Entropy analysis of radioactive rotating nanofluid with thermal slip
•Entropy analysis of radioactive rotating nano fluid is presented.•Copper oxide nanoparticles proved to be most efficient in terms of least entropy generation.•Non dimensional entropy function drops with thermal slip and thermal radiation parameter.•Bejan number decreases with an increase in prescri...
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| Veröffentlicht in: | Applied thermal engineering 2017-02, Vol.112, p.832-840 |
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| creator | Rehman, Aziz Ur Mehmood, Rashid Nadeem, S. |
| description | •Entropy analysis of radioactive rotating nano fluid is presented.•Copper oxide nanoparticles proved to be most efficient in terms of least entropy generation.•Non dimensional entropy function drops with thermal slip and thermal radiation parameter.•Bejan number decreases with an increase in prescribed thermal slip at the surface.•Local heat flux drops with an increase in thermal radiation for all three types of nanoparticles.
Nano fluids are highly capable heat transfer agents with marginal entropy generation and thus are considered to be proficient cooling medium. Keeping in view, the present study is related to entropy analysis of a radioactive rotating nano fluid with prescribed thermal slip at the horizontal surface. The flow problem consists of continuity, linear momentum and energy equations. Such flows find applications in several technological devices such as rotational viscometer, liquid metal pumping, gas-solid fluidized bed and in centrifugal machinery. Three types of nano particles namely copper oxide (CuO), silver (Ag) and gold (Au) are considered with water based fluid. The governing equations of nanofluid are simplified by means of appropriate similarity transformations. Numerical solutions with high precision are obtained using eminent shooting scheme. Bejan number is plotted to present a comparative analysis of entropy generation due to heat transfer and fluid friction. It is found that Bejan number is a decreasing function of nanoparticle volume fraction. The obtained results also reveal that more entropy is generated in the presence of nanoparticles compare to usual fluid flow. Moreover gold nanoparticles generated highest entropy compare to silver and copper oxide nano particles. Thus it is suggested that copper oxide nano particles can be used to enhance heat transfer rate with minimal entropy generation. A suitable agreement with existing published literature is made and an excellent agreement is observed for the limiting case. |
| doi_str_mv | 10.1016/j.applthermaleng.2016.10.150 |
| format | Article |
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Nano fluids are highly capable heat transfer agents with marginal entropy generation and thus are considered to be proficient cooling medium. Keeping in view, the present study is related to entropy analysis of a radioactive rotating nano fluid with prescribed thermal slip at the horizontal surface. The flow problem consists of continuity, linear momentum and energy equations. Such flows find applications in several technological devices such as rotational viscometer, liquid metal pumping, gas-solid fluidized bed and in centrifugal machinery. Three types of nano particles namely copper oxide (CuO), silver (Ag) and gold (Au) are considered with water based fluid. The governing equations of nanofluid are simplified by means of appropriate similarity transformations. Numerical solutions with high precision are obtained using eminent shooting scheme. Bejan number is plotted to present a comparative analysis of entropy generation due to heat transfer and fluid friction. It is found that Bejan number is a decreasing function of nanoparticle volume fraction. The obtained results also reveal that more entropy is generated in the presence of nanoparticles compare to usual fluid flow. Moreover gold nanoparticles generated highest entropy compare to silver and copper oxide nano particles. Thus it is suggested that copper oxide nano particles can be used to enhance heat transfer rate with minimal entropy generation. A suitable agreement with existing published literature is made and an excellent agreement is observed for the limiting case.</description><identifier>ISSN: 1359-4311</identifier><identifier>EISSN: 1873-5606</identifier><identifier>DOI: 10.1016/j.applthermaleng.2016.10.150</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Centrifugal pumps ; Computational fluid dynamics ; Concentration (composition) ; Continuity (mathematics) ; Cooling ; Copper oxides ; Entropy ; Fluid flow ; Fluid friction ; Fluidized beds ; Gold ; Heat transfer ; Machinery and equipment ; Nano fluid ; Nanofluids ; Nanoparticles ; Pumping ; Rotating flow ; Rotating fluids ; Silver ; Similarity ; Slip ; Studies ; Thermal slip</subject><ispartof>Applied thermal engineering, 2017-02, Vol.112, p.832-840</ispartof><rights>2016 Elsevier Ltd</rights><rights>Copyright Elsevier BV Feb 5, 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c428t-40884c60db6a9f36bd2ed9a0ebbe4c5f3cfdbaf33f46587a5f19935fc2c71c9e3</citedby><cites>FETCH-LOGICAL-c428t-40884c60db6a9f36bd2ed9a0ebbe4c5f3cfdbaf33f46587a5f19935fc2c71c9e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.applthermaleng.2016.10.150$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Rehman, Aziz Ur</creatorcontrib><creatorcontrib>Mehmood, Rashid</creatorcontrib><creatorcontrib>Nadeem, S.</creatorcontrib><title>Entropy analysis of radioactive rotating nanofluid with thermal slip</title><title>Applied thermal engineering</title><description>•Entropy analysis of radioactive rotating nano fluid is presented.•Copper oxide nanoparticles proved to be most efficient in terms of least entropy generation.•Non dimensional entropy function drops with thermal slip and thermal radiation parameter.•Bejan number decreases with an increase in prescribed thermal slip at the surface.•Local heat flux drops with an increase in thermal radiation for all three types of nanoparticles.
