Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Computational Analysis of Flow Velocity and Particle Trajectory on the Surface of Bag-Shaped Filters with a Different Permeability

투과율에 따른 백-형상의 필터 표면에서의 유동속도 및 입자궤적 수치해석

  • Park, Seok Joo (Clean Energy System Research Center, Korea Institute of Energy Research) ;
  • Lee, Dong Geun (Department of Mechanical Engineering, Chungnam National University) ;
  • Lee, Si Hyun (Clean Energy System Research Center, Korea Institute of Energy Research)
  • 박석주 (한국에너지기술연구원 청정시스템연구센터) ;
  • 이동근 (충남대학교 기계공학과) ;
  • 이시훈 (한국에너지기술연구원 청정시스템연구센터)
  • Received : 2006.02.09
  • Accepted : 2006.06.08
  • Published : 2006.06.30
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Abstract

Computational simulation was performed to analyze flow velocities and particle trajectories onto the surface of bag-shaped filters with a different permeability. When the permeability of a filter is lower than that of a low-efficient fabric bag-filter widely used, the distributions of flow velocities and particle trajectories on the filter surface were not different with decreasing the filter permeability. The distributions of streamlines and radial directional gas velocities were uniform on the filter surface except for the neighbors of the bottom edge and outlet of the filter. The particle trajectories onto filter surface were more densely distributed around the bottom edge of the filter, so that the particle number on the filter surface was maximized near the bottom edge and decreased in the direction of the filter outlet.

백-형상 필터의 투과율에 따른 필터 표면에서의 유동속도와 입자궤적을 수치해석 하였다. 필터의 투과율이 널리 사용되는 저급의 부직포 백필터의 투과율 이하의 조건에서는, 투과율에 따른 필터 표면에서의 유동속도와 입자궤적 분포의 변화가 아주 미미하였다. 필터의 바닥면 모서리와 출구 근처를 제외한 필터 표면에서 유선들과 반경 방향 유속들이 균일하게 분포하였다. 필터 표면으로의 입자궤적은 필터의 바닥면 모서리 근처에 더 조밀하게 분포하여 그 위치에 도달하는 입자의 수가 가장 많았고, 필터의 출구 쪽으로 향함에 따라 필터 표면에 위치하는 입자의 수는 점점 감소하는 추세를 보였다.

Keywords

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