Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water
This study investigates the trajectory and spreading of a horizontal circular dense jet flow discharged above the water surface, the flow of which falls into shallow stagnant ambient water. For this purpose, 27 experiments were performed using three diameters, flow rates, and falling heights to inve...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024011526 |
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| author | Hossein Azizi Nadian Nima Shahni Karamzadeh Javad Ahadiyan Morteza Bakhtiari |
| author_facet | Hossein Azizi Nadian Nima Shahni Karamzadeh Javad Ahadiyan Morteza Bakhtiari |
| author_sort | Hossein Azizi Nadian |
| collection | DOAJ |
| description | This study investigates the trajectory and spreading of a horizontal circular dense jet flow discharged above the water surface, the flow of which falls into shallow stagnant ambient water. For this purpose, 27 experiments were performed using three diameters, flow rates, and falling heights to investigate jet trajectory. In addition, nine experiments with constant falling height were conducted to study jet spreading. The densimetric Froude number of the jet flow at the nozzle outlet and water surface of the present study ranged from 0.72 to 4.22 and 36.96 to 86.10, respectively. The data pertaining to this study were extracted and analyzed through image processing. The results of the experiments showed that by increasing both the momentum and falling height, the trajectory of the jet flow reached a farther distance from the discharge nozzle. The spreading of the outer boundaries of the dense circular falling jet flow tended to extend downstream of the impact point and had an elliptical motion on the bed. The relationship between radial distance from the impingement point to the outer boundary of flow and time was determined to have a power of 0.67 for flow along the flume and 0.59 for flow along the flume's width. |
| format | Article |
| id | doaj-art-6f035ce75d0c4800985a573d02fe7dc4 |
| institution | DOAJ |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-6f035ce75d0c4800985a573d02fe7dc42025-08-20T02:52:21ZengElsevierResults in Engineering2590-12302024-12-012410289710.1016/j.rineng.2024.102897Trajectory and spreading of falling circular dense jets in shallow stagnant ambient waterHossein Azizi Nadian0Nima Shahni Karamzadeh1Javad Ahadiyan2Morteza Bakhtiari3Faculty of Marine Engineering, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran; Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Brescia, ItalyFaculty of Marine Engineering, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran; Corresponding author.Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, IranFaculty of Marine Engineering, Khorramshahr University of Marine Science and Technology, Khorramshahr, IranThis study investigates the trajectory and spreading of a horizontal circular dense jet flow discharged above the water surface, the flow of which falls into shallow stagnant ambient water. For this purpose, 27 experiments were performed using three diameters, flow rates, and falling heights to investigate jet trajectory. In addition, nine experiments with constant falling height were conducted to study jet spreading. The densimetric Froude number of the jet flow at the nozzle outlet and water surface of the present study ranged from 0.72 to 4.22 and 36.96 to 86.10, respectively. The data pertaining to this study were extracted and analyzed through image processing. The results of the experiments showed that by increasing both the momentum and falling height, the trajectory of the jet flow reached a farther distance from the discharge nozzle. The spreading of the outer boundaries of the dense circular falling jet flow tended to extend downstream of the impact point and had an elliptical motion on the bed. The relationship between radial distance from the impingement point to the outer boundary of flow and time was determined to have a power of 0.67 for flow along the flume and 0.59 for flow along the flume's width.http://www.sciencedirect.com/science/article/pii/S2590123024011526Falling circular dense jetsTrajectoryImpact pointSpreading shapeSpreading coefficient |
| spellingShingle | Hossein Azizi Nadian Nima Shahni Karamzadeh Javad Ahadiyan Morteza Bakhtiari Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water Results in Engineering Falling circular dense jets Trajectory Impact point Spreading shape Spreading coefficient |
| title | Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water |
| title_full | Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water |
| title_fullStr | Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water |
| title_full_unstemmed | Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water |
| title_short | Trajectory and spreading of falling circular dense jets in shallow stagnant ambient water |
| title_sort | trajectory and spreading of falling circular dense jets in shallow stagnant ambient water |
| topic | Falling circular dense jets Trajectory Impact point Spreading shape Spreading coefficient |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024011526 |
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