experimental and dem studies on the particle mixing

Experimental and DEM studies on the particle mixing ...

Jun 01, 2017  Experimental and DEM studies on the particle mixing performance in rotating drums: Effect of area ratio. ... The mixing processes of equal-sized ABS beads in a rotating drum were simulated by DEM. A series of experiments such as high rebound test, friction and wear test, stacking angle test and L-box test were designed to measure the contact ...

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Experimental and DEM studies on the particle mixing ...

Experimental and DEM studies on the particle mixing performance in rotating drums: Effect of area ratio. Author links open overlay panel Xiangwu Xiao a Yuanqiang Tan b Hao Zhang c Rong Deng a Shengqiang Jiang a. Show more. Share.

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Experimental study and DEM analysis of granular ...

Mar 15, 2020  Mixing quality in mono and bidisperse systems under the influence of particle shape: a numerical and experimental study Powder Technol. , 308 ( 2017 ) , pp. 101 - 113 , 10.1016/j.powtec.2016.11.072

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Virtual Experiments of Particle Mixing Process with the ...

Apr 25, 2021  is applied to high shear particle mixing problems, and a series of parametric studies are conducted. The local average mixing index is the main criterion to evaluate the homogeneity of the mixture, which will be used to optimize the particle mixing process for homogeneous mixtures. 2. Algorithm and Formulation 2.1. Smoothed Particle ...

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CFD-DEM study on the mixing characteristics of binary ...

The fluidization of quartz in the fluidized bed has great influence on the combustion and gasification of refuse-derived fuel (RDF). The combined computational fluid dynamics (CFD) and discrete element method (DEM) approach was used to explore the gas-solid hydrodynamics and mixing characteristics in a three-dimensional fluidized bed.

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An experimentally validated DEM study of powder mixing in ...

Apr 15, 2017  This study evaluates the predictive capabilities of a visco-elasto-plastic frictional adhesive DEM model [25] for the simulation of aluminosilicate powder mixing in a laboratory scale mixer. The mixer of choice was the MLH12 (WAM Group) paddle blade mixer, which is a laboratory scale mixer with a capacity of 12 l.

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Experimental Study of the Effect of Particle Density on ...

The particle mixing behavior has been investigated experimentally in a spout-fluid bed. The bed material used is polypropylene particles, and the tracer employed is chosen from silica gel, mung beans, and glass beads. During all experiments, the completely segregated arrangement of particles is adopted as the initial packing condition. The gas velocity varies to cover internal jet, minimum ...

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Virtual Experiments of Particle Mixing Process with the ...

Apr 25, 2021  is applied to high shear particle mixing problems, and a series of parametric studies are conducted. The local average mixing index is the main criterion to evaluate the homogeneity of the mixture, which will be used to optimize the particle mixing process for homogeneous mixtures. 2. Algorithm and Formulation 2.1. Smoothed Particle ...

get price

Experimental Study of the Effect of Particle Density on ...

The particle mixing behavior has been investigated experimentally in a spout-fluid bed. The bed material used is polypropylene particles, and the tracer employed is chosen from silica gel, mung beans, and glass beads. During all experiments, the completely segregated arrangement of particles is adopted as the initial packing condition. The gas velocity varies to cover internal jet, minimum ...

get price

Particulate Composite Mixing Processes SBIR.gov

Our innovative approach consists of Discrete Element Method (DEM) and Dissipative Particle Dynamic (DPD) coupled algorithms, reliable experimental and numerical measurement methods for validation of the proposed algorithms, a multiscale modeling/characterization approach to an objective homogeneity metrics, and a viable scale-up technique for ...

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Mixing quality in mono- and bidisperse systems under the ...

In this study DEM-CFD simulations relying on drag force models that consider particle shape and orientation, of four different particle groups, including spheres, cubes, elongated cuboids and plates have been carried out. The Lacey mixing index was determined and the results compared with analogously conducted experiments.

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Study of mixing and discharging of dry particles in a ...

The Discrete Element Method (DEM) is used to simulate the mixing and discharging processes of binary particles in a laboratory truck mixer. The contact parameters in the DEM model are calibrated by experiments and then used to simulate the particle mixing and discharging processes in truck mixer under seven groups of operation parameters.