Nano fluids are highly capable heat transfer agents with marginal entropy generation and thus are considered to be proficient cooling medium. Keeping in view, the present study is related to entropy analysis of a radioactive rotating nano fluid with prescribed thermal slip at the horizontal surface. The flow problem consists of continuity, linear momentum and energy equations. Such flows find applications in several technological devices such as rotational viscometer, liquid metal pumping, gas-solid fluidized bed and in centrifugal machinery. Three types of nano particles namely copper oxide (CuO), silver (Ag) and gold (Au) are considered with water based fluid. The governing equations of nanofluid are simplified by means of appropriate similarity transformations. Numerical solutions with high precision are obtained using eminent shooting scheme. Bejan number is plotted to present a comparative analysis of entropy generation due to heat transfer and fluid friction. It is found that Bejan number is a decreasing function of nanoparticle volume fraction. The obtained results also reveal that more entropy is generated in the presence of nanoparticles compare to usual fluid flow. Moreover gold nanoparticles generated highest entropy compare to silver and copper oxide nano particles. Thus it is suggested that copper oxide nano particles can be used to enhance heat transfer rate with minimal entropy generation. A suitable agreement with existing published literature is made and an excellent agreement is observed for the limiting case.</description><subject>Centrifugal pumps</subject><subject>Computational fluid dynamics</subject><subject>Concentration (composition)</subject><subject>Continuity (mathematics)</subject><subject>Cooling</subject><subject>Copper oxides</subject><subject>Entropy</subject><subject>Fluid flow</subject><subject>Fluid friction</subject><subject>Fluidized beds</subject><subject>Gold</subject><subject>Heat transfer</subject><subject>Machinery and equipment</subject><subject>Nano fluid</subject><subject>Nanofluids</subject><subject>Nanoparticles</subject><subject>Pumping</subject><subject>Rotating flow</subject><subject>Rotating fluids</subject><subject>Silver</subject><subject>Similarity</subject><subject>Slip</subject><subject>Studies</subject><subject>Thermal slip</subject><issn>1359-4311</issn><issn>1873-5606</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqNUDtPwzAQthBIlMJ_sARrgh3HeUgsqLSAVIkFZsuxz62jNA62W9R_35R2YWO6032Pu_sQeqAkpYQWj20qh6GLa_Ab2UG_SrNxmh5RTi7QhFYlS3hBisuxZ7xOckbpNboJoSWEZlWZT9DLvI_eDXsse9ntgw3YGeyltk6qaHeAvYsy2n6Fe9k7022txj82rvF5Kw6dHW7RlZFdgLtznaKvxfxz9pYsP17fZ8_LROVZFZOcVFWuCqKbQtaGFY3OQNeSQNNArrhhyuhGGsZMXvCqlNzQumbcqEyVVNXApuj-5Dt4972FEEXrtn48PAhaZ5yWhJNqZD2dWMq7EDwYMXi7kX4vKBHH3EQr_uYmjrn9opyM8sVJDuMnOwteBGWhV6CtBxWFdvZ_RgetvYEV</recordid><startdate>20170205</startdate><enddate>20170205</enddate><creator>Rehman, Aziz Ur</creator><creator>Mehmood, Rashid</creator><creator>Nadeem, S.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20170205</creationdate><title>Entropy analysis of radioactive rotating nanofluid with thermal slip</title><author>Rehman, Aziz Ur ; Mehmood, Rashid ; Nadeem, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c428t-40884c60db6a9f36bd2ed9a0ebbe4c5f3cfdbaf33f46587a5f19935fc2c71c9e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Centrifugal pumps</topic><topic>Computational fluid dynamics</topic><topic>Concentration (composition)</topic><topic>Continuity (mathematics)</topic><topic>Cooling</topic><topic>Copper oxides</topic><topic>Entropy</topic><topic>Fluid flow</topic><topic>Fluid friction</topic><topic>Fluidized beds</topic><topic>Gold</topic><topic>Heat transfer</topic><topic>Machinery and equipment</topic><topic>Nano fluid</topic><topic>Nanofluids</topic><topic>Nanoparticles</topic><topic>Pumping</topic><topic>Rotating flow</topic><topic>Rotating fluids</topic><topic>Silver</topic><topic>Similarity</topic><topic>Slip</topic><topic>Studies</topic><topic>Thermal slip</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rehman, Aziz Ur</creatorcontrib><creatorcontrib>Mehmood, Rashid</creatorcontrib><creatorcontrib>Nadeem, S.