Dynamic Behavior of Nano-Size Dust Particles in a Magnetic Field Channel
| Autor: | Haewoo Park, Shan Huang, Young Min Jo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Dust particles Biomedical Engineering Bioengineering 02 engineering and technology General Chemistry Computational fluid dynamics 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Computational physics Magnetic field Ferromagnetism Magnet Fluid dynamics General Materials Science Duct (flow) 0210 nano-technology business Common emitter |
| Zdroj: | Journal of nanoscience and nanotechnology. 16(5) |
| ISSN: | 1533-4899 |
| Popis: | Removal of very small dust from indoor public spaces, such as metro subway stations, is a challenge. A large proportion of subway dust, particularly that of submicron sizes, contains iron compounds. This study sought to understand the dynamic behavior of such fine iron dust in a magnetic field. The computer aided fluid dynamics (CFD) calculation revealed that the design and configuration of a rectangular flow channel with magnets determine the dynamic motion of particles. An attractive magnetic emitter arrangement produced higher magnetic flux density than a repulsive arrangement. Additional ferromagnetic wire mesh inserted into the duct channel could provide a more systematic magnetic field and collect more dust. The field gradient for 0.3 mm thick wire was more than twice that of 0.5 mm wire. The provision of a magnetic field could contribute a 20% increase in 100 nm particle collection and an increase of 5% in 10 nm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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