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CONTROLLING MIXING AND SEGREGATION IN TIME

the discrete element method (DEM) – one type of particle dynamics (PD) technique – to investigate the mixing and segregation of granular material in some prototypical solid han- dling devices, such as a rotating drum and chute.

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Abstract: Modeling Mixing of Cohesive Particulate Systems ...

Experiments and simulations have been conducted to both qualitatively and quantitatively evaluate mixing of granular materials. Some standard simulation tools for modeling granular solids mixing include Discrete Element Method (DEM) and Finite Element Analysis [1, 2]. DEM has been extensively used in the study of granular solids processing.

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Theoretical Studies of the Interaction between Screw ...

Feb 18, 2021  Experimental tests and theoretical studies of the mixing process of solutions are presented in work [22]. ... Dynamics based studies of the particle motion in contact with the screw surface are presented on the example of ... out by Rathod and Kokini [34]. Based on the numerical analysis with the use of DEM and the experimental results, Pezo et ...

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Non-spherical particle mixing behaviors by spherical inert ...

Nov 16, 2019  where m p is the mass of particle, kg; r is the position of particle center, m; v p is the translational velocity of particle, m/s; F c is the contact force, N.. In this study, each non-spherical particle is modeled by the multi-sphere method (Favier et al. 1999).In the multi-sphere method, the contact force and torque acting on a non-spherical particle are obtained by calculating the sum of ...

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肖湘武 - yjsglxt.xtu.cn

近年发表的论文: 1. 谭援强,肖湘武,张江涛,姜胜强.SLS预热温度下尼龙粉末的接触离散元模型参数的确定及其流动特性分析.力学学报.(2018,导师第一). 2. X.Xiao,Y.Tan,H.Zhang,R.Deng,S.Jang.Experimental and DEM studies on the particle mixing performance in rotating drums: Effect of area ratio.Powder Technology.(2017)

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Mixing and Segregation in a Rotating Cylinder: CFD ...

performed a DEM simulation to study the formation of dead zones and the degree of mixing under different mixing parameters. Simulations were done with more than 50 % filling degree, and results predicted that the packing arrangement and the particle size considerably impacted the

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RADIAL AND AXIAL MIXING OF PARTICLES IN A DRY

Experiments were conducted in a laboratory batch ball mill and two experimental programs were used to study the mixing process. Radial mixing of particles was observed to increase with increasing mill speed. For a mill used in this study, mixing of particles at Nc=90% took almost half the total time taken at Nc=75% to reach completion.

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CFD-DEM modelling of mixing and segregation of binary ...

Jan 24, 2019  Extensive studies have been conducted in the past to understand the effects of particlesize and density on the mixing and segregation, but the effect of particle shape has not been well addressed. Therefore, in the present work, CFD-DEM approach is employed to perform a numerical analysis of the effect of particle shape on the particle mixing ...

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CFD–DEM study of mixing and dispersion behaviors of solid ...

Three-dimensionally coupled computational fluid dynamics (CFD) and discrete element method (DEM) are used to investigate the gas–solid hydrodynamics and mixing characteristics of a three-dimensional rectangular bubbling fluidized bed. The numerical study is conducted referring to the quasi-3D experimental apparatus investigated by Goldschmidt et al. [1]. The simulation results turn out that ...

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Virtual Experiments of Particle Mixing Process with the ...

Apr 25, 2021  is applied to high shear particle mixing problems, and a series of parametric studies are conducted. The local average mixing index is the main criterion to evaluate the homogeneity of the mixture, which will be used to optimize the particle mixing process for homogeneous mixtures. 2. Algorithm and Formulation 2.1. Smoothed Particle ...

get price

Experimental Study of the Effect of Particle Density on ...

