dashed vertical line indicates the center of any jet in the array, located at r/d=2√2,(S/d=4); the vertical dotted line indicates the center of the heater. Single-jet results at the same Re and H/d are plotted for comparison (solid symbols).
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Variation in the 9×1.59 mm array heat transfer coefficients with orifice-target spacing for Re=15,000 (top) and 5000 (bottom)
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Variation in the 4×3.18 mm array heat transfer coefficients with orifice-target spacing for Re=20,000 (top) and 5000 (bottom)
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Effect of Reynolds number on the 9×1.59 mm array heat transfer coefficients for H/d=4 (top) and 1 (bottom). Single-jet results at the same Re and H/d are plotted for comparison (solid symbols).
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Effect of Reynolds number on the 4×3.18 mm array heat transfer coefficients for H/d=4 (top) and 0.5 (bottom). Single-jet results at the same Re and H/d are plotted for comparison (solid symbols).
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Influence of interjet spacing (S/d) on the heat transfer coefficient for the 4×3.18 mm array at H/d=4 (top) and 0.5 (bottom) and Re=20,000
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The proposed correlation for the array area-averaged Nusselt numbers (Eq. 5) and the experimental results for all the tests in this study
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Comparison of the area-averaged Nusselt numbers from the present study with the predictions of (a) Huber and Viskanta 6 and (b) Martin 18
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Comparison of heat transfer coefficients for a single 3.18 mm jet (solid symbols) with the 4×3.18 mm jet array (open symbols) at constant flow rate (ṁ≈9×10−04 kg/s) at H/d=4 (top) and 0.5 (bottom)
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Comparison of heat transfer coefficients for a single 1.59 mm jet (solid symbols) with the 9×1.59 mm jet array (open symbols) at constant flow rate (ṁ≈3.4×10−04 kg/s) at H/d=4 (top) and 1 (bottom)

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