numerical analysis of mixing of particles in drum mixers

numerical analysis of mixing of particles in drum mixers.

Numerical analysis of mixing of particles in drum mixers ...

Mar 01, 2016 Mixing of particles in a rotating drum mixer with filling level greater than 50% has been analysed using Discrete Element Method (DEM). An attempt has been made to understand the mechanism of the dead zone formation and the degree of mixing by varying the mixing parameters.

Numerical studies of mixing of ellipsoidal particles in a ...

1 天前 Numerical studies of mixing of ellipsoidal particles in a bladed mixer. ... a different observation is observed in the tumbling mixers such as a rotating drum. He et al. ... Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM) Powder Technol., 274 ...

Numerical simulation and analysis of mixing of polygonal ...

Aug 01, 2017 To study the non-circular effect, the mixing of polygonal particles in a rotating drum is simulated by the soft-sphere imbedded pseudo-hard-particle model (SIPHPM method). Eight particle shapes (N s = 3–10) are filled in the drum at rotating speeds (ω = 0.5–3 π/s) respectively. The mixing process, quality, velocity and kinetic energy are ...

Numerical simulation of tetrahedral particle mixing and ...

Aug 01, 2018 In this work, we use the SIPHPM method to simulate the motion and mixing of tetrahedral particles in a drum mixer. The main purpose of this work is to compare the mixing and motion of regular tetrahedra with those of spheres to determine the effects of shape on particle mixing and motion in drums. ... A DEM-DLM/FD method for direct numerical ...

Numerical simulation of free flowing particles mixing in V ...

高达12%返现 Mar 25, 2019 The aim of this study is to present a novel approach for analyzing the pharmaceutical solid mixing performance of monodisperse particles by a numerical simulation using the mathematical model of rigid solid objects “for a large span of time reached 20 min”. In order to ensure the viability of a numerical simulation, an experimental study of a binary mixture of monodisperse

Numerical study of particle mixing in a lab-scale screw ...

Feb 15, 2017 In case 1-2, an average number of 14,200 biomass particles remains in the mixer during the simulation, and an average number of 101,400 glass beads is simultaneously modeled in the mixer. The number of modeled particles in cases 1-1, 1-3, 2-1 and 2-3 are close to that in case 1-2 since a constant volumetric fill level is remained.

The joint mixing action of the static pre-mixer and the ...

Jul 01, 2018 Numerical analysis of mixing of particles in drum mixers using DEM Adv. Powder Technol. , 27 ( 2016 ) , pp. 531 - 540 Article Download PDF View Record in Scopus Google Scholar

Numerical studies of mixing of ellipsoidal particles in a ...

1 天前 Numerical studies of mixing of ellipsoidal particles in a bladed mixer. ... a different observation is observed in the tumbling mixers such as a rotating drum. He et al. ... Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM) Powder Technol., 274 ...

Mixing of Particles in a Rotating Drum with Inclined Axis ...

Various experimental and numerical studies have been carried out to study the mixing processes inside rotating drums with a horizontal axis of rotation in the past, but little effort has been made to investigate the rotating drums with an inclined axis of rotation, though such inclined drums exist in industrial waste management, food processing, power and pharmaceutical industries.

Mixing and Segregation of Particles in Rotating Drums ...

Mixing of particles in a rotating drum mixer with filling level greater than 50% has been analysed using Discrete Element Method (DEM). An attempt has been made to understand the mechanism of the ...

Numerical analysis of mixing in block‐head mixing screws ...

Nov 08, 2018 To investigate mixing in block‐head mixers from a kinematic viewpoint, the local area stretch and the stretching efficiency were calculated from the set of particles tracked in this analysis. The influence of the number and distribution of the screw flights on the mean values of these parameters is shown in Fig. 17 .

Discrete element analysis of the particle mixing ...

Jan 21, 2019 In this study, a discrete element method is employed to simulate the mixing process of solid particles in a horizontal ribbon mixer with a double U-shaped vessel. A mixing index, i.e. the so-called Lacey index, is adopted to evaluate the mixing quality of particles. The effects of the operational and geometrical parameters including initial loading, particle size, impeller rotational speed ...

Experimental Study on Particle Mixing Process in Rotating Drum

Abstract: The mixing and separating process of different-sized particles in a self-designed rotating drum were explored， where the glass beads were taken as particles. The power consumption of rotating drum under different operating parameters were measured. The results show that the particle separation is more evident when the drum is operated at high fill level， where the small particles ...

Numerical investigation of granular mixing in an intensive ...

中国化学工程学报 ›› 2021, Vol. 32 ›› Issue (4): 241-252. doi: 10.1016/j.cjche.2020.10.036 • Process Systems Engineering and Process Safety • 上一篇下一篇 Numerical investigation of granular mixing in an intensive mixer: Effect of process and structural parameters on

Cohesion-driven mixing and segregation of dry granular ...

Sep 17, 2019 After 7 rotations of the drum, low and medium cohesive particles (cases 10 and 11, respectively) reach almost the same level of mixing as the cohesionless case (i.e., case 9),

Flow and Mixing of Cohesive Particles in a Vertical Bladed ...

Feb 19, 2014 Mixing of fine particles is an important operation to obtain products with controlled properties in the pharmaceutical as well as many other industries. Here, the Discrete Element Method (DEM) is used to simulate the mixing behavior of monosized fine particles in a vertically shafted cylindrical bladed mixer. The mixer impeller consists of two rotating blades of rake angle ϕ fitted to a ...

Dependence of Granular Materials Homogenization on ...