The particle mixing behavior has been investigated experimentally in a spout-fluid bed. The bed material used is polypropylene particles, and the tracer employed is chosen from silica gel, mung beans, and glass beads. During all experiments, the completely segregated arrangement of particles is adopted as the initial packing condition. The gas velocity varies to cover internal jet, minimum ...

get price

Particulate Composite Mixing Processes SBIR.gov

Our innovative approach consists of Discrete Element Method (DEM) and Dissipative Particle Dynamic (DPD) coupled algorithms, reliable experimental and numerical measurement methods for validation of the proposed algorithms, a multiscale modeling/characterization approach to an objective homogeneity metrics, and a viable scale-up technique for ...

get price

Mixing and Segregation in a Rotating Cylinder: CFD ...

performed a DEM simulation to study the formation of dead zones and the degree of mixing under different mixing parameters. Simulations were done with more than 50 % filling degree, and results predicted that the packing arrangement and the particle size considerably impacted the

get price

Mixing quality in mono- and bidisperse systems under the ...

In this study DEM-CFD simulations relying on drag force models that consider particle shape and orientation, of four different particle groups, including spheres, cubes, elongated cuboids and plates have been carried out. The Lacey mixing index was determined and the results compared with analogously conducted experiments.

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Evaluation of Particle Shape Effect for Mixing Behaviour ...

The particle flow observed from the DEM agreed with experimental result, and the validity of these techniques and parameters used in the DEM was confirmed. In order to analyze the mixing mechanism of spherical and cube-shaped particles, mixing behavior in

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Experimental Study on the Mixing of Binary Polymer ...

ABSTRACT. In this study an experimental study of mixing process of free flowing polymers binary mixtures at different densities and colours in three mixers was investigated. The state of mixing of solids was studied by analysing the variation of the proportions of the marked particles with time and position in the bed or in the mixer.

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CFD-DEM modelling of mixing and segregation of binary ...

Jan 24, 2019  Extensive studies have been conducted in the past to understand the effects of particlesize and density on the mixing and segregation, but the effect of particle shape has not been well addressed. Therefore, in the present work, CFD-DEM approach is employed to perform a numerical analysis of the effect of particle shape on the particle mixing ...

get price

Non-spherical particle mixing behaviors by spherical inert ...

Nov 16, 2019  where m p is the mass of particle, kg; r is the position of particle center, m; v p is the translational velocity of particle, m/s; F c is the contact force, N.. In this study, each non-spherical particle is modeled by the multi-sphere method (Favier et al. 1999).In the multi-sphere method, the contact force and torque acting on a non-spherical particle are obtained by calculating the sum of ...

get price

肖湘武 - yjsglxt.xtu.cn

近年发表的论文: 1. 谭援强,肖湘武,张江涛,姜胜强.SLS预热温度下尼龙粉末的接触离散元模型参数的确定及其流动特性分析.力学学报.(2018,导师第一). 2. X.Xiao,Y.Tan,H.Zhang,R.Deng,S.Jang.Experimental and DEM studies on the particle mixing performance in rotating drums: Effect of area ratio.Powder Technology.(2017)

get price

CFD–DEM study of mixing and dispersion behaviors of solid ...

Three-dimensionally coupled computational fluid dynamics (CFD) and discrete element method (DEM) are used to investigate the gas–solid hydrodynamics and mixing characteristics of a three-dimensional rectangular bubbling fluidized bed. The numerical study is conducted referring to the quasi-3D experimental apparatus investigated by Goldschmidt et al. [1]. The simulation results turn out that ...

get price

Evaluation of Particle Shape Effect for Mixing Behaviour ...

DOI: 10.4164/SPTJ.52.445 Corpus ID: 107876752. Evaluation of Particle Shape Effect for Mixing Behaviour in a Rotating Drum by DEM Simulation @article{Yamamoto2015EvaluationOP, title={Evaluation of Particle Shape Effect for Mixing Behaviour in a Rotating Drum by DEM Simulation}, author={Michinori Yamamoto and S. Ishihara and Junya Kano}, journal={Journal of The Society of

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Particle flow, mixing and segregation - ARC Research Hub ...

3) Powder mixing and segregation in different mixers. This project aims to develop a method to generally predict the mixing performance of particles of different types as a function of particle properties, operational conditions and geometry. Different simulation techniques will be employed in connection with our previous studies.

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Granular flow in static mixers by coupled DEM/CFD

in many studies in order to characterize the mixing per-formance in different systems [8–11]. A detailed review and definitions of the quality of a mixture, the mixing mechanisms, the possibilities for the choice of solid mixer, the experimental assessment of homogeneity and mixing indexes are

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