Transient heat transfer behavior from a horizontally confined ceramic-based MCM disk with jet impingement has been systematically explored. The relevant parameters influencing heat transfer performance are the steady-state Grashof number, jet Reynolds number, and ratio of jet separation distance to nozzle diameter. In addition, an effective time, representing a certain transient time when the mixed convection effect due to jet impingement and buoyancy becomes significant relative to heat conduction, is introduced. Both the transient chip and average Nusselt numbers on the MCM disk surface decrease with time in a very beginning period of whereas it gradually increases or keeps constant with time and finally approaches the steady-state value in the period of As compared with the steady-state results, if the transient chip and average heat transfer behaviors may be considered as a superposition of a series of quasi-steady states, the transient chip and average Nusselt numbers in all the present transient experiments can be properly predicted by the existing steady-state correlations when in the power-on transient period.
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March 2004
Technical Papers
Transient Convective Heat Transfer of Air Jet Impinging Onto a Confined Ceramic-Based MCM Disk
Li-Kang Liu, Graduate Student,
Li-Kang Liu, Graduate Student
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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Wen-Shien Su, Graduate Student,
Wen-Shien Su, Graduate Student
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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Ying-Huei Hung, Professor, Fellow ASME
Ying-Huei Hung, Professor, Fellow ASME
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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Li-Kang Liu, Graduate Student
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
Wen-Shien Su, Graduate Student
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
Ying-Huei Hung, Professor, Fellow ASME
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
Contributed by the Electronic and Photonic Packaging Division for publication in the JOURNAL OF ELECTRONIC PACKAGING. Manuscript received January 2003; final revision, November 2003. Associate Editor: K. Kishimoto.
J. Electron. Packag. Mar 2004, 126(1): 159-172 (14 pages)
Published Online: April 30, 2004
Article history
Received:
January 1, 2003
Revised:
November 1, 2003
Online:
April 30, 2004
Citation
Liu, L., Su, W., and Hung, Y. (April 30, 2004). "Transient Convective Heat Transfer of Air Jet Impinging Onto a Confined Ceramic-Based MCM Disk ." ASME. J. Electron. Packag. March 2004; 126(1): 159–172. https://doi.org/10.1115/1.1649239
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