Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow
This study investigated the thermal performance enhancement in a cubic shell heat exchanger (CSHE) equipped with rotating tubes and utilizing nanofluids under turbulent flow conditions. Water based nanofluids using Al₂O₃, SiO₂, ZnO, and CuO nanoparticles (diameters from 20 nm to 80 nm) were utilized...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25000176 |
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| author | Athraa Hameed Turki Ali Khaleel Kareem Ali M. Mohsen |
| author_facet | Athraa Hameed Turki Ali Khaleel Kareem Ali M. Mohsen |
| author_sort | Athraa Hameed Turki |
| collection | DOAJ |
| description | This study investigated the thermal performance enhancement in a cubic shell heat exchanger (CSHE) equipped with rotating tubes and utilizing nanofluids under turbulent flow conditions. Water based nanofluids using Al₂O₃, SiO₂, ZnO, and CuO nanoparticles (diameters from 20 nm to 80 nm) were utilized under turbulent flow with concentrations ranging from 0 % to 2 %. The numerical simulations were carried out using the Reynolds-averaged Navier-Stokes (RANS) solver and the realizable k-ε turbulence model. It is shown a highest increase in Nusselt number of 15 % was achieved when using a 20 nm SiO₂ nanoparticles suspended in water compared to pure water. Further improvement in Nusselt number by up to 10 % was observed by increasing the nanoparticles volume fraction to 2 %. For Reynold’s numbers between 15000 and 30000, a 20 % improvement in the heat transfer was obtained due to increased turbulence. Surprisingly, the rotating inner tube introduced minimal effect compared to stationary configuration, with stationary tube slightly outperforming the rotating ones in most cases. The data suggests that significant enhancement in heat exchanger performance can be achieved by optimizing nanofluids properties and Reynold’s numbers, while tube rotations provided no additional benefits to the efficiency of the facility. |
| format | Article |
| id | doaj-art-9a773f46e0b542e9b81b5f9a0c4989df |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-9a773f46e0b542e9b81b5f9a0c4989df2025-02-02T05:27:22ZengElsevierCase Studies in Thermal Engineering2214-157X2025-02-0166105757Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flowAthraa Hameed Turki0Ali Khaleel Kareem1Ali M. Mohsen2Department of Mechanical, College of Engineering, University of Sumer, Rifai 64005, IraqDepartment of Mechanical, College of Engineering, University of Sumer, Rifai 64005, IraqCollege of Engineering, University of Warith Al-Anbiyaa, Karbala, 56001, Iraq; Corresponding author.This study investigated the thermal performance enhancement in a cubic shell heat exchanger (CSHE) equipped with rotating tubes and utilizing nanofluids under turbulent flow conditions. Water based nanofluids using Al₂O₃, SiO₂, ZnO, and CuO nanoparticles (diameters from 20 nm to 80 nm) were utilized under turbulent flow with concentrations ranging from 0 % to 2 %. The numerical simulations were carried out using the Reynolds-averaged Navier-Stokes (RANS) solver and the realizable k-ε turbulence model. It is shown a highest increase in Nusselt number of 15 % was achieved when using a 20 nm SiO₂ nanoparticles suspended in water compared to pure water. Further improvement in Nusselt number by up to 10 % was observed by increasing the nanoparticles volume fraction to 2 %. For Reynold’s numbers between 15000 and 30000, a 20 % improvement in the heat transfer was obtained due to increased turbulence. Surprisingly, the rotating inner tube introduced minimal effect compared to stationary configuration, with stationary tube slightly outperforming the rotating ones in most cases. The data suggests that significant enhancement in heat exchanger performance can be achieved by optimizing nanofluids properties and Reynold’s numbers, while tube rotations provided no additional benefits to the efficiency of the facility.http://www.sciencedirect.com/science/article/pii/S2214157X25000176Heat exchangerNanofluidsTurbulent flowCFDReynolds numberRotating tubes |
| spellingShingle | Athraa Hameed Turki Ali Khaleel Kareem Ali M. Mohsen Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow Case Studies in Thermal Engineering Heat exchanger Nanofluids Turbulent flow CFD Reynolds number Rotating tubes |
| title | Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow |
| title_full | Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow |
| title_fullStr | Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow |
| title_full_unstemmed | Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow |
| title_short | Heat transfer in a 3D cubic shell heat exchanger with rotating tubes and turbulent flow |
| title_sort | heat transfer in a 3d cubic shell heat exchanger with rotating tubes and turbulent flow |
| topic | Heat exchanger Nanofluids Turbulent flow CFD Reynolds number Rotating tubes |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25000176 |
| work_keys_str_mv | AT athraahameedturki heattransferina3dcubicshellheatexchangerwithrotatingtubesandturbulentflow AT alikhaleelkareem heattransferina3dcubicshellheatexchangerwithrotatingtubesandturbulentflow AT alimmohsen heattransferina3dcubicshellheatexchangerwithrotatingtubesandturbulentflow |