Simulation of particle deposition on filter fiber in an external electric field |
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Authors: | Hyun-Seol Park Young Ok Park |
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Affiliation: | (1) Clean Air Technology Research Center, Korea Institute of Energy Research, 71-2, Jang-Dong, Yusung-Gu, 305-343 Daejeon, Korea |
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Abstract: | Particle deposition onto a filter fiber was numerically simulated when a uniform external electric field was applied. The
effects of electric field strength, particle inertia, and electrical conductivity of particles on particle deposition characteristics
such as particle loading patterns and collection efficiency were qualitatively investigated. As a result, the electrostatic
forces between a newly introduced particle and the already captured particles on the fiber were found to have a great influence
on the particle deposition patterns compared with the results where the electrostatic forces were neglected. Conductive particles
and filter fibers lead to higher collection efficiency and more linear structure of particle deposits than those of dielectrics,
and the particle inertia could also be more important to the collection efficiency of a fibrous filter when electric fields
are present. The simulated particle deposits obtained from this work agreed well with the existing experimental results, in
which the photographs of particle loaded fibers, within an external electric field, were reported. |
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Keywords: | Particle Deposition Fibrous Filter Electrostatic Force External Electric Field Simulation |
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