Dec 02, 2016 Here, simulations of granular mixing and segregation via discrete element method (DEM) of two types of mixers are performed and compared with experimental measurements. In the horizontal rotating drum mixer segregation of spherical particles with different diameters is studied.

Numerical simulation of particle screening efficiency of ...

Nov 20, 2021 However, analysis and simulation studies of multi-layer vibrating screens are limited. In this paper, the screening process of wet particles on a multi-layer vibrating screen was simulated by using the discrete element method. The characteristics

(PDF) Mixing of granular materials in slowly rotated ...

Tumbling Mixers: 11,” Chem. Eng. Sci., 19, 191 (1964). It has been demonstrated as well that axial mixing in a Cundall, P. A., and 0. D. L. Strack, “A Discrete Numerical Model drum mixer can be greatly enhanced by altering the protocol for Granular Assemblies,” Geotechnique, 29, 47 (1979).

Numerical studies of mixing of ellipsoidal particles in a ...

1 天前 Numerical studies of mixing of ellipsoidal particles in a bladed mixer. ... a different observation is observed in the tumbling mixers such as a rotating drum. He et al. ... Analysis of the mixing of solid particles in a plowshare mixer via discrete element method (DEM) Powder Technol., 274 ...

Numerical investigation of granular mixing in an intensive ...

Chinese Journal of Chemical Engineering ›› 2021, Vol. 32 ›› Issue (4): 241-252. doi: 10.1016/j.cjche.2020.10.036 • Process Systems Engineering and Process Safety • Previous Articles Next Articles Numerical investigation of granular mixing in an intensive mixer: Effect of process and structural parameters on mixing performance and power consumption

Numerical investigation of granular mixing in an intensive ...

Numerical investigation of granular mixing in an intensive mixer: Effect of process and structural parameters on mixing performance and power consumption[J]. 中国化学工程学报, 2021, 32(4): 241-252. Zhijian Zuo, Shuguang Gong, Guilan Xie. Numerical investigation of granular mixing in an intensive mixer: Effect of process and structural ...

Numerical analysis of restitution coefficient, rotational ...

Jul 30, 2018 On the other hand, according to previous experimental studies [26,27,28] and numerical investigation , by increasing the drum rotation speed, the mean circulation time of the particle decreases and leads to improve of particles mixing in the bed.

Mixing Performance of a Passive Micro-Mixer with Mixing ...

Oct 25, 2021 A new passive micro-mixer with mixing units stacked in the cross flow direction was proposed, and its performance was evaluated numerically. The present micro-mixer consisted of eight mixing units. Each mixing unit had four baffles, and they were arranged alternatively in the cross flow and transverse direction. The mixing units were stacked in four different ways: one step, two step,

Experimental Study on Particle Mixing Process in Rotating Drum

Abstract: The mixing and separating process of different-sized particles in a self-designed rotating drum were explored， where the glass beads were taken as particles. The power consumption of rotating drum under different operating parameters were measured. The results show that the particle separation is more evident when the drum is operated at high fill level， where the small particles ...

Discrete element simulation on mixing of granular ...

The mixing behavior of particles in a rotating drum mixer (RDM) was analyzed by experiment and Distinct Element Method (DEM) simulation in order to discuss the effect of particle density.

A numerical comparison of mixing efficiencies of solids in ...

To study the mixing effect of powder particles in a high speed shear mixer (HSSM) and cylinder mixer (CM), numerical simulation based on discrete element method was adopted in this work.

Flow and Mixing of Cohesive Particles in a Vertical Bladed ...

Feb 19, 2014 Mixing of fine particles is an important operation to obtain products with controlled properties in the pharmaceutical as well as many other industries. Here, the Discrete Element Method (DEM) is used to simulate the mixing behavior of monosized fine particles in a vertically shafted cylindrical bladed mixer. The mixer impeller consists of two rotating blades of rake angle ϕ fitted to a ...

Effect of moving baffle on average velocity and mixing of ...

Apr 13, 2020 Adding a moving baffle to the drum is a new way to enhance the motion and mixing of particles in rotating drums. To obtain its influence on binary particles, horizontal rotating drums provided with a moving baffle were investigated by discrete element method (DEM). At Ω=15 r/min, increasing the length of moving baffle can increase the fluctuation amplitude of average particle velocity. At Ω ...

Geometrical data of the block-head mixers. Download Table

Download Table Geometrical data of the block-head mixers. from publication: Numerical analysis of mixing in block‐head mixing screws The research reported here used 3D non‐Newtonian flow ...

(PDF) Understanding Size Segregation in Tumbling Mills

This study investigates the mixing of monodisperse, bidisperse, tridisperse, and polydisperse solid particles in a rotary drum using the discrete element method.

DEM simulation of heat transfer of binary-sized particles ...

Nov 28, 2018 A numerical simulation was conducted by using discrete element method and granular heat conduction model to investigate the heat transfer mechanism inside a horizontal rotating drum. A particulate system containing binary-size spherical particles heating up through the wall was considered as the simulation domain. Radial segregation phenomenon and heat transfer of the particulate system

Determination the efficiency of open mixing screws ...

May 30, 2020 M. K. Saeed and M. S. Sira, Mixing study of non-spherical particles using DEM, Powder Technology, 344 (2019) 617–627. Article Google Scholar [12] R. K. Soni, R. Mohanty, S. Mohanty and B. K. Mishra, Numerical analysis of mixing of particles in drum mixers using DEM, Advanced Powder Technology, 27 (2) (2016) 531–540.

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