Optimal design with entropy generation minimization approach in combined natural convection with surface radiation in a two‐dimensional enclosure
Analysis of combined natural convection with surface radiation in a two‐dimensional enclosure is carried out. To search the optimal location of the heat source, the entropy generation minimization approach and conventional heat transfer parameters are used and compared. Air is considered as an incom...
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| Veröffentlicht in: | Heat transfer, Asian research Asian research, 2019-12, Vol.48 (8), p.4049-4073 |
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| container_title | Heat transfer, Asian research |
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| creator | Dashti, Mohammad Amin Safavinejad, Ali |
| description | Analysis of combined natural convection with surface radiation in a two‐dimensional enclosure is carried out. To search the optimal location of the heat source, the entropy generation minimization approach and conventional heat transfer parameters are used and compared. Air is considered as an incompressible fluid and transparent media filling the enclosure with a steady and laminar regime. The enclosure internal surfaces are also gray, opaque, and diffused. The governing equations are solved using the finite difference approach. The results show that with increase in emissivity, entropy generation decreases, and as the Rayleigh number increases, the rate of entropy generation increases. Furthermore, optimum design with the maximum dimensionless temperature and convective Nusselt number confirms the applicability of the second law for optimal design. |
| doi_str_mv | 10.1002/htj.21582 |
| format | Article |
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To search the optimal location of the heat source, the entropy generation minimization approach and conventional heat transfer parameters are used and compared. Air is considered as an incompressible fluid and transparent media filling the enclosure with a steady and laminar regime. The enclosure internal surfaces are also gray, opaque, and diffused. The governing equations are solved using the finite difference approach. The results show that with increase in emissivity, entropy generation decreases, and as the Rayleigh number increases, the rate of entropy generation increases. Furthermore, optimum design with the maximum dimensionless temperature and convective Nusselt number confirms the applicability of the second law for optimal design.</description><identifier>ISSN: 1099-2871</identifier><identifier>EISSN: 1523-1496</identifier><identifier>DOI: 10.1002/htj.21582</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc</publisher><subject>Aerodynamics ; constant flux heat source ; Design optimization ; Dimensional analysis ; Enclosures ; Entropy ; entropy generation minimization ; Finite difference method ; Fluid dynamics ; Fluid flow ; Free convection ; Incompressible flow ; Incompressible fluids ; natural convection ; optimal search ; Optimization ; surface radiation ; Viscosity</subject><ispartof>Heat transfer, Asian research, 2019-12, Vol.48 (8), p.4049-4073</ispartof><rights>2019 Wiley Periodicals, Inc.</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3342-98a860b22c417dffcec59fdb97a39fba5b65552e23fbd1b174a72232e3db59833</citedby><cites>FETCH-LOGICAL-c3342-98a860b22c417dffcec59fdb97a39fba5b65552e23fbd1b174a72232e3db59833</cites><orcidid>0000-0002-6266-377X ; 0000-0002-5867-3895</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fhtj.21582$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fhtj.21582$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids></links><search><creatorcontrib>Dashti, Mohammad Amin</creatorcontrib><creatorcontrib>Safavinejad, Ali</creatorcontrib><title>Optimal design with entropy generation minimization approach in combined natural convection with surface radiation in a two‐dimensional enclosure</title><title>Heat transfer, Asian research</title><description>Analysis of combined natural convection with surface radiation in a two‐dimensional enclosure is carried out. 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Furthermore, optimum design with the maximum dimensionless temperature and convective Nusselt number confirms the applicability of the second law for optimal design.