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TECHNICAL PAPERS

Influence of Pulsating Submerged Liquid Jets on Chip-Level Thermal Phenomena

[+] Author and Article Information
Sreekant V. J. Narumanchi, Cristina H. Amon

Department of Mechanical Engineering and Institute for Complex Engineered Systems, Carnegie Mellon University, Pittsburgh, PA 15213

Jayathi Y. Murthy

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

J. Electron. Packag 125(3), 354-361 (Sep 17, 2003) (8 pages) doi:10.1115/1.1572903 History: Received February 06, 2001; Revised May 31, 2002; Online September 17, 2003
Copyright © 2003 by ASME
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References

Figures

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Step and sinusoidal waveforms with different time periods and same time-averaged velocity
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(a) Chip surface temperature with the step waveform, (b) chip surface temperature with the sinusoidal waveform, τ=2.52 s (thermal time constant of the chip)
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Comparison of chip surface temperatures with sinusoidal and step waveforms
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Velocity field at (a) t*=0.2, (b) t*=0.4, (c) t*=0.6, (d) t*=0.8; temperature contours at (e) t*=0.2, (f ) t*=0.4, (g) t*=0.6, (h) t*=0.8, for α=2.52(T=1 s)
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Velocity field at (a) t*=0.2, (b) t*=0.4, (c) t*=0.6, (d) t*=0.8; temperature contours at (e) t*=0.2, (f ) t*=0.4, (g) t*=0.6, (h) t*=0.8, for α=0.084(T=30 s)
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(a) Chip surface Nusselt numbers over a cycle with step waveform for different frequencies, (b) chip surface Nusselt numbers over a cycle with sine waveform for different frequencies
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Nondimensionalized chip temperatures from analysis and computation with step waveform for different frequencies
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Nondimensionalized chip temperatures from analysis and computation with sinusoidal waveform for different frequencies
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Comparison of chip surface temperatures obtained numerically and from analysis, with Biot number of chip=1.0, and step inlet velocity waveform with α=0.252(T=10 s)
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Comparison of chip surface temperatures obtained numerically and from lumped capacitance analysis, with Biot number of chip=10.0, and step inlet velocity waveform with α=0.252(T=10 s)

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