A critical synthesis of thermophysical characteristics of nanofluids
A critical synthesis of the variants within the thermophysical properties of nanofluids is presented in this work. The experimental results for the effective thermal conductivity and viscosity reported by several authors are in disagreement. Theoretical and experimental studies are essential to clar...
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| Veröffentlicht in: | International journal of heat and mass transfer 2011-09, Vol.54 (19), p.4410-4428 |
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| container_title | International journal of heat and mass transfer |
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| creator | Khanafer, Khalil Vafai, Kambiz |
| description | A critical synthesis of the variants within the thermophysical properties of nanofluids is presented in this work. The experimental results for the effective thermal conductivity and viscosity reported by several authors are in disagreement. Theoretical and experimental studies are essential to clarify the discrepancies in the results and in proper understanding of heat transfer enhancement characteristics of nanofluids. At room temperature, it is illustrated that the results of the effective thermal conductivity and viscosity of nanofluids can be estimated using the classical equations at low volume fractions. However, the classical models fail to estimate the effective thermal conductivity and viscosity of nanofluids at various temperatures. This study shows that it is not clear which analytical model should be used to describe the thermal conductivity of nanofluids. Additional theoretical and experimental research studies are required to clarify the mechanisms responsible for heat transfer enhancement in nanofluids. Correlations for effective thermal conductivity and viscosity are synthesized and developed in this study in terms of pertinent physical parameters based on the reported experimental data. |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2011.04.048 |
| format | Article |
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The experimental results for the effective thermal conductivity and viscosity reported by several authors are in disagreement. Theoretical and experimental studies are essential to clarify the discrepancies in the results and in proper understanding of heat transfer enhancement characteristics of nanofluids. At room temperature, it is illustrated that the results of the effective thermal conductivity and viscosity of nanofluids can be estimated using the classical equations at low volume fractions. However, the classical models fail to estimate the effective thermal conductivity and viscosity of nanofluids at various temperatures. This study shows that it is not clear which analytical model should be used to describe the thermal conductivity of nanofluids. Additional theoretical and experimental research studies are required to clarify the mechanisms responsible for heat transfer enhancement in nanofluids. 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The experimental results for the effective thermal conductivity and viscosity reported by several authors are in disagreement. Theoretical and experimental studies are essential to clarify the discrepancies in the results and in proper understanding of heat transfer enhancement characteristics of nanofluids. At room temperature, it is illustrated that the results of the effective thermal conductivity and viscosity of nanofluids can be estimated using the classical equations at low volume fractions. However, the classical models fail to estimate the effective thermal conductivity and viscosity of nanofluids at various temperatures. This study shows that it is not clear which analytical model should be used to describe the thermal conductivity of nanofluids. Additional theoretical and experimental research studies are required to clarify the mechanisms responsible for heat transfer enhancement in nanofluids. Correlations for effective thermal conductivity and viscosity are synthesized and developed in this study in terms of pertinent physical parameters based on the reported experimental data.