Exploring Homogeneous and Discrete Models for Predicting Hydrothermal Flow and Entropy Generation.
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| Title: | Exploring Homogeneous and Discrete Models for Predicting Hydrothermal Flow and Entropy Generation. |
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| Authors: | Hamzah, Hudhaifa1 (AUTHOR), Zontul, Harun2,3 (AUTHOR), Sahin, Besir2,4 (AUTHOR) besirsahin@aydin.edu.tr |
| Source: | Heat Transfer Engineering. 2026, Vol. 47 Issue 10, p920-942. 23p. |
| Subject Terms: | *Single walled carbon nanotubes, *Nanofluids, *Channels (Hydraulic engineering), *Nonequilibrium thermodynamics, *Multiphase flow, *Heat convection, *Turbulent flow |
| Abstract: | Forced convection heat transfer and entropy productions of single-walled carbon nanotubes (SWCNT) immersed in water for various wavy channels have been investigated numerically under turbulent flow conditions. This study aims to provide a new thermal management approach for compact thermal systems through the combination of two different strategies (shifted wavy wall and nanofluids). Therefore, the novelty of this study lies in its comprehensive numerical investigation of both single and two-phase turbulent flow of SWCNT -water nanofluids in modified shifted wavy channels. Homogeneous single-phase model (SPM) and discrete two-phase model (DPM) are implemented to simulate turbulent nanofluid flows. The governing equations for both models are solved computationally using the finite volume approach. Turbulent flows were analyzed in the range of Reynolds numbers from 4000 to 10,000 through a smooth channel and three different shifted wave channels. SWCNT nano-scale particles impregnated in water with two-volume concentrations were used and compared with pure water. The major finding reveals that the largest thermal performance factor was acquired for the wavy channel with a phase shift of 180° at the Reynolds number of 4000. It was found that the DPM offers a reasonable prediction of both thermal and entropy characteristics of SWCNT-water nanofluid compared to the SPM. Eventually, it is advised to utilize SWCNT-water nanofluid in a wavy channel with a Particle volume fraction of 3% as a result of high thermal performance and low entropy generation. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 192981916 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Exploring Homogeneous and Discrete Models for Predicting Hydrothermal Flow and Entropy Generation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hamzah%2C+Hudhaifa%22">Hamzah, Hudhaifa</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zontul%2C+Harun%22">Zontul, Harun</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sahin%2C+Besir%22">Sahin, Besir</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<i> besirsahin@aydin.edu.tr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Heat+Transfer+Engineering%22">Heat Transfer Engineering</searchLink>. 2026, Vol. 47 Issue 10, p920-942. 23p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Single+walled+carbon+nanotubes%22">Single walled carbon nanotubes</searchLink><br />*<searchLink fieldCode="DE" term="%22Nanofluids%22">Nanofluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Channels+%28Hydraulic+engineering%29%22">Channels (Hydraulic engineering)</searchLink><br />*<searchLink fieldCode="DE" term="%22Nonequilibrium+thermodynamics%22">Nonequilibrium thermodynamics</searchLink><br />*<searchLink fieldCode="DE" term="%22Multiphase+flow%22">Multiphase flow</searchLink><br />*<searchLink fieldCode="DE" term="%22Heat+convection%22">Heat convection</searchLink><br />*<searchLink fieldCode="DE" term="%22Turbulent+flow%22">Turbulent flow</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Forced convection heat transfer and entropy productions of single-walled carbon nanotubes (SWCNT) immersed in water for various wavy channels have been investigated numerically under turbulent flow conditions. This study aims to provide a new thermal management approach for compact thermal systems through the combination of two different strategies (shifted wavy wall and nanofluids). Therefore, the novelty of this study lies in its comprehensive numerical investigation of both single and two-phase turbulent flow of SWCNT -water nanofluids in modified shifted wavy channels. Homogeneous single-phase model (SPM) and discrete two-phase model (DPM) are implemented to simulate turbulent nanofluid flows. The governing equations for both models are solved computationally using the finite volume approach. Turbulent flows were analyzed in the range of Reynolds numbers from 4000 to 10,000 through a smooth channel and three different shifted wave channels. SWCNT nano-scale particles impregnated in water with two-volume concentrations were used and compared with pure water. The major finding reveals that the largest thermal performance factor was acquired for the wavy channel with a phase shift of 180° at the Reynolds number of 4000. It was found that the DPM offers a reasonable prediction of both thermal and entropy characteristics of SWCNT-water nanofluid compared to the SPM. Eventually, it is advised to utilize SWCNT-water nanofluid in a wavy channel with a Particle volume fraction of 3% as a result of high thermal performance and low entropy generation. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192981916 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/01457632.2025.2489706 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 23 StartPage: 920 Subjects: – SubjectFull: Single walled carbon nanotubes Type: general – SubjectFull: Nanofluids Type: general – SubjectFull: Channels (Hydraulic engineering) Type: general – SubjectFull: Nonequilibrium thermodynamics Type: general – SubjectFull: Multiphase flow Type: general – SubjectFull: Heat convection Type: general – SubjectFull: Turbulent flow Type: general Titles: – TitleFull: Exploring Homogeneous and Discrete Models for Predicting Hydrothermal Flow and Entropy Generation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hamzah, Hudhaifa – PersonEntity: Name: NameFull: Zontul, Harun – PersonEntity: Name: NameFull: Sahin, Besir IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 01457632 Numbering: – Type: volume Value: 47 – Type: issue Value: 10 Titles: – TitleFull: Heat Transfer Engineering Type: main |
| ResultId | 1 |
