Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension
Boundary layers; Fins (heat exchange); Heat transfer performance; Suspensions (fluids); Vortex flow; Annular domain; Annular flows; Annular geometry; CGNP; Colloidal suspensions; Graphene nanoplatelets; Heat transfer performance; Recirculations; Swirl-inducing fin; Vortical structures; Computational...
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Springer Science and Business Media B.V.
2023
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my.uniten.dspace-266412023-05-29T17:35:59Z Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension Nair S.R. Oon C.S. Tan M.K. Mahalingam S. Manap A. Kazi S.N. 57403965500 55332679600 57966578800 55434075500 57200642155 7003406290 Boundary layers; Fins (heat exchange); Heat transfer performance; Suspensions (fluids); Vortex flow; Annular domain; Annular flows; Annular geometry; CGNP; Colloidal suspensions; Graphene nanoplatelets; Heat transfer performance; Recirculations; Swirl-inducing fin; Vortical structures; Computational fluid dynamics The paper investigated the benefits of having fins that induce swirling flow within an annular passage. The importance of the vortical structures produced using different fin angles and flow velocities in heat transfer was studied. The combination of swirling fluid with recirculation on heat transfer within an annular domain was not fully understood, and this paper aims to address that gap. The 10�, 20�, 30� and 40� angled fins were investigated to understand the changes in heat transfer performance as fluid recirculation becomes more dominant as angles become steeper. The usage of CGNP colloidal suspension was investigated for its potential benefits in heat transfer in a domain with angled fins. The CGNP concentrations of 0.025, 0.075 and 0.1 mass % were used as part of this investigation. Higher concentrations of CGNP increased the overall heat transfer coefficient. A more compact fin spacing improved heat transfer performance at the expense of increased pressure drop. Fin angles of 20� and 30� yielded poor heat transfer performance in the transitional flow regime (2000 < Re < 3000) due to the smaller swirling longitudinal vortices being insufficient in promoting fluid mixing from the thermal boundary layer into the freestream. � 2022, The Author(s). Final 2023-05-29T09:35:59Z 2023-05-29T09:35:59Z 2022 Article 10.1007/s10973-022-11733-6 2-s2.0-85141965154 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141965154&doi=10.1007%2fs10973-022-11733-6&partnerID=40&md5=9eb0c6fb3b5faebffd70dc0b645df1e7 https://irepository.uniten.edu.my/handle/123456789/26641 147 24 14873 14890 All Open Access, Hybrid Gold Springer Science and Business Media B.V. Scopus |
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Boundary layers; Fins (heat exchange); Heat transfer performance; Suspensions (fluids); Vortex flow; Annular domain; Annular flows; Annular geometry; CGNP; Colloidal suspensions; Graphene nanoplatelets; Heat transfer performance; Recirculations; Swirl-inducing fin; Vortical structures; Computational fluid dynamics |
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57403965500 |
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57403965500 Nair S.R. Oon C.S. Tan M.K. Mahalingam S. Manap A. Kazi S.N. |
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Article |
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Nair S.R. Oon C.S. Tan M.K. Mahalingam S. Manap A. Kazi S.N. |
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Nair S.R. Oon C.S. Tan M.K. Mahalingam S. Manap A. Kazi S.N. Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| author_sort |
Nair S.R. |
| title |
Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| title_short |
Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| title_full |
Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| title_fullStr |
Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| title_full_unstemmed |
Investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| title_sort |
investigation of heat transfer performance within annular geometries with swirl-inducing fins using clove-treated graphene nanoplatelet colloidal suspension |
| publisher |
Springer Science and Business Media B.V. |
| publishDate |
2023 |
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1806428235264688128 |