</description><subject>Aerodynamics</subject><subject>constant flux heat source</subject><subject>Design optimization</subject><subject>Dimensional analysis</subject><subject>Enclosures</subject><subject>Entropy</subject><subject>entropy generation minimization</subject><subject>Finite difference method</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Free convection</subject><subject>Incompressible flow</subject><subject>Incompressible fluids</subject><subject>natural convection</subject><subject>optimal search</subject><subject>Optimization</subject><subject>surface radiation</subject><subject>Viscosity</subject><issn>1099-2871</issn><issn>1523-1496</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp1kLtOwzAUhiMEEqUw8AaWmBjS-pKbR1QBBVXqUubIcU5aV4kdbJeqTDwCEm_Ik2AaVqZz0ff_OuePomuCJwRjOt347YSStKAn0YiklMUk4dlp6DHnMS1ych5dOLfFmORFkY-ir2XvVSdaVINTa432ym8QaG9Nf0Br0GCFV0ajTmnVqfdhEH1vjZAbpDSSpquUhhpp4Xc2GEmj30AeuaOZ29lGSEBW1GqQB5VAfm--Pz5r1YF2YRmEoGVrAg2X0VkjWgdXf3UcvTzcr2bzeLF8fJrdLWLJWEJjXogiwxWlMiF53TQSZMqbuuK5YLypRFplaZpSoKypalKRPBE5pYwCq6uUF4yNo5vBN3zzugPny63Z2XCKKynDnHKGMxyo24GS1jhnoSl7GxKzh5Lg8jfzMmReHjMP7HRg96qFw_9gOV89D4ofz2SIdA</recordid><startdate>201912</startdate><enddate>201912</enddate><creator>Dashti, Mohammad Amin</creator><creator>Safavinejad, Ali</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-6266-377X</orcidid><orcidid>https://orcid.org/0000-0002-5867-3895</orcidid></search><sort><creationdate>201912</creationdate><title>Optimal design with entropy generation minimization approach in combined natural convection with surface radiation in a two‐dimensional enclosure</title><author>Dashti, Mohammad Amin ; Safavinejad, Ali</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3342-98a860b22c417dffcec59fdb97a39fba5b65552e23fbd1b174a72232e3db59833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Aerodynamics</topic><topic>constant flux heat source</topic><topic>Design optimization</topic><topic>Dimensional analysis</topic><topic>Enclosures</topic><topic>Entropy</topic><topic>entropy generation minimization</topic><topic>Finite difference method</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Free convection</topic><topic>Incompressible flow</topic><topic>Incompressible fluids</topic><topic>natural convection</topic><topic>optimal search</topic><topic>Optimization</topic><topic>surface radiation</topic><topic>Viscosity</topic><toplevel>online_resources</toplevel><creatorcontrib>Dashti, Mohammad Amin</creatorcontrib><creatorcontrib>Safavinejad, Ali</creatorcontrib><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>Heat transfer, Asian research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dashti, Mohammad Amin</au><au>Safavinejad, Ali</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimal design with entropy generation minimization approach in combined natural convection with surface radiation in a two‐dimensional enclosure</atitle><jtitle>Heat transfer, Asian research</jtitle><date>2019-12</date><risdate>2019</risdate><volume>48</volume><issue>8</issue><spage>4049</spage><epage>4073</epage><pages>4049-4073</pages><issn>1099-2871</issn><eissn>1523-1496</eissn><abstract>Analysis of combined natural convection with surface radiation in a two‐dimensional enclosure is carried out. To search the optimal location of the heat source, the entropy generation minimization approach and conventional heat transfer parameters are used and compared. Air is considered as an incompressible fluid and transparent media filling the enclosure with a steady and laminar regime. The enclosure internal surfaces are also gray, opaque, and diffused. The governing equations are solved using the finite difference approach. The results show that with increase in emissivity, entropy generation decreases, and as the Rayleigh number increases, the rate of entropy generation increases. 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| ispartof | Heat transfer, Asian research, 2019-12, Vol.48 (8), p.4049-4073 |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Aerodynamics constant flux heat source Design optimization Dimensional analysis Enclosures Entropy entropy generation minimization Finite difference method Fluid dynamics Fluid flow Free convection Incompressible flow Incompressible fluids natural convection optimal search Optimization surface radiation Viscosity |
| title | Optimal design with entropy generation minimization approach in combined natural convection with surface radiation in a two‐dimensional enclosure |
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