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Constructal cooling channels for micro-channel heat sinks
This paper documents the geometric optimisation of a three-dimensional micro-channel heat sink. The objective is to minimise the peak temperature from the walls to the coolant fluid. The optimisation is performed numerically by using the finite volume method. The numerical simulation was carried out...
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Published in: | International journal of heat and mass transfer 2007-10, Vol.50 (21), p.4141-4150 |
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container_end_page | 4150 |
container_issue | 21 |
container_start_page | 4141 |
container_title | International journal of heat and mass transfer |
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creator | Bello-Ochende, T. Liebenberg, L. Meyer, J.P. |
description | This paper documents the geometric optimisation of a three-dimensional micro-channel heat sink. The objective is to minimise the peak temperature from the walls to the coolant fluid. The optimisation is performed numerically by using the finite volume method. The numerical simulation was carried out on a unit cell with volume ranging from 0.1
mm
3 to 0.9
mm
3 and pressure drop between 10
kPa and 75
kPa. The axial length of the micro-channel heat sink was fixed at 10
mm. The cross-sectional area of the micro-channel heat sink is free to morph with respect to the degree of freedoms provided by the aspect ratio and the solid volume fraction. The effect of the total solid volume fraction and the pressure drop on the aspect ratio, channel hydraulic diameter and peak temperature is investigated. The numerical results show that the degrees of freedom have a strong effect on the peak temperature and the maximum thermal conductance. The optimal geometric characteristics obtained numerically (the aspect ratio and the optimal channel shape (hydraulic diameter)) are reported and compared with those obtained from approximate relationships using scale analysis. The predicted trends are found to be in good agreement with the numerical results. |
doi_str_mv | 10.1016/j.ijheatmasstransfer.2007.02.019 |
format | article |
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mm
3 to 0.9
mm
3 and pressure drop between 10
kPa and 75
kPa. The axial length of the micro-channel heat sink was fixed at 10
mm. The cross-sectional area of the micro-channel heat sink is free to morph with respect to the degree of freedoms provided by the aspect ratio and the solid volume fraction. The effect of the total solid volume fraction and the pressure drop on the aspect ratio, channel hydraulic diameter and peak temperature is investigated. The numerical results show that the degrees of freedom have a strong effect on the peak temperature and the maximum thermal conductance. The optimal geometric characteristics obtained numerically (the aspect ratio and the optimal channel shape (hydraulic diameter)) are reported and compared with those obtained from approximate relationships using scale analysis. The predicted trends are found to be in good agreement with the numerical results.</description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/j.ijheatmasstransfer.2007.02.019</identifier><identifier>CODEN: IJHMAK</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Conductance ; Constructal ; Devices using thermal energy ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Heat exchangers (included heat transformers, condensers, cooling towers) ; Micro-channel heat sinks ; Optimal geometry</subject><ispartof>International journal of heat and mass transfer, 2007-10, Vol.50 (21), p.4141-4150</ispartof><rights>2007 Elsevier Ltd</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c469t-8d1d79760e4e7dfd7dabccd7c0720abc49a03fc1e3bc24bdd3c309245c26b1ba3</citedby><cites>FETCH-LOGICAL-c469t-8d1d79760e4e7dfd7dabccd7c0720abc49a03fc1e3bc24bdd3c309245c26b1ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18980466$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Bello-Ochende, T.</creatorcontrib><creatorcontrib>Liebenberg, L.</creatorcontrib><creatorcontrib>Meyer, J.P.</creatorcontrib><title>Constructal cooling channels for micro-channel heat sinks</title><title>International journal of heat and mass transfer</title><description>This paper documents the geometric optimisation of a three-dimensional micro-channel heat sink. The objective is to minimise the peak temperature from the walls to the coolant fluid. The optimisation is performed numerically by using the finite volume method. The numerical simulation was carried out on a unit cell with volume ranging from 0.1
mm
3 to 0.9
mm
3 and pressure drop between 10
kPa and 75
kPa. The axial length of the micro-channel heat sink was fixed at 10
