Simulation of dynamic processes on flexible filamentous particles in the transverse section of a rotary dryer and its comparison with ideo-imaging experiments

Geng, Fan; Li, Yimin; Wang, Xinyong; Yuan, Zhulin; Yan, Yaming; Luo, Dongmei

doi:10.1016/j.powtec.2010.10.027

Cited by 46 publications

(19 citation statements)

References 29 publications

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“…In the last years, tubular particles were created by a number of researchers [31,7,[10][11][12][13]21,8,15,29,28,24]. The accuracy of the simulations with these particles varies greatly.…”

Section: Tubular Particles In Demmentioning

confidence: 99%

“…The same method was used to create rigid fibres and rodlike particles [10,11,28]. Flexible filamentous particles composed out of chains of rigid bodies connected through ball and socket joints were developed by Geng et al [8], Guo et al [12,13], Grof and Štěpánek [11]. Guo et al [15] compared glued-spheres particles and true cylindrical particles and concluded that for smooth particles the most realistic results are obtained with cylindrical particles.…”

Section: Tubular Particles In Demmentioning

confidence: 99%

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Discrete element modelling of bendable tubes

Leblicq

Vanmaercke

Ramón

et al. 2015

International Journal of Mechanical Sciences

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a b s t r a c tComputer simulations are becoming increasingly important for the optimisation of various processes since they can significantly reduce the development time and costs. The discrete element method (DEM) offers a powerful tool for simulating the interactions of large numbers of particles. The method has proven its usefulness for many applications where granular and spherical particles are handled. Very recently DEM, was used to simulate the interactions of tubular particles. While the existing linear elastic models could describe the reversible bending and denting of these particles in a realistic way for small deformations, they are inadequate for describing the bending and compression behaviour at higher forces. In this region, buckling phenomena become important. Therefore, new phenomenological models, inspired by the collapse of steel tubes due to ovalisation of the cross section and the formation of plastic hinges, have been implemented for metal and synthetic plastic tubes. Using these models virtual, bendable tubes were created in the DEMeterþ þ software. The DEM parameters were calibrated for copper and PVC tubes based on combined bending and denting tests conducted using an Universal Testing System. The simulations were in good agreement with the measurements (R 2 4 0:91). This realistic DEM model of bending can, in future research, be used to simulate the processing of large numbers of tubular particles (e.g. the processing of crop stems).

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“…In the last years, tubular particles were created by a number of researchers [31,7,[10][11][12][13]21,8,15,29,28,24]. The accuracy of the simulations with these particles varies greatly.…”

Section: Tubular Particles In Demmentioning

confidence: 99%

Section: Tubular Particles In Demmentioning

confidence: 99%

Discrete element modelling of bendable tubes

Leblicq

Vanmaercke

Ramón

et al. 2015

International Journal of Mechanical Sciences

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“…In DEM, Newton's second law is applied in order to determine the trajectories, forces, and velocities of each particle. In recent years, DEM simulations have been used for many researchers to simulate processes involving flighted rotating drums . However, increasing the number of particles in the simulations entails a higher computational cost, making it unaffordable in large‐scale processes.…”

Section: Introductionmentioning

confidence: 99%

Eulerian study of flights discharge in a rotating drum

et al. 2018

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The theoretical modelling of flow in a rotary drum is still a great challenge. In this study, the charge of solids in the flights as a function of angular position, rotational speed, number of flights, and granular material was investigated. The prediction of the flow of solids by simulation using a Euler‐Euler approach was also investigated. The simulated results were compared with experimental data using granulated sugar and glass beads as material, with the rotary drum operating with 12 and 15 flights. The results showed that the Eulerian approach along with the kinetic theory of granular flow (KTGF) agreed with the experimental results obtained with the rotary drum operating in several configurations, with average deviations between numerical and experimental data being smaller than 15 %. The CFD approach allowed the development of a more generalized model compared to the empirical and geometrical equations used in the literature to predict the solids holdup.

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“…The Lagrangian approach is based on the particle-particle interaction forces, while the Euler-Euler approach treats the phases mathematically as continuous and interpenetrating. The Lagrangian approach, which is used in the Discrete Element Method (DEM), has already been employed in several simulation studies of flighted rotating drums [5,[10][11][12]. In this approach, each particle trajectory is calculated considering all the active forces, providing information about particles at the microscopic level and describing the individual trajectory of a particle.…”

Section: Introductionmentioning

confidence: 99%