CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing
Abstract Using the RANS approach with the standard k-ω turbulence model, this study offers a novel investigation into the dynamic and thermal properties of turbulent impinging jet arrays. Our study examines the combined effect of the number of jets (N) and the jet–jet spacing (S) on flow mechanisms...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-86360-w |
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| author | Zakia Rachdi Nidhal Hnaien Aboulbaba Eladeb Badr M. Alshammari Lioua Kolsi Hacen Dhahri |
| author_facet | Zakia Rachdi Nidhal Hnaien Aboulbaba Eladeb Badr M. Alshammari Lioua Kolsi Hacen Dhahri |
| author_sort | Zakia Rachdi |
| collection | DOAJ |
| description | Abstract Using the RANS approach with the standard k-ω turbulence model, this study offers a novel investigation into the dynamic and thermal properties of turbulent impinging jet arrays. Our study examines the combined effect of the number of jets (N) and the jet–jet spacing (S) on flow mechanisms and heat transfer performance, which is unique compared to previous research that frequently focuses on the individual effects of parameters. Through the investigation of the turbulent kinetic energy, friction coefficient, velocity contours, streamlines, pressure contours, and local and mean Nusselt numbers, we provide important information about how these parameters impact flow dynamics. Local heat transfer in the central and lateral zones is greatly improved by increasing the number of jets (N) and the jet–jet spacing (S), according to our findings. When the jet–jet spacing (S) is increased from 1 to 4, the maximum value of the Nusselt number along the central zone improves by 21.2%. Furthermore, the best improvement in the maximum Nusselt number (24.5%) along the lateral zone is obtained by increasing the number of jets (N) from 5 to 11 for the lower value of jet–jet spacing S = 1. It has also been noted that lower jet-plate distance (H), lower jet–jet spacing (S), and a higher number of jets (N) result in better average heat transfer. To predict the average Nusselt number based on three parameters (N, S, and H), we establish a critical correlation, which provides a useful tool for optimizing impinging jet configurations in a variety of engineering applications. The diversification of the parameters studied and the thorough analysis in this study add important new results to the field by demonstrating the significant effects of the number of jets, jet–jet spacing, and jet-plate distance on the thermal and dynamic behavior of impinging jet arrays. |
| format | Article |
| id | doaj-art-0e5c50a55a4844f5a4cb2958e33b074d |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-0e5c50a55a4844f5a4cb2958e33b074d2025-01-26T12:32:27ZengNature PortfolioScientific Reports2045-23222025-01-0115111710.1038/s41598-025-86360-wCFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacingZakia Rachdi0Nidhal Hnaien1Aboulbaba Eladeb2Badr M. Alshammari3Lioua Kolsi4Hacen Dhahri5Thermal and Energetic Systems Studies Laboratory (LESTE), LR99ES31, College of Engineering, University of MonastirDepartment of Energy Engineering, College of Engineering, University of MonastirMining Research Center, Northern Border UniversityDepartment of Electrical Engineering, College of Engineering, University of Ha’ilDepartment of Mechanical Engineering, College of Engineering, University of Ha’ilThermal and Energetic Systems Studies Laboratory (LESTE), LR99ES31, College of Engineering, University of MonastirAbstract Using the RANS approach with the standard k-ω turbulence model, this study offers a novel investigation into the dynamic and thermal properties of turbulent impinging jet arrays. Our study examines the combined effect of the number of jets (N) and the jet–jet spacing (S) on flow mechanisms and heat transfer performance, which is unique compared to previous research that frequently focuses on the individual effects of parameters. Through the investigation of the turbulent kinetic energy, friction coefficient, velocity contours, streamlines, pressure contours, and local and mean Nusselt numbers, we provide important information about how these parameters impact flow dynamics. Local heat transfer in the central and lateral zones is greatly improved by increasing the number of jets (N) and the jet–jet spacing (S), according to our findings. When the jet–jet spacing (S) is increased from 1 to 4, the maximum value of the Nusselt number along the central zone improves by 21.2%. Furthermore, the best improvement in the maximum Nusselt number (24.5%) along the lateral zone is obtained by increasing the number of jets (N) from 5 to 11 for the lower value of jet–jet spacing S = 1. It has also been noted that lower jet-plate distance (H), lower jet–jet spacing (S), and a higher number of jets (N) result in better average heat transfer. To predict the average Nusselt number based on three parameters (N, S, and H), we establish a critical correlation, which provides a useful tool for optimizing impinging jet configurations in a variety of engineering applications. The diversification of the parameters studied and the thorough analysis in this study add important new results to the field by demonstrating the significant effects of the number of jets, jet–jet spacing, and jet-plate distance on the thermal and dynamic behavior of impinging jet arrays.https://doi.org/10.1038/s41598-025-86360-wCFDNumber of jetsHeat transferStreamlinesTurbulent flowNusselt number |
| spellingShingle | Zakia Rachdi Nidhal Hnaien Aboulbaba Eladeb Badr M. Alshammari Lioua Kolsi Hacen Dhahri CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing Scientific Reports CFD Number of jets Heat transfer Streamlines Turbulent flow Nusselt number |
| title | CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing |
| title_full | CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing |
| title_fullStr | CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing |
| title_full_unstemmed | CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing |
| title_short | CFD analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing |
| title_sort | cfd analysis of heat transfer enhancement in impinging jet array by varying number of jets and spacing |
| topic | CFD Number of jets Heat transfer Streamlines Turbulent flow Nusselt number |
| url | https://doi.org/10.1038/s41598-025-86360-w |
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