mm. The cross-sectional area of the micro-channel heat sink is free to morph with respect to the degree of freedoms provided by the aspect ratio and the solid volume fraction. The effect of the total solid volume fraction and the pressure drop on the aspect ratio, channel hydraulic diameter and peak temperature is investigated. The numerical results show that the degrees of freedom have a strong effect on the peak temperature and the maximum thermal conductance. The optimal geometric characteristics obtained numerically (the aspect ratio and the optimal channel shape (hydraulic diameter)) are reported and compared with those obtained from approximate relationships using scale analysis. The predicted trends are found to be in good agreement with the numerical results.</description><subject>Applied sciences</subject><subject>Conductance</subject><subject>Constructal</subject><subject>Devices using thermal energy</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Heat exchangers (included heat transformers, condensers, cooling towers)</subject><subject>Micro-channel heat sinks</subject><subject>Optimal geometry</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqNkMtOwzAQRS0EEqXwD9mA2CSMnRDHO1DFU5XYwNpyxg51SJPiSZH4exy1Egs2rPzQ8b3jw9glh4wDL6_azLcrZ8a1IRqD6alxIRMAMgORAVcHbMYrqVLBK3XIZgBcpirncMxOiNrpCEU5Y2ox9PH9FkfTJTgMne_fE1yZvncdJc0QkrXHMKT7q2SqTMj3H3TKjhrTkTvbr3P2dn_3unhMly8PT4vbZYpFqca0stxKJUtwhZO2sdKaGtFKBCkgbgtlIG-Qu7xGUdTW5piDEsU1irLmtcnn7GKXuwnD59bRqNee0HWd6d2wJZ0DlEX8TgRvdmCclyi4Rm-CX5vwrTnoyZlu9V9nenKmQejoLEac77sMoemayKCn35xKVdFaGbnnHRcluS8fUwi969FZHxyO2g7-_6U_LfmQMQ</recordid><startdate>20071001</startdate><enddate>20071001</enddate><creator>Bello-Ochende, T.</creator><creator>Liebenberg, L.</creator><creator>Meyer, J.P.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20071001</creationdate><title>Constructal cooling channels for micro-channel heat sinks</title><author>Bello-Ochende, T. ; Liebenberg, L. ; Meyer, J.P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c469t-8d1d79760e4e7dfd7dabccd7c0720abc49a03fc1e3bc24bdd3c309245c26b1ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>Conductance</topic><topic>Constructal</topic><topic>Devices using thermal energy</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Heat exchangers (included heat transformers, condensers, cooling towers)</topic><topic>Micro-channel heat sinks</topic><topic>Optimal geometry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bello-Ochende, T.</creatorcontrib><creatorcontrib>Liebenberg, L.</creatorcontrib><creatorcontrib>Meyer, J.P.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of heat and mass transfer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bello-Ochende, T.</au><au>Liebenberg, L.</au><au>Meyer, J.P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Constructal cooling channels for micro-channel heat sinks</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2007-10-01</date><risdate>2007</risdate><volume>50</volume><issue>21</issue><spage>4141</spage><epage>4150</epage><pages>4141-4150</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><coden>IJHMAK</coden><abstract>This paper documents the geometric optimisation of a three-dimensional micro-channel heat sink. The objective is to minimise the peak temperature from the walls to the coolant fluid. The optimisation is performed numerically by using the finite volume method. The numerical simulation was carried out on a unit cell with volume ranging from 0.1
mm
3 to 0.9
mm
3 and pressure drop between 10
kPa and 75
kPa. The axial length of the micro-channel heat sink was fixed at 10
mm. The cross-sectional area of the micro-channel heat sink is free to morph with respect to the degree of freedoms provided by the aspect ratio and the solid volume fraction. The effect of the total solid volume fraction and the pressure drop on the aspect ratio, channel hydraulic diameter and peak temperature is investigated. The numerical results show that the degrees of freedom have a strong effect on the peak temperature and the maximum thermal conductance. The optimal geometric characteristics obtained numerically (the aspect ratio and the optimal channel shape (hydraulic diameter)) are reported and compared with those obtained from approximate relationships using scale analysis. The predicted trends are found to be in good agreement with the numerical results.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2007.02.019</doi><tpages>10</tpages></addata></record> |
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issn | 0017-9310 1879-2189 |
language | eng |
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source | ScienceDirect Freedom Collection |
subjects | Applied sciences Conductance Constructal Devices using thermal energy Energy Energy. Thermal use of fuels Exact sciences and technology Heat exchangers (included heat transformers, condensers, cooling towers) Micro-channel heat sinks Optimal geometry |
title | Constructal cooling channels for micro-channel heat sinks |
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