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Numerical evaluation of additively manufactured lattice architectures for heat sink applications

Tisha Dixit, Perumal Nithiarasu Orcid Logo, S. Kumar

International Journal of Thermal Sciences, Volume: 159, Start page: 106607

Swansea University Author: Perumal Nithiarasu Orcid Logo

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DOI (Published version): 10.1016/j.ijthermalsci.2020.106607

Abstract

Tailoring the architectural characteristics of lattice materials at different length scales, from nano to macro, has become tenable with emerging advances in additive manufacturing. Cumulative needs of high heat dissipation rates and structural requirements along with lightweight constraints have le...

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Published in: International Journal of Thermal Sciences
ISSN: 1290-0729
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa55184
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spelling 2020-11-04T15:54:22.3402288 v2 55184 2020-09-16 Numerical evaluation of additively manufactured lattice architectures for heat sink applications 3b28bf59358fc2b9bd9a46897dbfc92d 0000-0002-4901-2980 Perumal Nithiarasu Perumal Nithiarasu true false 2020-09-16 CIVL Tailoring the architectural characteristics of lattice materials at different length scales, from nano to macro, has become tenable with emerging advances in additive manufacturing. Cumulative needs of high heat dissipation rates and structural requirements along with lightweight constraints have led to the development of several heat sink fins with lattice architectures in heat exchange-applications. Here, we numerically investigate the potential of polymer-based 3D printed lattice architectures as extended heat transfer surfaces and examine the forced-convection characteristics of simple-cubic, body-centered-cubic and face-centered-cubic trusses as well as simple-cubic plate, and Kelvin and Octet periodic lattices with mesostructured architecture. All these lattices have a porosity of 77% (relative density ~) and surface area density in the range of . Thermal and hydraulic finite element studies were conducted for fluid flow over the lattice architectures for low Reynolds number in the range of and constant wall temperature conditions. The performance of different cell-topologies is characterized in terms of exit fluid temperature, heat transfer coefficient with respect to different reference surface areas, pressure drop per unit length, Colburn factor j, Fanning friction factor f and area goodness factor j/f. The study of the influence of thermal conductivity on heat transfer rate reveals that the polymer-based architected heat sinks perform close to their metallic counterparts when evaluated on per unit mass basis. Furthermore, body-centered-cubic truss, simple-cubic plate, and Kelvin and Octet lattice-cells were found to exhibit better thermal performance than some microchannel and open-cell foam heat sinks. Journal Article International Journal of Thermal Sciences 159 106607 Elsevier BV 1290-0729 Architected materials, Lattice materials, 3D printing, Heat transfer, Thermal management, Heat sinks 1 1 2021 2021-01-01 10.1016/j.ijthermalsci.2020.106607 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University 2020-11-04T15:54:22.3402288 2020-09-16T09:23:01.0933922 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Tisha Dixit 1 Perumal Nithiarasu 0000-0002-4901-2980 2 S. Kumar 3 55184__18169__ec80870a8f4241579ee2305842b29312.pdf 55184.pdf 2020-09-16T09:24:38.3995727 Output 2191388 application/pdf Accepted Manuscript true 2021-09-21T00:00:00.0000000 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Numerical evaluation of additively manufactured lattice architectures for heat sink applications
spellingShingle Numerical evaluation of additively manufactured lattice architectures for heat sink applications
Perumal Nithiarasu
title_short Numerical evaluation of additively manufactured lattice architectures for heat sink applications
title_full Numerical evaluation of additively manufactured lattice architectures for heat sink applications
title_fullStr Numerical evaluation of additively manufactured lattice architectures for heat sink applications
title_full_unstemmed Numerical evaluation of additively manufactured lattice architectures for heat sink applications
title_sort Numerical evaluation of additively manufactured lattice architectures for heat sink applications
author_id_str_mv 3b28bf59358fc2b9bd9a46897dbfc92d
author_id_fullname_str_mv 3b28bf59358fc2b9bd9a46897dbfc92d_***_Perumal Nithiarasu
author Perumal Nithiarasu
author2 Tisha Dixit
Perumal Nithiarasu
S. Kumar
format Journal article
container_title International Journal of Thermal Sciences
container_volume 159
container_start_page 106607
publishDate 2021
institution Swansea University
issn 1290-0729
doi_str_mv 10.1016/j.ijthermalsci.2020.106607
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
document_store_str 1
active_str 0
description Tailoring the architectural characteristics of lattice materials at different length scales, from nano to macro, has become tenable with emerging advances in additive manufacturing. Cumulative needs of high heat dissipation rates and structural requirements along with lightweight constraints have led to the development of several heat sink fins with lattice architectures in heat exchange-applications. Here, we numerically investigate the potential of polymer-based 3D printed lattice architectures as extended heat transfer surfaces and examine the forced-convection characteristics of simple-cubic, body-centered-cubic and face-centered-cubic trusses as well as simple-cubic plate, and Kelvin and Octet periodic lattices with mesostructured architecture. All these lattices have a porosity of 77% (relative density ~) and surface area density in the range of . Thermal and hydraulic finite element studies were conducted for fluid flow over the lattice architectures for low Reynolds number in the range of and constant wall temperature conditions. The performance of different cell-topologies is characterized in terms of exit fluid temperature, heat transfer coefficient with respect to different reference surface areas, pressure drop per unit length, Colburn factor j, Fanning friction factor f and area goodness factor j/f. The study of the influence of thermal conductivity on heat transfer rate reveals that the polymer-based architected heat sinks perform close to their metallic counterparts when evaluated on per unit mass basis. Furthermore, body-centered-cubic truss, simple-cubic plate, and Kelvin and Octet lattice-cells were found to exhibit better thermal performance than some microchannel and open-cell foam heat sinks.
published_date 2021-01-01T04:09:13Z
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score 11.012678

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