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Received September 13, 2004
Accepted December 21, 2004
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Simulation of Particle Deposition on Filter Fiber in an External Electric Field
Clean Air Technology Research Center, Korea Institute of Energy Research, 71-2, Jang-Dong, Yusung-Gu, Daejeon 305-343, Korea
phs@kier.re.kr
Korean Journal of Chemical Engineering, March 2005, 22(2), 303-314(12), 10.1007/BF02701502
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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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