Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step
In this paper, the effect of opposite baffles on the flow field and the increase of forced heat transfer of non-Newtonian nanofluid flow in a laminar regime in a backward-facing step are investigated numerically. The finite volume method is used to solve the governing equations of flow and temperatu...
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REA Press
2021-12-01
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| Series: | Big Data and Computing Visions |
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| Online Access: | https://www.bidacv.com/article_143720_946b538c3116d44ffa7b5f6f301dabdd.pdf |
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| author | Kourosh Javaherdeh Mehdi Moslemi Motahare Mahmoodnezhad |
| author_facet | Kourosh Javaherdeh Mehdi Moslemi Motahare Mahmoodnezhad |
| author_sort | Kourosh Javaherdeh |
| collection | DOAJ |
| description | In this paper, the effect of opposite baffles on the flow field and the increase of forced heat transfer of non-Newtonian nanofluid flow in a laminar regime in a backward-facing step are investigated numerically. The finite volume method is used to solve the governing equations of flow and temperature. Besides, the impact of geometric parameters such as horizontal distance between baffles to the edge of the stairs and its numbers, like Reynolds number, nanoparticle volume fraction, and the non-Newtonian fluid behavior on the flow field and heat transfer have been examined. Results demonstrate that using non-Newtonian fluid instead of Newtonian fluid enhances heat transfer and reattachment length. Raising the Reynolds number and the nanofluid volume fraction causes the mean Nusselt numbers and the Performance Evaluation Index to increase. The outcomes indicate that using a pair of opposite baffles must be more beneficial than the other number of baffles. |
| format | Article |
| id | doaj-art-57db3a326b1841e0bd8dd25359ee86f0 |
| institution | Kabale University |
| issn | 2783-4956 2821-014X |
| language | English |
| publishDate | 2021-12-01 |
| publisher | REA Press |
| record_format | Article |
| series | Big Data and Computing Visions |
| spelling | doaj-art-57db3a326b1841e0bd8dd25359ee86f02025-01-30T12:21:33ZengREA PressBig Data and Computing Visions2783-49562821-014X2021-12-011421623110.22105/bdcv.2022.325705.1042143720Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing stepKourosh Javaherdeh0Mehdi Moslemi1Motahare Mahmoodnezhad2Faculty of Mechanical Engineering, University of Guilan, Rasht, Iran.Department of Mechanical Engineering, Ayandegan Institute of Higher Education, Tonekabon, Iran.Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran.In this paper, the effect of opposite baffles on the flow field and the increase of forced heat transfer of non-Newtonian nanofluid flow in a laminar regime in a backward-facing step are investigated numerically. The finite volume method is used to solve the governing equations of flow and temperature. Besides, the impact of geometric parameters such as horizontal distance between baffles to the edge of the stairs and its numbers, like Reynolds number, nanoparticle volume fraction, and the non-Newtonian fluid behavior on the flow field and heat transfer have been examined. Results demonstrate that using non-Newtonian fluid instead of Newtonian fluid enhances heat transfer and reattachment length. Raising the Reynolds number and the nanofluid volume fraction causes the mean Nusselt numbers and the Performance Evaluation Index to increase. The outcomes indicate that using a pair of opposite baffles must be more beneficial than the other number of baffles.https://www.bidacv.com/article_143720_946b538c3116d44ffa7b5f6f301dabdd.pdfbackward facing stepopposite bafflesnon-newtonian nanofluidheat transfer enhancementnumerical analysis |
| spellingShingle | Kourosh Javaherdeh Mehdi Moslemi Motahare Mahmoodnezhad Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step Big Data and Computing Visions backward facing step opposite baffles non-newtonian nanofluid heat transfer enhancement numerical analysis |
| title | Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step |
| title_full | Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step |
| title_fullStr | Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step |
| title_full_unstemmed | Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step |
| title_short | Numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non-newtonian Nano fluid through a backward facing step |
| title_sort | numerical analysis of the effect of opposite baffles on the heat transfer enhancement of non newtonian nano fluid through a backward facing step |
| topic | backward facing step opposite baffles non-newtonian nanofluid heat transfer enhancement numerical analysis |
| url | https://www.bidacv.com/article_143720_946b538c3116d44ffa7b5f6f301dabdd.pdf |
| work_keys_str_mv | AT kouroshjavaherdeh numericalanalysisoftheeffectofoppositebafflesontheheattransferenhancementofnonnewtoniannanofluidthroughabackwardfacingstep AT mehdimoslemi numericalanalysisoftheeffectofoppositebafflesontheheattransferenhancementofnonnewtoniannanofluidthroughabackwardfacingstep AT motaharemahmoodnezhad numericalanalysisoftheeffectofoppositebafflesontheheattransferenhancementofnonnewtoniannanofluidthroughabackwardfacingstep |