Analysis of brush-molten metal interaction in brush atomizers: a CFD approach
AbstractOptimizing the efficiency of metal powder production through brush atomization necessitates a comprehensive understanding of the interaction between the brush bristles and the molten metal, as well as its consequential effects on the fragmentation of the melt. Thus this study presents Comput...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | Cogent Engineering |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/23311916.2024.2327572 |
| _version_ | 1797255798811787264 |
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| author | Osinachi Stanley Onwuka Godwin Ogechi Unachukwu Stephen Chijioke Nwanya |
| author_facet | Osinachi Stanley Onwuka Godwin Ogechi Unachukwu Stephen Chijioke Nwanya |
| author_sort | Osinachi Stanley Onwuka |
| collection | DOAJ |
| description | AbstractOptimizing the efficiency of metal powder production through brush atomization necessitates a comprehensive understanding of the interaction between the brush bristles and the molten metal, as well as its consequential effects on the fragmentation of the melt. Thus this study presents Computational Fluid Dynamics (CFD) models of the brush-melt interplay during the atomization of molten metals. The volume-of-fluid method was used to examine the various stages of melt fragmentation, from when the melt is discharged to when it settles on the brush bristles. The results revealed that the first breakup occurred close to the discharge orifice due to aerodynamic instability and fell within 13 < [Formula: see text]< 40.3. The nature of this breakup depends on the brush speed, bristle length, bristle diameter, brush density, and melt properties. A second breakup was observed when the melt contacted the rotating bristles. The melt bridges formed between two or more bristles due to attractive forces between the closely packed bristles induced by the capillary force of the melt and the surface tension of the meniscus surface are also overcome due to brush rotation. These results are in agreement with the experimental observations and are therefore sufficient for demonstrating the system. |
| first_indexed | 2024-04-24T22:11:35Z |
| format | Article |
| id | doaj.art-8ac9b2263f304ada8e6091b14c3be84b |
| institution | Directory Open Access Journal |
| issn | 2331-1916 |
| language | English |
| last_indexed | 2024-04-24T22:11:35Z |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Cogent Engineering |
| spelling | doaj.art-8ac9b2263f304ada8e6091b14c3be84b2024-03-20T08:30:02ZengTaylor & Francis GroupCogent Engineering2331-19162024-12-0111110.1080/23311916.2024.2327572Analysis of brush-molten metal interaction in brush atomizers: a CFD approachOsinachi Stanley Onwuka0Godwin Ogechi Unachukwu1Stephen Chijioke Nwanya2Department of Mechanical Engineering, Michael Okpara University of Agriculture, Umudike, NigeriaDepartment of Mechanical Engineering, University of Nigeria, Nsukka, NigeriaDepartment of Mechanical Engineering, University of Nigeria, Nsukka, NigeriaAbstractOptimizing the efficiency of metal powder production through brush atomization necessitates a comprehensive understanding of the interaction between the brush bristles and the molten metal, as well as its consequential effects on the fragmentation of the melt. Thus this study presents Computational Fluid Dynamics (CFD) models of the brush-melt interplay during the atomization of molten metals. The volume-of-fluid method was used to examine the various stages of melt fragmentation, from when the melt is discharged to when it settles on the brush bristles. The results revealed that the first breakup occurred close to the discharge orifice due to aerodynamic instability and fell within 13 < [Formula: see text]< 40.3. The nature of this breakup depends on the brush speed, bristle length, bristle diameter, brush density, and melt properties. A second breakup was observed when the melt contacted the rotating bristles. The melt bridges formed between two or more bristles due to attractive forces between the closely packed bristles induced by the capillary force of the melt and the surface tension of the meniscus surface are also overcome due to brush rotation. These results are in agreement with the experimental observations and are therefore sufficient for demonstrating the system.https://www.tandfonline.com/doi/10.1080/23311916.2024.2327572Brushatomizationmetalpowdermodelingnumerical |
| spellingShingle | Osinachi Stanley Onwuka Godwin Ogechi Unachukwu Stephen Chijioke Nwanya Analysis of brush-molten metal interaction in brush atomizers: a CFD approach Cogent Engineering Brush atomization metal powder modeling numerical |
| title | Analysis of brush-molten metal interaction in brush atomizers: a CFD approach |
| title_full | Analysis of brush-molten metal interaction in brush atomizers: a CFD approach |
| title_fullStr | Analysis of brush-molten metal interaction in brush atomizers: a CFD approach |
| title_full_unstemmed | Analysis of brush-molten metal interaction in brush atomizers: a CFD approach |
| title_short | Analysis of brush-molten metal interaction in brush atomizers: a CFD approach |
| title_sort | analysis of brush molten metal interaction in brush atomizers a cfd approach |
| topic | Brush atomization metal powder modeling numerical |
| url | https://www.tandfonline.com/doi/10.1080/23311916.2024.2327572 |
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