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http://dx.doi.org/10.9708/jksci.2013.18.1.149

CFD Explanation and Verification of Multi Inner Stage Cyclone for The Particle Removal  

Lee, Sang Jun (Environment & Energy Convergence Tech. R&D, Pyeongtaek University)
Kim, Chun-Lee (Environment & Energy Convergence Tech. R&D, Pyeongtaek University)
Lee, Won Joo (Dept. of Computer Science, Inha Technical College)
Abstract
In this paper, Commercial program, STAR-CCM+, was used for computer simulation. And also Multi Inner Stage(MIS) cyclone which especially designed for the real experiments of particle removal efficiency. Under negative pressure condition of outlet, computer simulation was performed to predict the removal efficiency for $5{\mu}m$ and $10{\mu}m$ particles by using a turbulence model and lagrangian method. The simulation results are 55.7% and 64.1% for $5{\mu}m$ and $10{\mu}m$ particles, respectively. To compare the simulation results with the actual test of MIS cyclone, we generated the $SiO_2$ particles by heat reactor. Although removal efficiency of actual tests is 63~76% at different flow rate, the size of $SiO_2$ particles which confirmed by SEM(scanning electron microscope) and WAPS(wide range aerosol particle spectrometer) is too small(15~30nm) to compare each results. And so the alternative experiments were performed by using commercial alumina particles ($5{\mu}m$, $10{\mu}m$ and $20{\mu}m$). It was shown that the actual removal efficiency, 76~95%, from MIS cyclone is higher than simulated one.
Keywords
cyclone; $SiO_2$; particle; particle removal efficiency; CFD simulation;
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