Effects of DEM Parameters and Operating Conditions on Particle Dynamics in a Laboratory Scale Rotating Disc

Rotating discs are usually used as granulators in many industrial processes. The efficiency of the granulation process in this device is directly related to the particle motion behavior in different flow regimes. In this work, the granular flow in a rotating disc was investigated experimentally and...

Full description

Saved in:
Bibliographic Details
Published inKONA Powder and Particle Journal Vol. 41; pp. 229 - 241
Main Authors Lima, Rondinelli M., Souza, Gisele M., Brandão, Rodolfo J., Duarte, Claudio R., Barrozo, Marcos A.S.
Format Journal Article
LanguageEnglish
Published Hirakata-sh Hosokawa Powder Technology Foundation 10.01.2024
Subjects
Coefficient of friction
Contact angle
DEM
DEM parameters
Discrete element method
flow regimes
Friction
Granulation
Granulators
Inclination angle
number of contacts
Parameters
Restitution
rotating disc
Rotating disks
Simulation
Stainless steel
Static friction
Velocity
Online AccessGet full text

Cover

More Information
Summary:Rotating discs are usually used as granulators in many industrial processes. The efficiency of the granulation process in this device is directly related to the particle motion behavior in different flow regimes. In this work, the granular flow in a rotating disc was investigated experimentally and numerically. The Discrete Element Method (DEM) was used in the simulations, while Central Composite Designs (CCD) were employed to quantify the effects of DEM input parameters and operating conditions (filling degree (FD), angle of inclination (AI), and rotational speed) on the contacts between particles. The results showed that the particle–wall static friction coefficient had the most significant impact on the studied response. Additionally, the effect of operating variables on the collision force between particles, the angle of departure and particle velocities were successfully investigated, with corresponding DEM simulation predictions. It was also verified that the simulations performed with experimentally measured DEM input parameter values were able to reproduce the flow regimes in the rotating disc.
ISSN:0288-4534
2187-5537
DOI:10.14356/kona.2024016