대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제33권10호
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  • Pages.811-819
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  • 2009
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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Brownian Dynamics 를 이용한 입자 포집 과정 및 여과 성능 해석

Analysis of Filtration Performance by Brownian Dynamics

  • 방종근 (연세대학교 대학원 기계공학부) ;
  • 윤웅섭 (연세대학교 기계공학부)
  • 발행 : 2009.10.01
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초록

In the present study, deposition of discrete and small particles on a filter fiber was simulated by stochastic method. Trajectory of each particle was numerically solved by Langevin equation. And Lattice Boltzmann method (LBM) was used to solve flow field around the filter collector for considering complex shape of deposit layer. Interaction between the flow field and the deposit layer was obtained from a converged solution from an inner-loop calculation. Simulation method is properly validated with filtration theory and collection efficiency due to different filtration parameters are examined and discussed. Morphology of deposit layer and its evolution was visualized in terms of the particle size. The particle loaded effect on collection efficiency was also discussed.

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참고문헌

  1. Brown, 1993,'Air Filtration,'Fergamon press
  2. Hinds, 1999,'Aerosol Technology,'Wiley Interscience
  3. Ermak and Buckholz, 1980,'Numerical Integration of the Langevin Equation: Monte Carlo Simulation,'Journal of Computational Physics, Vol. 35, pp. 162-182 https://doi.org/10.1016/0021-9991(80)90084-4
  4. Gupta and Peters, 1985,'A Brownian Dynamics Simulation of Aerosol Deposition onto Spherical Collectors,'Journal of Colloid and Interface Science, Vol. 104, pp. 375-389 https://doi.org/10.1016/0021-9797(85)90046-3
  5. Ramarao, Chi Tien and Mohan, 1994,'Calculation of Single Fiber Efficiencies for Interception and Impaction with Superposed Brownian Motion,'Journal of Aerosol Science, Vol. 25, pp. 295-313 https://doi.org/10.1016/0021-8502(94)90081-7
  6. Lantermann and Hänel, 2007,'Particle Monte Carlo and Lattice-Boltzmann Methods for Simulations of Gasparticle Flows,'Computers & Fluids, Vol. 36, pp. 407-422 https://doi.org/10.1016/j.compfluid.2005.10.005
  7. Yu, D., Mei, R., and Shyy, W., 2002,'A Multi-Block Lattice Boltzmann Method for Viscous Fluid Flows,'Int. J. Numerical Methods in Fluids, Vol. 39, pp. 99-120 https://doi.org/10.1002/fld.280
  8. Elimelech, M., Gregory, J., Jia, X., and Williams, R.A., 1995,'Particle Deposition & Aggregation : Measurement Modeling and Simulation,' Butterworth-Heinemann