Numerical simulation of a dense flow cyclone using the kinetic theory of granular flow in a dense discrete phase model

In Sik Hwang, Hyo Jae Jeong, Jungho Hwang

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)129-138
Number of pages10
JournalPowder Technology
Volume356
DOIs
Publication statusPublished - 2019 Nov

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Kinetic theory
Volume fraction
Computer simulation
Particle interactions
Navier Stokes equations

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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title = "Numerical simulation of a dense flow cyclone using the kinetic theory of granular flow in a dense discrete phase model",
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.",
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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 journalArticle

TY - JOUR

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AU - Hwang, In Sik

AU - Jeong, Hyo Jae

AU - Hwang, Jungho

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