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Research Papers

Transient Response of an Oscillating Heat Pipe by a Pulsed Heating in a High Magnetic Field Environment

[+] Author and Article Information
C. D. Smoot, A. A. Hathaway

Department of Mechanical
and Aerospace Engineering,
University of Missouri,
Columbia, MO 65211

H. B. Ma

LaPierre Professor
Department of Mechanical
and Aerospace Engineering,
University of Missouri,
Columbia, MO 65211
e-mail: mah@missouri.edu

M. T. Crawford

Los Alamos National Laboratory,
P.O. Box 1663,
Los Alamos, NM 87545

B. M. Huhman

Plasma Physics Division,
U.S. Naval Research Laboratory,
Washington, DC 20375

Annie Sobel

Department of Electrical Engineering,
University of Missouri,
Columbia, MO 65211

1Corresponding author.

Contributed by the Electronic and Photonic Packaging Division of ASME for publication in the JOURNAL OF ELECTRONIC PACKAGING. Manuscript received December 24, 2013; final manuscript received May 14, 2015; published online June 4, 2015. Assoc. Editor: Mehmet Arik.

The United States Government retains, and by accepting the article for publication, the publisher acknowledges that the United States Government retains, a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for United States Government purposes.

J. Electron. Packag 137(3), 031008 (Sep 01, 2015) (7 pages) Paper No: EP-13-1139; doi: 10.1115/1.4030642 History: Received December 24, 2013; Revised May 14, 2015; Online June 04, 2015

An experimental investigation of a compact, triple-layer oscillating heat pipe (OHP) has been conducted to determine the fast-transient heating effect on the heat transport capability of an OHP in a high magnetic field environment. The OHP has dimensions of 1.3 cm thick, 22.9 cm long, and 7.6 cm wide embedded with two-independent closed-loops forming three layers of channels. The OHP was directly clamped to a railgun system in a medium caliber launcher (MCL) and subjected to high current electric discharges occurring over several microseconds. The experimental results show that the OHP is capable of significantly reducing peak temperatures during a pulsed heating event over pure copper, even in the presence of relatively high magnetic fields.

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References

Figures

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Fig. 1

Cutaway view of OHP

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Fig. 2

Experimental setup

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Fig. 3

Current waveforms for different capacitor bank charge voltages

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Fig. 4

Thermocouple locations

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Fig. 5

Temperature rise of rail thermocouples during three-bank tests

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Fig. 6

Temperature rise of rail during single-bank tests

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Fig. 7

Average temperature difference across samples during three-bank tests

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Fig. 8

Average temperature difference across samples during single-bank tests

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Fig. 9

Effective thermal conductivity of the OHP during three-bank tests

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Fig. 10

Effective thermal conductivity of the OHP during single-bank tests

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