Thermal management has a key role in the development of advanced electronic devices to keep the device temperature below a maximum operating temperature. Jet impingement and high conductive porous inserts can provide a high efficiency cooling and temperature control for a variety of applications including electronics cooling. In this work, advanced heat management devices are designed and numerically studied employing single and multijet impingement through porous-filled channels with inclined walls. The base of these porous-filled nonuniform heat exchanging channels will be in contact with the devices to be cooled; as such the base is subject to a high heat flux leaving the devices. The coolant enters the heat exchanging device through single or multijet impingement normal to the base, moves through the porous field and leaves through horizontal exit channels. For numerical modeling, local thermal nonequilibrium model in porous media is employed in which volume averaging over each of the solid and fluid phase results in two energy equations, one for solid phase and one for fluid phase. The cooling performance of more than 30 single and multijet impingement designs are analyzed and compared to achieve advantageous designs with low or uniform base temperature profiles and high thermal effectiveness. The effects of porosity value and employment of 5% titanium dioxide (TiO2) in water in multijet impingement cases are also investigated.
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Thermal Analysis of Multijet Impingement Through Porous Media to Design a Confined Heat Management System
Carlos Zing,
Carlos Zing
Mechanical Engineering Department,
California State University, Northridge,
Northridge, CA 91330
California State University, Northridge,
Northridge, CA 91330
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Shadi Mahjoob
Shadi Mahjoob
Mechanical Engineering Department,
California State University, Northridge,
Northridge, CA 91330
e-mail: shadi.mahjoob@csun.edu
California State University, Northridge,
Northridge, CA 91330
e-mail: shadi.mahjoob@csun.edu
1Corresponding author.
Search for other works by this author on:
Carlos Zing
Mechanical Engineering Department,
California State University, Northridge,
Northridge, CA 91330
California State University, Northridge,
Northridge, CA 91330
Shadi Mahjoob
Mechanical Engineering Department,
California State University, Northridge,
Northridge, CA 91330
e-mail: shadi.mahjoob@csun.edu
California State University, Northridge,
Northridge, CA 91330
e-mail: shadi.mahjoob@csun.edu
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received February 6, 2019; final manuscript received May 23, 2019; published online July 3, 2019. Assoc. Editor: Amy Fleischer.
J. Heat Transfer. Aug 2019, 141(8): 082203 (12 pages)
Published Online: July 3, 2019
Article history
Received:
February 6, 2019
Revised:
May 23, 2019
Citation
Zing, C., and Mahjoob, S. (July 3, 2019). "Thermal Analysis of Multijet Impingement Through Porous Media to Design a Confined Heat Management System." ASME. J. Heat Transfer. August 2019; 141(8): 082203. https://doi.org/10.1115/1.4044008
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