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http://dx.doi.org/10.5572/KOSAE.2007.23.6.708

Recalculation of the Particle Dynamic Model for Gas-Solid Cyclone  

Lee, Kyung-Mi (Department of Environmental Science & Engineering, Kyunghee University)
Jang, Jung-Hee (Department of Environmental Science & Engineering, Kyunghee University)
Jo, Young-Min (Department of Environmental Science & Engineering, Kyunghee University)
Kim, Chang-Nyung (Department of Mechanical Engineering, Kyunghee University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.23, no.6, 2007 , pp. 708-717 More about this Journal
Abstract
In the present study, one of the widely applied equations for gas-solid cyclones, Leith and Licht model, was evaluated based on the 3-D CFD technique. The initial and boundary values of radial position and tangential velocity obtain-ed from the CFD simulation enabled complete calculation of the nonlinear second differential equation. This approach showed about 30% errors between calculations with and without the second order differential term. The calculation by using the simple first order equation presented shorter times to migrate up to the inner wall of the cyclone than by the second order, which theoretically implies higher separation efficiency. Further comparison is now under evaluation in terms of the detailed grade efficiency.
Keywords
Cyclone; CFD; Leith and Licht equation; Vortex flow; Runge-Kutta method;
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