Publication detail

Study on collision between single coarse particle and wall in viscous media using CFD–DEM

Chen, L. Wang, Y. Klemeš, J.J. Wang, J. Tao, W.

English title

Study on collision between single coarse particle and wall in viscous media using CFD–DEM

Type

journal article in Web of Science

Language

en

Original abstract

Collision between particle and wall is common in granular two-phase flow. This study is helpful to optimise flow conveying system, reduce attrition between materials and devices, and improve development of economy. The collision between a single coarse particle (3 mm in diameter) and wall in a viscous media was investigated by Hertz–Mindlin no-slip contact model based on the coupled computational fluid dynamics and discrete element method (CFD-DEM). Effects of impact velocity and viscosity of media on contact processes and contact force are studied in this research. The calculated results from the collision model are consistent with experimental data, and contact velocity and viscosity of media show significant effects on the contact force of particles. With the reduction of the dimensionless number St, the ratio of unloading time to loading time increases significantly.

English abstract

Collision between particle and wall is common in granular two-phase flow. This study is helpful to optimise flow conveying system, reduce attrition between materials and devices, and improve development of economy. The collision between a single coarse particle (3 mm in diameter) and wall in a viscous media was investigated by Hertz–Mindlin no-slip contact model based on the coupled computational fluid dynamics and discrete element method (CFD-DEM). Effects of impact velocity and viscosity of media on contact processes and contact force are studied in this research. The calculated results from the collision model are consistent with experimental data, and contact velocity and viscosity of media show significant effects on the contact force of particles. With the reduction of the dimensionless number St, the ratio of unloading time to loading time increases significantly.

Keywords in English

Computational fluid dynamics; Discrete element method; Hertz–Mindlin model; Particle–wall collision; Two-phase flow

Released

01.01.2023

Publisher

Elsevier Ltd

Location

Amsterdam

ISSN

0997-7546

Number

97

Pages from–to

199–207

Pages count

9

BIBTEX


@article{BUT180100,
  author="Jiří {Klemeš} and Jin {Wang},
  title="Study on collision between single coarse particle and wall in viscous media using CFD–DEM",
  year="2023",
  number="97",
  month="January",
  pages="199--207",
  publisher="Elsevier Ltd",
  address="Amsterdam",
  issn="0997-7546"
}