Liquid flows induced in a rotating drum with different fill ratios
Abstract In the present study, we experimentally investigate the liquid flow induced in a rotating drum (cylindrical tank with a short aspect ratio) aligned horizontally, focusing on the variation in the time-averaged and fluctuating flow structures with different fill ratios. For each fill ratio, c...
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| Language: | English |
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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/s41598-024-84579-7 |
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| author | Daeun Lee Jaebeen Lee Seok Min Choi Sangtak Lee Hyungmin Park |
| author_facet | Daeun Lee Jaebeen Lee Seok Min Choi Sangtak Lee Hyungmin Park |
| author_sort | Daeun Lee |
| collection | DOAJ |
| description | Abstract In the present study, we experimentally investigate the liquid flow induced in a rotating drum (cylindrical tank with a short aspect ratio) aligned horizontally, focusing on the variation in the time-averaged and fluctuating flow structures with different fill ratios. For each fill ratio, controlled by varying the water height, we measure the velocity fields at different cross-sectional planes with particle image velocimetry while varying the rotational speed of the drum. Compared to the condition of a fill ratio of 1.0, in which the liquid inside the drum rotates forming a large-scale (solid-body rotation) organized flow structure, a substantial asymmetric flow structure shows up in partially-filled conditions driven by the imbalance between (i) the momentum diffusion along the radial direction and the centrifugal acceleration, and (ii) the downward (gravitational) flux of the induced flow. In addition to the mean flow structure, we examine the fluctuating velocity fields together with the dynamics of the free surface, and we also briefly discuss the difference between the liquid flow and granular (particle) flow in a partially-filled drum. We think that the present results provide valuable insights on the partially-filled liquid drum toward various engineering applications. |
| format | Article |
| id | doaj-art-2491ad572b384002abffd31c357ddfba |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-2491ad572b384002abffd31c357ddfba2025-01-19T12:22:46ZengNature PortfolioScientific Reports2045-23222025-01-0115111210.1038/s41598-024-84579-7Liquid flows induced in a rotating drum with different fill ratiosDaeun Lee0Jaebeen Lee1Seok Min Choi2Sangtak Lee3Hyungmin Park4Department of Mechanical Engineering, Seoul National UniversityDepartment of Mechanical Engineering, Seoul National UniversitySamsung Research, Samsung Electronics Co., LtdSamsung Research, Samsung Electronics Co., LtdDepartment of Mechanical Engineering, Seoul National UniversityAbstract In the present study, we experimentally investigate the liquid flow induced in a rotating drum (cylindrical tank with a short aspect ratio) aligned horizontally, focusing on the variation in the time-averaged and fluctuating flow structures with different fill ratios. For each fill ratio, controlled by varying the water height, we measure the velocity fields at different cross-sectional planes with particle image velocimetry while varying the rotational speed of the drum. Compared to the condition of a fill ratio of 1.0, in which the liquid inside the drum rotates forming a large-scale (solid-body rotation) organized flow structure, a substantial asymmetric flow structure shows up in partially-filled conditions driven by the imbalance between (i) the momentum diffusion along the radial direction and the centrifugal acceleration, and (ii) the downward (gravitational) flux of the induced flow. In addition to the mean flow structure, we examine the fluctuating velocity fields together with the dynamics of the free surface, and we also briefly discuss the difference between the liquid flow and granular (particle) flow in a partially-filled drum. We think that the present results provide valuable insights on the partially-filled liquid drum toward various engineering applications.https://doi.org/10.1038/s41598-024-84579-7Rotating drumFill ratioFlow structureFree surfaceParticle image velocimetry |
| spellingShingle | Daeun Lee Jaebeen Lee Seok Min Choi Sangtak Lee Hyungmin Park Liquid flows induced in a rotating drum with different fill ratios Scientific Reports Rotating drum Fill ratio Flow structure Free surface Particle image velocimetry |
| title | Liquid flows induced in a rotating drum with different fill ratios |
| title_full | Liquid flows induced in a rotating drum with different fill ratios |
| title_fullStr | Liquid flows induced in a rotating drum with different fill ratios |
| title_full_unstemmed | Liquid flows induced in a rotating drum with different fill ratios |
| title_short | Liquid flows induced in a rotating drum with different fill ratios |
| title_sort | liquid flows induced in a rotating drum with different fill ratios |
| topic | Rotating drum Fill ratio Flow structure Free surface Particle image velocimetry |
| url | https://doi.org/10.1038/s41598-024-84579-7 |
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