Abstract
In this study, the dense flow characteristics in a Lapple cyclone were investigated using numerical simulations. At a high solid volume fraction, four-way coupling must be applied to account for solid volume fraction in Navier-Stokes equations and particle-particle collisions, which are not considered in one- and two-way couplings approaches. A four-way coupling method, the dense discrete phase model (DDPM), which accounts for the solid volume fraction, was used in this study. The kinetic theory of granular flow (KTGF) in the DDPM was utilized to compute particle-particle interactions. The calculated results obtained using DDPM-KTGF were validated using experimental results reported previously. These results were compared with numerical data obtained from the discrete element model (DEM), which is another four-way coupling method. DDPM-KTGF could be successfully applied to situations involving high solid volume fractions with a significantly lower computational time than that required for DEM.
| Original language | English |
|---|---|
| Pages (from-to) | 129-138 |
| Number of pages | 10 |
| Journal | Powder Technology |
| Volume | 356 |
| DOIs | |
| Publication status | Published - 2019 Nov |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
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Numerical simulation of a dense flow cyclone using the kinetic theory of granular flow in a dense discrete phase model. / Hwang, In Sik; Jeong, Hyo Jae; Hwang, Jungho.
In: Powder Technology, Vol. 356, 11.2019, p. 129-138.Research output: Contribution to journal › Article
TY - JOUR
T1 - Numerical simulation of a dense flow cyclone using the kinetic theory of granular flow in a dense discrete phase model
AU - Hwang, In Sik
AU - Jeong, Hyo Jae
AU - Hwang, Jungho
PY - 2019/11
Y1 - 2019/11
N2 - In this study, the dense flow characteristics in a Lapple cyclone were investigated using numerical simulations. At a high solid volume fraction, four-way coupling must be applied to account for solid volume fraction in Navier-Stokes equations and particle-particle collisions, which are not considered in one- and two-way couplings approaches. A four-way coupling method, the dense discrete phase model (DDPM), which accounts for the solid volume fraction, was used in this study. The kinetic theory of granular flow (KTGF) in the DDPM was utilized to compute particle-particle interactions. The calculated results obtained using DDPM-KTGF were validated using experimental results reported previously. These results were compared with numerical data obtained from the discrete element model (DEM), which is another four-way coupling method. DDPM-KTGF could be successfully applied to situations involving high solid volume fractions with a significantly lower computational time than that required for DEM.
AB - In this study, the dense flow characteristics in a Lapple cyclone were investigated using numerical simulations. At a high solid volume fraction, four-way coupling must be applied to account for solid volume fraction in Navier-Stokes equations and particle-particle collisions, which are not considered in one- and two-way couplings approaches. A four-way coupling method, the dense discrete phase model (DDPM), which accounts for the solid volume fraction, was used in this study. The kinetic theory of granular flow (KTGF) in the DDPM was utilized to compute particle-particle interactions. The calculated results obtained using DDPM-KTGF were validated using experimental results reported previously. These results were compared with numerical data obtained from the discrete element model (DEM), which is another four-way coupling method. DDPM-KTGF could be successfully applied to situations involving high solid volume fractions with a significantly lower computational time than that required for DEM.
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U2 - 10.1016/j.powtec.2019.08.008
DO - 10.1016/j.powtec.2019.08.008
M3 - Article
AN - SCOPUS:85070827734
VL - 356
SP - 129
EP - 138
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
ER -