Mathematical modeling of the coating process

G Toschkoff, JG Khinast - International journal of pharmaceutics, 2013‏ - Elsevier
Coating of tablets is a common unit operation in the pharmaceutical industry. In most cases,
the final product must meet strict quality requirements; to meet them, a detailed …

A dynamical systems approach to mixing and segregation of granular materials in tumblers

SW Meier, RM Lueptow, JM Ottino - Advances in Physics, 2007‏ - Taylor & Francis
The physics of granular matter is one of the big questions in science. Granular matter serves
as a prototype of collective systems far from equilibrium and fundamental questions remain …

Segregation of granular particles by mass, radius, and density in a horizontal rotating drum

M Arntz, HH Beeftink, WK den Otter, WJ Briels… - AIChE …, 2014‏ - Wiley Online Library
The impact of particle properties on segregation and mixing of bidisperse granular beds in a
rotating horizontal drum have been studied by discrete element method (DEM) simulations …

The role of discontinuities in mixing

R Sturman - Advances in applied mechanics, 2012‏ - Elsevier
Chaotic advection in fluids is traditionally associated with stretching and folding. Although
this is an effective and widely used technique to produce efficient mixing, it is not the only …

Axial segregation characteristics and size-induced flow behavior of particles in a novel rotary drum with curved sidewalls

Q Miao, W Zhu, Y Cao, P Huang, C Hu, M Jia - Particuology, 2024‏ - Elsevier
Particle mixing and segregation are common phenomena in rotary drums, which are
challenging to be controlled and driven artificially in powder technology. In this work, the …

Particle shape-induced axial segregation of binary mixtures of spheres and ellipsoids in a rotating drum

SY He, JQ Gan, D Pinson, AB Yu, ZY Zhou - Chemical Engineering Science, 2021‏ - Elsevier
Particles with different properties such as size and shape in rotating drums tend to segregate
axially to different sections. In this work, we report an interesting phenomenon that for …

Particle dynamics in avalanche flow of irregular sand particles in the slum** regime of a rotating drum

H Yang, BF Zhang, R Li, G Zheng, V Zivkovic - powder technology, 2017‏ - Elsevier
Slowly rotating drums are important due to their industrial application, but also as a simple
model system for studying transient avalanche processes. A speckle visibility spectroscopy …

Size-induced axial segregation of ellipsoids in a rotating drum

S He, Y Wang, Z Zhou, J Gan, A Yu, D Pinson - Powder Technology, 2023‏ - Elsevier
Granular materials of different sizes and shapes in a rotating drum tend to segregate in the
axial direction. In the past, extensive numerical studies have been conducted for spherical …

Parameters and scalings for dry and immersed granular flowing layers in rotating tumblers

F Pignatel, C Asselin, L Krieger, IC Christov… - Physical Review E …, 2012‏ - APS
The scaling properties of the continuous flowing layer in a quasi-2D circular tumbler half
filled with a granular material are studied experimentally in the presence of three different …

Cross-sectional and axial flow characteristics of dry granular material in rotating drums

HT Chou, CF Lee - Granular Matter, 2009‏ - Springer
Cross-sectional and axial flow behaviors of dry granular material in rotating drums are
closely related to the dynamic characteristics and velocity distributions between the surface …