</description><subject>Applied sciences</subject><subject>Boiling</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Free and forced convection</subject><subject>General and physical chemistry</subject><subject>Heat transfer</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Nanocomposites</subject><subject>Nanofluids</subject><subject>Nanomaterials</subject><subject>Nanostructure</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physics</subject><subject>Review</subject><subject>Surface tension</subject><subject>Theoretical studies. Data and constants. Metering</subject><subject>Thermal conductivity</subject><subject>Thermal properties of condensed matter</subject><subject>Thermal properties of small particles, nanocrystals, nanotubes</subject><subject>Thermophyscical properties</subject><subject>Viscosity</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqNkE1LAzEQhoMoWKv_oRexl10zSTbZvVnqNwUveg5pNqEp292a2Qr996YfeBFEGJgJeXiHeQgZA82Bgrxd5mG5cKZfGcQ-mha9izmjADkVqcoTMoBSVRmDsjolA0pBZRUHek4uEJe7JxVyQO4nIxtDH6xpRrht-4XDgKPOj9IUV916scX9n12YaGzvYsAE74nWtJ1vNqHGS3LmTYPu6tiH5OPx4X36nM3enl6mk1lmC0H7zJcSKiuEU_V87uXcFVwyxrj0FZdKMipAloyXBqrCCuBQF0KpkiplBLNzwYfk5pC7jt3nxmGvVwGtaxrTum6DukpiinRkkcjxnyRIBZxVQtCE3h1QGzvE6Lxex7AycauB6p1qvdS_Veudak1FqjJFXB-3GUyyfGJswJ8cJjiVKl02JK8HziVJXyGloA2uta4O0dle1134_9JvLR2gGQ</recordid><startdate>20110901</startdate><enddate>20110901</enddate><creator>Khanafer, Khalil</creator><creator>Vafai, Kambiz</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>20110901</creationdate><title>A critical synthesis of thermophysical characteristics of nanofluids</title><author>Khanafer, Khalil ; Vafai, Kambiz</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c540t-f8619c44e7dbbf6be53622236f93676204168238a195c4131d54778077a42cb43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Boiling</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Free and forced convection</topic><topic>General and physical chemistry</topic><topic>Heat transfer</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Nanocomposites</topic><topic>Nanofluids</topic><topic>Nanomaterials</topic><topic>Nanostructure</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physics</topic><topic>Review</topic><topic>Surface tension</topic><topic>Theoretical studies. Data and constants. Metering</topic><topic>Thermal conductivity</topic><topic>Thermal properties of condensed matter</topic><topic>Thermal properties of small particles, nanocrystals, nanotubes</topic><topic>Thermophyscical properties</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Khanafer, Khalil</creatorcontrib><creatorcontrib>Vafai, Kambiz</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>Khanafer, Khalil</au><au>Vafai, Kambiz</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A critical synthesis of thermophysical characteristics of nanofluids</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2011-09-01</date><risdate>2011</risdate><volume>54</volume><issue>19</issue><spage>4410</spage><epage>4428</epage><pages>4410-4428</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><coden>IJHMAK</coden><abstract>A critical synthesis of the variants within the thermophysical properties of nanofluids is presented in this work. The experimental results for the effective thermal conductivity and viscosity reported by several authors are in disagreement. Theoretical and experimental studies are essential to clarify the discrepancies in the results and in proper understanding of heat transfer enhancement characteristics of nanofluids. At room temperature, it is illustrated that the results of the effective thermal conductivity and viscosity of nanofluids can be estimated using the classical equations at low volume fractions. However, the classical models fail to estimate the effective thermal conductivity and viscosity of nanofluids at various temperatures. This study shows that it is not clear which analytical model should be used to describe the thermal conductivity of nanofluids. Additional theoretical and experimental research studies are required to clarify the mechanisms responsible for heat transfer enhancement in nanofluids. Correlations for effective thermal conductivity and viscosity are synthesized and developed in this study in terms of pertinent physical parameters based on the reported experimental data.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2011.04.048</doi><tpages>19</tpages></addata></record> |
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| ispartof | International journal of heat and mass transfer, 2011-09, Vol.54 (19), p.4410-4428 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Boiling Chemistry Colloidal state and disperse state Condensed matter: structure, mechanical and thermal properties Energy Energy. Thermal use of fuels Exact sciences and technology Free and forced convection General and physical chemistry Heat transfer Mathematical analysis Mathematical models Nanocomposites Nanofluids Nanomaterials Nanostructure Physical and chemical studies. Granulometry. Electrokinetic phenomena Physics Review Surface tension Theoretical studies. Data and constants. Metering Thermal conductivity Thermal properties of condensed matter Thermal properties of small particles, nanocrystals, nanotubes Thermophyscical properties Viscosity |
| title | A critical synthesis of thermophysical characteristics of nanofluids |
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