</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Applied thermal engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rehman, Aziz Ur</au><au>Mehmood, Rashid</au><au>Nadeem, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Entropy analysis of radioactive rotating nanofluid with thermal slip</atitle><jtitle>Applied thermal engineering</jtitle><date>2017-02-05</date><risdate>2017</risdate><volume>112</volume><spage>832</spage><epage>840</epage><pages>832-840</pages><issn>1359-4311</issn><eissn>1873-5606</eissn><abstract>•Entropy analysis of radioactive rotating nano fluid is presented.•Copper oxide nanoparticles proved to be most efficient in terms of least entropy generation.•Non dimensional entropy function drops with thermal slip and thermal radiation parameter.•Bejan number decreases with an increase in prescribed thermal slip at the surface.•Local heat flux drops with an increase in thermal radiation for all three types of nanoparticles.
Nano fluids are highly capable heat transfer agents with marginal entropy generation and thus are considered to be proficient cooling medium. Keeping in view, the present study is related to entropy analysis of a radioactive rotating nano fluid with prescribed thermal slip at the horizontal surface. The flow problem consists of continuity, linear momentum and energy equations. Such flows find applications in several technological devices such as rotational viscometer, liquid metal pumping, gas-solid fluidized bed and in centrifugal machinery. Three types of nano particles namely copper oxide (CuO), silver (Ag) and gold (Au) are considered with water based fluid. The governing equations of nanofluid are simplified by means of appropriate similarity transformations. Numerical solutions with high precision are obtained using eminent shooting scheme. Bejan number is plotted to present a comparative analysis of entropy generation due to heat transfer and fluid friction. It is found that Bejan number is a decreasing function of nanoparticle volume fraction. The obtained results also reveal that more entropy is generated in the presence of nanoparticles compare to usual fluid flow. Moreover gold nanoparticles generated highest entropy compare to silver and copper oxide nano particles. Thus it is suggested that copper oxide nano particles can be used to enhance heat transfer rate with minimal entropy generation. A suitable agreement with existing published literature is made and an excellent agreement is observed for the limiting case.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.applthermaleng.2016.10.150</doi><tpages>9</tpages></addata></record> |
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| ispartof | Applied thermal engineering, 2017-02, Vol.112, p.832-840 |
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| subjects | Centrifugal pumps Computational fluid dynamics Concentration (composition) Continuity (mathematics) Cooling Copper oxides Entropy Fluid flow Fluid friction Fluidized beds Gold Heat transfer Machinery and equipment Nano fluid Nanofluids Nanoparticles Pumping Rotating flow Rotating fluids Silver Similarity Slip Studies Thermal slip |
| title | Entropy analysis of radioactive rotating nanofluid with thermal slip |
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