A generalised mixing index in distinct element method simulation of vibrated particulate beds

Asmar, B. N.; Langston, Paul; Matchett, A.J.

doi:10.1007/s10035-002-0112-8

Cited by 57 publications

(15 citation statements)

References 26 publications

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“…6 depicts the Lacey index versus time for both initial loading cases. These results show that the Lacey index ascended at the beginning and reached a plateau after 10 s. Observing a plateau in the mixing performance of the plowshare mixer is consistent with the previous studies conducted on various types of mixers in powder mixing operations [2,5,18,24].…”

Section: Effect Of Initial Loadingsupporting

confidence: 93%

“…DEM was originally pioneered by Cundall and Strack [23] for the study of two-dimensional (2D) slope stability problems and granular flow simulations. Later, it was applied to various simulation models in many fields such as granular mixing [24][25][26], dragline excavation [25], ball mill operation [27], and silo filling [28]. In fact, DEM simulates the dynamics of each particle individually and numerically integrates their accelerations, which depend on the sum of all forces, including contact and gravity forces.…”

Section: Discrete Element Methods (Dem)mentioning

confidence: 99%

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Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM)

2015

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Section: Effect Of Initial Loadingsupporting

confidence: 93%

Section: Discrete Element Methods (Dem)mentioning

confidence: 99%

Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM)

2015

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“…For monosized “virtual” near‐spherical monosized structures of roundness close to unity, typical values between 6 and 7 are attained in Ref. and higher for distorted near‐spherical shaped salt beads in Ref. used herein.…”

Section: Structural Characterization and Airflow Measurementmentioning

confidence: 85%

Airflow measurement across negatively infiltration processed porous aluminum structures

2019

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Detailed structural characterization and experimental measurement of airflow across open‐celled aluminum foam structures with near‐spherical cells varying in pore sizes and interstices are presented herein. The aluminum foam structures were produced by infiltrating liquid aluminum into convergent gaps created by packed beds of near‐spherical hydrosoft salt beds varying in particle sizes, packing densities, and infiltration pressures. A quantitative assessment of the unit pressure drops developed across these structures show that viscous and inertial terms of these structures were observed to greatly depend on the shape and structural macroscopic parameters of the porous medium. © 2019 American Institute of Chemical Engineers AIChE J, 65: 1355–1364, 2019

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“…This motivated several researchers worldwide to develop a wide range of mixing indices to evaluate the quality of mixing. Of these, the Lacey mixing index (LMI) [26,27], generalized mean mixing index (GMMI) [28], and modified generalized mean mixing index (MGMMI) [29] are the most commonly used mixing indices. LMI is a sample-based mixing index that yields statistical analysis considering the standard deviation, variation, and the coefficient of variation.…”

Section: Overview Of Mixing Indices and Subdomain Mixing Index (Smi)mentioning

confidence: 99%

Effect of Rotating Cylinder on Mixing Performance in a Cylindrical Double-Ribbon Mixer

2019

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Uniform mixing is highly essential in the food manufacturing, pharmaceutical, chemical, and cement industries. However, based on the various process requirements, these industries use different mixers to achieve their commercial outputs. Most of these industries rely on sample-based verification of the mixing index, which may not produce accurate results. Adopting a non-sampling mixing index method is more accurate. In this study, we used the discrete element method (DEM) to simulate the mixing of multiple components contained in a typical commercial whey protein mixture. An effective non-sampling mixing index, the subdomain-based mixing index (SMI), was incorporated to assess the mixing levels. The main motivation for this study was to acquire a high mixing index in the least possible mixing time to boost the manufacturing rate. For this purpose, a half-filled cylindrical double ribbon mixer was simulated, and the SMI outputs are presented for the following four cases: (1) rotating ribbon, (2) rotating cylinder, (3) rotating cylinder with a static ribbon, and (4) rotating cylinder and ribbon. For the given simulation conditions, the SMI values ranged from 0 (segregation condition) to 0.91–0.94 (fully randomly mixed condition) within a time range of 0–60 s.

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A generalised mixing index in distinct element method simulation of vibrated particulate beds

Cited by 57 publications

References 26 publications

Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM)

Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM)

Airflow measurement across negatively infiltration processed porous aluminum structures

Effect of Rotating Cylinder on Mixing Performance in a Cylindrical Double-Ribbon Mixer

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