Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube
In the present study, the thermal and rheological behavior of power-law non-Newtonian CMC-based CuO nanofluid in a tube is studied using ANSYS FLUENT software. Constant heat flux of 6000 W/m2 is subjected to the tube walls and the viscosity of nanofluid is assumed to be a function of shear rate, and...
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| Format: | Article |
| Language: | English |
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Semnan University
2020-10-01
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| Series: | Journal of Heat and Mass Transfer Research |
| Subjects: | |
| Online Access: | https://jhmtr.semnan.ac.ir/article_4545_aaa9653ae0ffccd976b4c32835d5470f.pdf |
| _version_ | 1797259625529081856 |
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| author | Morteza Bayareh Nader Afshar |
| author_facet | Morteza Bayareh Nader Afshar |
| author_sort | Morteza Bayareh |
| collection | DOAJ |
| description | In the present study, the thermal and rheological behavior of power-law non-Newtonian CMC-based CuO nanofluid in a tube is studied using ANSYS FLUENT software. Constant heat flux of 6000 W/m2 is subjected to the tube walls and the viscosity of nanofluid is assumed to be a function of shear rate, and temperature simultaneously. Two velocity profiles are considered as an inlet boundary condition: fully developed velocity and uniform velocity. Volume fractions of 0%-4%, and the Reynolds numbers of 600-1500 are considered in the simulations. For both velocity profiles, temperature and shear rate have considerable influence on the viscosity. Local heat transfer coefficient along the tube increases with the volume fraction, however, volume fractions less than 1.5% has an effect on local heat transfer slightly. It is revealed that as the Reynolds number enhances, local heat transfer and the average Nusselt number decrease. In conflict with previous investigations, the present results show that average Nusselt number is reduced by increasing the volume fraction of nanoparticles. |
| first_indexed | 2024-04-24T23:12:24Z |
| format | Article |
| id | doaj.art-362ea34b7d134fa289fdcbfe57f757c6 |
| institution | Directory Open Access Journal |
| issn | 2345-508X 2383-3068 |
| language | English |
| last_indexed | 2024-04-24T23:12:24Z |
| publishDate | 2020-10-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Heat and Mass Transfer Research |
| spelling | doaj.art-362ea34b7d134fa289fdcbfe57f757c62024-03-17T08:04:10ZengSemnan UniversityJournal of Heat and Mass Transfer Research2345-508X2383-30682020-10-017215516310.22075/jhmtr.2020.19236.12624545Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tubeMorteza Bayareh0Nader Afshar1Department of Mechanical engineering, Shahrekord UniversityEsfahan Oil Refinery Company, IsfahanIn the present study, the thermal and rheological behavior of power-law non-Newtonian CMC-based CuO nanofluid in a tube is studied using ANSYS FLUENT software. Constant heat flux of 6000 W/m2 is subjected to the tube walls and the viscosity of nanofluid is assumed to be a function of shear rate, and temperature simultaneously. Two velocity profiles are considered as an inlet boundary condition: fully developed velocity and uniform velocity. Volume fractions of 0%-4%, and the Reynolds numbers of 600-1500 are considered in the simulations. For both velocity profiles, temperature and shear rate have considerable influence on the viscosity. Local heat transfer coefficient along the tube increases with the volume fraction, however, volume fractions less than 1.5% has an effect on local heat transfer slightly. It is revealed that as the Reynolds number enhances, local heat transfer and the average Nusselt number decrease. In conflict with previous investigations, the present results show that average Nusselt number is reduced by increasing the volume fraction of nanoparticles.https://jhmtr.semnan.ac.ir/article_4545_aaa9653ae0ffccd976b4c32835d5470f.pdfforced convective heat transferpower-law non-newtonian nanofluidreynolds numbernusselt numberconstant heat flux |
| spellingShingle | Morteza Bayareh Nader Afshar Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube Journal of Heat and Mass Transfer Research forced convective heat transfer power-law non-newtonian nanofluid reynolds number nusselt number constant heat flux |
| title | Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube |
| title_full | Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube |
| title_fullStr | Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube |
| title_full_unstemmed | Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube |
| title_short | Forced convective heat transfer of non-Newtonian CMC-based CuO nanofluid in a tube |
| title_sort | forced convective heat transfer of non newtonian cmc based cuo nanofluid in a tube |
| topic | forced convective heat transfer power-law non-newtonian nanofluid reynolds number nusselt number constant heat flux |
| url | https://jhmtr.semnan.ac.ir/article_4545_aaa9653ae0ffccd976b4c32835d5470f.pdf |
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