Effective use of DEM to design chain conveyor geometry

Žídek, Martin; Rozbroj, Jiří; Jezerská, Lucie; Diviš, Jan; Nečas, Jan; Zegzulka, Jiří; Demmler, Matthias

doi:10.1016/j.cherd.2020.12.017

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…Modern approaches to the numerical modelling of transport systems are based on advanced numerical methods. To adequately describe the transport of bulk materials and powders, it is necessary to understand and describe various phenomena that occur during the transportation of different bulk solids [1][2][3] in order to transport materials to the desired location, production plant, or machine. During transport, we deal with mixing, agglomeration of transported material, the flow behaviour of granular material, recirculation, wear, and many other phenomena that need to be utilized, suppressed, or applied for desired use [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Simulations of granular flow and describing phenomena that occurs during transport, such as wear, mixing, flow, pouring, or particle compaction, have already been included in the simulation in the past. It has been found that we can influence these phenomena with an appropriate design and construction of a transporter [3,2]. There has been significant interest among the scientific community in studying the screw conveyor's conveying process.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Conveying Fine Powders in a Screw Conveyor Using the Discrete Element Method

Motaln,

Lerher

2023

Teh. glas. (Online)

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Due to their high efficiency and spatial utilization, screw conveyors are widely used in pharmacy, agriculture, and industry. Recently, this has made it a popular research subject in the numerical modelling of the transport of bulk solids. Modelling of granular systems at the level of individual particles is mainly possible due to the use of discrete numerical methods. The most common is the use of the Discrete Element Method (DEM), which is still limited from the point of view of simulations on an industrial scale, as increasing the size of the system also increases the cost of simulation. Certain powders with low density, large angles of repose, poor fluidity, and bad flowability can accumulate during transportation, causing inaccurate and non-uniform movement. Additionally, the friction and impact between the particles can cause wear. To address these issues, the present study utilizes the discrete element method to simulate and analyse powder transportation in an inclined screw conveyor using the commercial software ANSYS-ROCKY. Numerous phenomena that arise while transporting and feeding small-sized or irregularly shaped particles, often present in industrial processes, remain insufficiently investigated. This paper aims to analyse the transportation process of adhesive powders in a screw conveyor, with a focus on evaluating the impact of different screw blade speeds on transport. Multiple simulations were conducted, along with the implementation of an additional wear model, to better understand the transport phenomena and wear. An example was used to demonstrate the impact of screw speed on the wear of the transporter due to the interaction between the material and the structure of the conveyor, power consumption, and performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Conveying Fine Powders in a Screw Conveyor Using the Discrete Element Method

Motaln,

Lerher

2023

Teh. glas. (Online)

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Simulation of Transfer Chutes

Ilić¹,

Katterfeld²

2023

Simulations in Bulk Solids Handling

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CFD-DEM Study of Pleated Filter Plugging Process Based on Porous Media Model

et al. 2022

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The pneumatic conveying process of fine particles through filters was studied by CFD-DEM simulation method. The porous media model and porous structure were used to simulate the airflow state and the blocking effect of fine particles when they flowed through the filter. Under different particle feed rates and initial particle velocities, the effects of the plugging rate and settling velocity in pleated filters were analyzed, and the effect of particle deposition height on fluid zone was studied. The results showed that particles should avoid the feed rate of 250–750 g/s and choose the initial particle velocity of 3–6 m/s to achieve lower plugging rate and faster settling velocity. The position of the filter should avoid the particle inlet to avoid the increase of non-uniformity. Timely cleaning of particles in the filter box can improve the filtering performance.

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Effective use of DEM to design chain conveyor geometry

Cited by 3 publications

References 31 publications

Numerical Simulation of Conveying Fine Powders in a Screw Conveyor Using the Discrete Element Method

Numerical Simulation of Conveying Fine Powders in a Screw Conveyor Using the Discrete Element Method

Simulation of Transfer Chutes

CFD-DEM Study of Pleated Filter Plugging Process Based on Porous Media Model

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