한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2010년 춘계학술대회논문집
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- Pages.103-108
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- 2010
코로나 방전기가 없는 전기집진기의 나노입자 집진에 관한 수치해석
NUMERICAL INVESTIGATION ON CAPTURE OF NANOPARTICLES IN ELECTROSTATIC PRECIPITATOR WITHOUT CORONA DISCHARGER
초록
This article presents computational fluid dynamics (CFD) simulations of nanoparticle movements and flow characteristics in laboratory-scale electrostatic precipitator (ESP) without corona discharge, and for simulation, it uses the commercial CFD program(CFD-ACE) including electrostatic theory and Lagrangian-based equation for nanoparticle movement. For validation of CFD results, a simple cylindrical type of ESP is simulated and numerical prediction shows fairly good agreement with the analytical solution. In particular, the present study investigates the effect of particle diameter, inlet flow rate, and applied electric potential on particle collection efficiency and compares the numerical prediction with the experimental data, showing good agreement. It is found that the particle collection efficiency decreases with increasing inlet flow rate because the particle detention time becomes shorter, whereas it decreases with the increase in nanoparticle diameter and with the decrease of applied electric voltage resulting from smaller terminal electrostatic velocity.
키워드