Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid
Natural convection heat transfer in two-dimensional region formed by constant heat flux horizontal flat tube concentrically located in cooled horizontal cylinder was studied numerically by using nanofluid. The model solved using the FLUENT CFD package. The numerical simulations covered a range of hy...
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Elsevier Ltd
2023
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| author | Alawi O.A. Sidik N.A.C. Dawood H.K. |
| author2 | 56108584300 |
| author_facet | 56108584300 Alawi O.A. Sidik N.A.C. Dawood H.K. |
| author_sort | Alawi O.A. |
| building | UNITEN Library |
| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Natural convection heat transfer in two-dimensional region formed by constant heat flux horizontal flat tube concentrically located in cooled horizontal cylinder was studied numerically by using nanofluid. The model solved using the FLUENT CFD package. The numerical simulations covered a range of hydraulic radius ratio (5, 7.5, and 10) at orientation angles from 0° up to 90°. The results showed that the average Nusselt number increases with hydraulic radius ratio, orientation angles and Rayleigh number, as well as enhancement ratio for Nusselt number at orientation angle 90° and hydraulic radius ratio 7.5 is equal to 24.87%. Both the nanofluid flow and heat transfer characteristics for different cases are illustrated that obtained from the CFD code. The results for the average Nusselt numbers are compared with previous works and show good agreement. © 2014 Elsevier Ltd. |
| format | Article |
| id | my.uniten.dspace-22064 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2023 |
| publisher | Elsevier Ltd |
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| spelling | my.uniten.dspace-220642023-05-16T10:47:05Z Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid Alawi O.A. Sidik N.A.C. Dawood H.K. 56108584300 57204852231 56307856100 Natural convection heat transfer in two-dimensional region formed by constant heat flux horizontal flat tube concentrically located in cooled horizontal cylinder was studied numerically by using nanofluid. The model solved using the FLUENT CFD package. The numerical simulations covered a range of hydraulic radius ratio (5, 7.5, and 10) at orientation angles from 0° up to 90°. The results showed that the average Nusselt number increases with hydraulic radius ratio, orientation angles and Rayleigh number, as well as enhancement ratio for Nusselt number at orientation angle 90° and hydraulic radius ratio 7.5 is equal to 24.87%. Both the nanofluid flow and heat transfer characteristics for different cases are illustrated that obtained from the CFD code. The results for the average Nusselt numbers are compared with previous works and show good agreement. © 2014 Elsevier Ltd. Final 2023-05-16T02:47:04Z 2023-05-16T02:47:04Z 2014 Article 10.1016/j.icheatmasstransfer.2014.07.001 2-s2.0-84905408953 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905408953&doi=10.1016%2fj.icheatmasstransfer.2014.07.001&partnerID=40&md5=df0026fa4ebf415d03a4e2a011af1e68 https://irepository.uniten.edu.my/handle/123456789/22064 57 65 71 Elsevier Ltd Scopus |
| spellingShingle | Alawi O.A. Sidik N.A.C. Dawood H.K. Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| title | Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| title_full | Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| title_fullStr | Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| title_full_unstemmed | Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| title_short | Natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| title_sort | natural convection heat transfer in horizontal concentric annulus between outer cylinder and inner flat tube using nanofluid |
| url_provider | http://dspace.uniten.edu.my/ |