Preliminary Investigation on the Capability of eXtended Discrete Element Method for Treating the Dripping Zone of a Blast Furnace

Baniasadi, Maryam; Peters, Bernhard

doi:10.2355/isijinternational.isijint-2017-344

Cited by 12 publications

(15 citation statements)

References 46 publications

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“…The gas phase tends to replace the liquid phase at the entrance of the gas phase. This behaviour creates a dry zone, whose size is proportional to the gas inlet magnitude [54]. It can also be concluded that the liquid iron is pushed more towards the centre than the slag phase due to the larger drag force between liquid iron and gas phase.…”

Section: Dripping Zone and Hearthmentioning

confidence: 92%

“…The presence of solid particles besides the fluid phases makes the coupled discrete-continuous methods suitable for this application. In our previous study [54], the XDEM approach has been validated by comparing the numerical results with the experimental data [55] for a case representing the dripping zone. The experimental setup and the simulation domain are shown in Figure 10.…”

Section: Dripping Zone and Hearthmentioning

confidence: 99%

See 1 more Smart Citation

The Extented Discrete Element Method (XDEM): An Advanced Approach to Model Blast Furnace

Peters¹,

Baniasadi²,

Baniasadi³

2018

Iron Ores and Iron Oxide Materials

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The blast furnace iron making is the oldest but still the main method to produce liquid iron through sequential reduction processes of iron ore materials. Despite the existence of several discrete and continuous numerical models, there is no global method to provide detailed information about the processes inside the furnaces. The extended discrete element method known as XDEM is an advance numerical tool based on Eulerian-Lagrangian framework which is able to cover more information about the blast furnace process. Within this platform, the continuous phases such as gas and liquid phases are coupled to the discrete entities such as coke and iron ore particles through mass, momentum and energy exchange. This method has been applied to the shaft, cohesive zone, dripping zone and hearth of the blast furnace. In this chapter, the mathematical and numerical methods implemented in the XDEM method are described, and the results are discussed.

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Section: Dripping Zone and Hearthmentioning

confidence: 92%

Section: Dripping Zone and Hearthmentioning

confidence: 99%

The Extented Discrete Element Method (XDEM): An Advanced Approach to Model Blast Furnace

Peters¹,

Baniasadi²,

Baniasadi³

2018

Iron Ores and Iron Oxide Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…The second method is suitable for multiphase systems, including a disperse or particulate phase, in which a continuum method is applied to the continuous phases and a particle tracking method to the discrete phase . In our previous works,, we developed an Eulerian‐Lagrangian method to model trickle bed reactors, including three phases of gas‐liquid‐solid. In our paper, hydrodynamic parameters such as holdups, pressure drop, and gas and liquid velocities were studied and compared with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…In our paper, hydrodynamic parameters such as holdups, pressure drop, and gas and liquid velocities were studied and compared with the experimental data. This method was also applied to model the dripping zone of a blast furnace including one liquid phase …”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic analysis of gas‐liquid‐liquid‐solid reactors using the XDEM numerical approach

et al. 2018

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Multiphase reactors are abundantly used in many industries. Among them, few reactors deal with four phases called gas-liquid-liquid-solid systems, which receive less attention due to their complex situation. Numerical study of such complex systems is not easy and requires large computational effort. In this study, a discrete-continuous numerical model known as the eXtended discrete element method (XDEM) is proposed to investigate the hydrodynamic behaviour of fluid phases passing through the packed bed of solid particles. This model is applied to the dripping zone of a blast furnace. In this zone, two distinct liquid phases, namely liquid iron and slag, flow through a pile of coke particles while exchanging momentum. In this work, besides the solid-fluid and gas-liquid interactions, the liquid-liquid interactions are also studied and the phases' mutual effects are discussed. In addition, a sensitivity study on the slag viscosity is performed, which shows the importance of liquid phase properties on the system behaviour. The results evaluation shows that the liquid iron accelerates the downward flow of the slag and the slag decelerates the downward flow of the liquid iron phase due to the resistance force caused by their relative velocity.

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“…Higher velocities are in respect to higher saturation zones.The non-uniform velocity profiles represent the effect of equally non-uniform porosity distribution estimated by the XDEM-suite which leads to more accurate and precise prediction of hydrodynamic parameters. More details about the multiphase solver of the XDEM suit can be found in[171,172,173].…”

mentioning

confidence: 99%

XDEM multi-physics and multi-scale simulation technology: Review of DEM–CFD coupling, methodology and engineering applications

Peters

Baniasadi

et al. 2019

Particuology

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The XDEM multi-physics and multi-scale simulation platform roots in the Extended Discrete Element Method (XDEM) and is being developed at the Institute of Computational Engineering at the University of Luxembourg. The platform is an advanced multi-physics simulation technology that combines flexibility and versatility to establish the next generation of multi-physics and multi-scale simulation tools. For this purpose the simulation framework relies on coupling various predictive tools based on both an Eulerian and Lagrangian approach. Eulerian approaches represent the wide field of continuum models while the Lagrange approach is perfectly suited to characterise discrete phases.Thus, continuum models include classical simulation tools such as Computational Fluid Dynamics (CFD) or Finite Element Analysis (FEA) while an extended configuration of the classical Discrete Element Method (DEM) addresses the discrete e.g. particulate phase. Apart from predicting the trajectories of individual particles, XDEM extends the application to estimating the thermodynamic state of each particle by advanced and optimised algorithms. The thermodynamic state may include temperature and species distributions due to chemical reaction and external heat sources. Hence, coupling these extended features with either CFD or FEA opens up a wide range of applications as di-verse as pharmaceutical industry e.g. drug production, agriculture food and processing industry, mining, construction and agricultural machinery, metals manufacturing, energy production and systems biology.

show abstract

Preliminary Investigation on the Capability of eXtended Discrete Element Method for Treating the Dripping Zone of a Blast Furnace

Cited by 12 publications

References 46 publications

The Extented Discrete Element Method (XDEM): An Advanced Approach to Model Blast Furnace

The Extented Discrete Element Method (XDEM): An Advanced Approach to Model Blast Furnace

Hydrodynamic analysis of gas‐liquid‐liquid‐solid reactors using the XDEM numerical approach

XDEM multi-physics and multi-scale simulation technology: Review of DEM–CFD coupling, methodology and engineering applications

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