DEM numerical investigation of wet particle flow behaviors in multiple-spout fluidized beds

Tang, Tianqi; He, Yaning; Tai, Tong; Wen, Dongsheng

doi:10.1016/j.ces.2017.06.025

Cited by 53 publications

(20 citation statements)

References 52 publications

(40 reference statements)

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“…Moreover, current cell size and number is almost three times larger than particle diameter for accuracy. Besides, mesh independence was applied in our previous work 40 for validating rational and accuracy of mesh size. Gas velocities in the spouting and fluidizing regions are listed in Table 1.…”

Section: Model Descriptionmentioning

confidence: 99%

An application of factor analysis in wet particle systems: Rolling friction and cohesive liquid controlling performances

Tang

Wang

Ren

et al. 2020

Asia-Pacific J Chem Eng

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Fluidized beds are widely used in many chemical engineering industrials, and flow behaviors of multiphase flow have always been the focus of research. This paper presented how rolling friction and cohesive liquid affected wet particle flow behaviors by experiments, simulation, and data analyses. Experiments were conducted for applying a suitable range of rolling friction coefficient. A discrete element method, well validated by comparing experimental data, was developed and demonstrated that μ r = 0.125 was a good choice for particles applied in this work. Data from numerical results were well analyzed by factor analysis, where explained interaction effect of two factors on fluidized beds. Factor analyses reflected that dominating factor and interaction effect on flow behaviors vary instead of single control factor in different regions. These findings have clearly showed importance and effect of microscopic parameter collision characteristics on the hydrodynamic behaviors in fluidized beds. Thus, rolling friction constitutes should be carefully considered to ensure that theoretical results are accurate.

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Section: Model Descriptionmentioning

confidence: 99%

An application of factor analysis in wet particle systems: Rolling friction and cohesive liquid controlling performances

Tang

Wang

Ren

et al. 2020

Asia-Pacific J Chem Eng

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“…Numerical simulation methods and computational fluid dynamics have become popular in the field of gas‐solid two‐phase flow. The air‐solid flow behavior was investigated using the two‐fluid model (TFM) approach and the computational fluid dynamics–discrete element method (CFD‐DEM) .…”

Section: Introductionmentioning

confidence: 99%

“…The methods that are adopted in the simulation of gas‐solid flows are the TFM and the DEM. The coupled CFD‐DEM simulations, often termed as Euler‐Lagrange method, have been used by several research groups for modeling spouted beds . In recent years, the DEM method was applied by Pietsch et al in the modeling of a 3D prismatic spouted bed with two horizontal gas inlets.…”

Section: Introductionmentioning

confidence: 99%

“…They analyzed the effect of the grid size on particle motion and suggested a minimum ratio of grid size to particle diameter for gas‐particle flow simulations. A modified DEM was applied by Tang et al to investigate hydrodynamic characteristics of dry and wet particles. Simulations of the dry and wet particles were conducted in single‐ and double spouted fluidized beds.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Longitudinal Vortex Generator Configuration on the Hydrodynamics in a Novel Spouted Bed

Huang

Zhang

et al. 2018

Chem Eng & Technol

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The gas-solid flow in a cylindrical spouted bed with a pair of spherical longitudinal vortex generators (LVGs) was numerically investigated by a two-fluid model with kinetic theory for granular flow. Simulations and analyses were conducted on five types of spouted beds: a conventional spouted bed without disturbance units as well as spouted beds with a pair of LVGs in which the radius of spheres installed on the LVGs had four different dimensions. Results of the computational fluid dynamics demonstrate that the fountain height decreases with larger radius, and the influence range of the longitudinal vortex increases with the greater radius, both for the gas phase and particle phase. The turbulent kinetic energy of the gas phase along the radial and axial directions in the spouted bed was also promoted significantly by the longitudinal vortex and increased with larger radius, which is due to the higher LVG volume.

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“…The authors of [29,30], who performed an accurate analysis of the usefulness of various variants of the Discrete Element Method, give a precise description of DEM's development over the years. Special approach is used to simulate the movement of wet particles [2,26]. In this paper the focus is intentionally shifted from the discrete model (DEM) to the analytical one, as only the latter makes it possible to effectively simulate the movement of a vast number of transported particles.…”

Section: Introductionmentioning

confidence: 99%

Analytical modelling of the linear wear of the inside of a pipe transporting loose materials

Chmielowiec¹,

Homik²

2018

Diagnostyka

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This paper presents the results of an analysis of the linear wear of the inside of a pipe transporting loose materials. The aim is to present a mathematical model simulating the abrasive wear of individual elements of a transport pipe, depending on the volume of transported material. The model presented in this paper was developed based on the measurement data obtained from a dismantled transport system used in a railway handling terminal.

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DEM numerical investigation of wet particle flow behaviors in multiple-spout fluidized beds

Abstract: This is a repository copy of DEM numerical investigation of wet particle flow behaviors in multiple-spout fluidized beds.

Cited by 53 publications

References 52 publications

An application of factor analysis in wet particle systems: Rolling friction and cohesive liquid controlling performances

An application of factor analysis in wet particle systems: Rolling friction and cohesive liquid controlling performances

Influence of Longitudinal Vortex Generator Configuration on the Hydrodynamics in a Novel Spouted Bed

Analytical modelling of the linear wear of the inside of a pipe transporting loose materials

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