Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Development of Simple Bimodal Model for Charged Particle Coagulation

Bimodal 방법을 이용한 하전입자 응집 모델링

  • Kim, Sang Bok (Department of Eco-Machinery System, Environmental and Energy Systems Research Division Korea Institute of Machinery and Materials) ;
  • Song, Dong Keun (Department of Eco-Machinery System, Environmental and Energy Systems Research Division Korea Institute of Machinery and Materials) ;
  • Hong, Won Seok (Department of Eco-Machinery System, Environmental and Energy Systems Research Division Korea Institute of Machinery and Materials) ;
  • Shin, Wanho (Department of Eco-Machinery System, Environmental and Energy Systems Research Division Korea Institute of Machinery and Materials)
  • 김상복 (한국기계연구원 환경에너지기계연구본부 환경기계시스템연구실) ;
  • 송동근 (한국기계연구원 환경에너지기계연구본부 환경기계시스템연구실) ;
  • 홍원석 (한국기계연구원 환경에너지기계연구본부 환경기계시스템연구실) ;
  • 신완호 (한국기계연구원 환경에너지기계연구본부 환경기계시스템연구실)
  • Received : 2014.03.07
  • Accepted : 2014.03.19
  • Published : 2014.03.31
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Abstract

A simple bimodal model has been developed to analyze charged particle coagulation by modifying previously suggested bimdal model for evolution of particle generation and growth. In the present model, two monodisperse modes are used and 40 charge nodes are assigned to each mode to account both change of the particle size and charge distribution. In addition, we also implemented the effect of electrostatic dispersion loss in the present model. Based on the developed model, we analyzed coagulation of asymmetric bipolar charged particles by computing evolutions of particle number concentration, geometric mean diameter of particles, charge asymmetric ratio and geometric standard deviation of particle size distribution for various initial charge asymmetric ratios. The number concentration of asymmetric bipolar charged particles decreases faster than that of neutral particles but that does not give faster growth of particles since the electrostatic dispersion loss overwhelms particle growth by coagulation.

Keywords

References

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