Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct
Fundamental understanding on the enhancement of heat transfer rate and decreasing the maximum operating temperature is crucial for proper design of thermal systems. The present study discusses the influence of non-uniform heating on the forced convective flow of nanofluid through converging miniduct...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22007821 |
| _version_ | 1811315727807807488 |
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| author | Md Faizan Sukumar Pati Pitambar R. Randive László Baranyi |
| author_facet | Md Faizan Sukumar Pati Pitambar R. Randive László Baranyi |
| author_sort | Md Faizan |
| collection | DOAJ |
| description | Fundamental understanding on the enhancement of heat transfer rate and decreasing the maximum operating temperature is crucial for proper design of thermal systems. The present study discusses the influence of non-uniform heating on the forced convective flow of nanofluid through converging miniduct. Numerical simulations are performed using the Euler-Lagrangian two-phase flow model by finite volume method to find the effects of Reynolds number (Re), nanofluid volume fraction (φ), and amplitude (A) of sinusoidal heat flux on the heat transfer. The effect of various parameters on the magnitude of crest and trough of local Nusselt numbers is found to be a crucial factor in determining the total heat transfer. The results indicate a considerable increase in average Nusselt number (Nuav) with φ and Re. At Re = 100 the increments in Nuav are 3.4%, 6.7%, and 13.4% when φ is increased from 0 to 1, 3, and 5%, respectively, while it increases by 107%, 114%, and 116% for amplitudes of 0, 0.75, and 1, respectively, when Re is increased from 100 to 800. Increasing A reduces the heat transfer rate. The highest performance factor is found to be 0.945 at Re = 600, φ = 5% and A = 0. |
| first_indexed | 2024-04-13T11:35:35Z |
| format | Article |
| id | doaj.art-bc45d3adb11f41119d55f319a5c4b26b |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-13T11:35:35Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-bc45d3adb11f41119d55f319a5c4b26b2022-12-22T02:48:27ZengElsevierCase Studies in Thermal Engineering2214-157X2022-12-0140102545Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging ductMd Faizan0Sukumar Pati1Pitambar R. Randive2László Baranyi3Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar, 788010, IndiaDepartment of Mechanical Engineering, National Institute of Technology Silchar, Silchar, 788010, IndiaDepartment of Mechanical Engineering, National Institute of Technology Silchar, Silchar, 788010, IndiaDepartment of Fluid and Heat Engineering, Institute of Energy Engineering and Chemical Machinery, University of Miskolc, 3515, Miskolc, Egyetemváros, Hungary; Corresponding author.Fundamental understanding on the enhancement of heat transfer rate and decreasing the maximum operating temperature is crucial for proper design of thermal systems. The present study discusses the influence of non-uniform heating on the forced convective flow of nanofluid through converging miniduct. Numerical simulations are performed using the Euler-Lagrangian two-phase flow model by finite volume method to find the effects of Reynolds number (Re), nanofluid volume fraction (φ), and amplitude (A) of sinusoidal heat flux on the heat transfer. The effect of various parameters on the magnitude of crest and trough of local Nusselt numbers is found to be a crucial factor in determining the total heat transfer. The results indicate a considerable increase in average Nusselt number (Nuav) with φ and Re. At Re = 100 the increments in Nuav are 3.4%, 6.7%, and 13.4% when φ is increased from 0 to 1, 3, and 5%, respectively, while it increases by 107%, 114%, and 116% for amplitudes of 0, 0.75, and 1, respectively, when Re is increased from 100 to 800. Increasing A reduces the heat transfer rate. The highest performance factor is found to be 0.945 at Re = 600, φ = 5% and A = 0.http://www.sciencedirect.com/science/article/pii/S2214157X22007821Converging ductHeat transferNanofluidsNon-uniform heatingTwo-phase flow |
| spellingShingle | Md Faizan Sukumar Pati Pitambar R. Randive László Baranyi Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct Case Studies in Thermal Engineering Converging duct Heat transfer Nanofluids Non-uniform heating Two-phase flow |
| title | Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct |
| title_full | Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct |
| title_fullStr | Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct |
| title_full_unstemmed | Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct |
| title_short | Numerical study of nanofluid flow and heat transfer through a non-uniformly heated converging duct |
| title_sort | numerical study of nanofluid flow and heat transfer through a non uniformly heated converging duct |
| topic | Converging duct Heat transfer Nanofluids Non-uniform heating Two-phase flow |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X22007821 |
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