EDEM-FLUENT coupled simulation of coal-gas outburst two-phase flow

Du, Feng; Guo, Yangyang; Wang, Liang; Xu, Chao; Zhou, Aitao; Wang, Gongda

doi:10.1177/01445987211023853

Cited by 9 publications

(5 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2.1 Solid-liquid two-phase coupling Considering the interaction between particles, the solid-liquid two-phase coupling was studied using the Euler-Lagrange method, and the calculation involved two parts. The flow field was calculated by using the Fluent, and the particle information was calculated by using the EDEM (Du et al, 2021).…”

Section: Mathematical Modelmentioning

confidence: 99%

Numerical investigation of particle effect on wear characteristic of centrifugal slurry pump based on CFD-DEM coupling

Shi,

Ding,

et al. 2023

View full text Add to dashboard Cite

PurposeIn the process of conveying the solid–liquid two-phase medium of the centrifugal slurry pump, the wear of the flow-passing parts is an important problem affecting its life and safe operation. Therefore, a numerical investigation on the wear characteristics of the centrifugal slurry pump under different particle conditions was conducted.Design/methodology/approachA solid-liquid two-phase model based on CFD-DEM coupling is established and used to analyze the flow field and the wear characteristics of the flow-passing parts with different particle densities, volume fractions and sizes.FindingsParticle conditions will affect the pump flow field. To analyze the pump wear characteristics, the wear distribution, wear value and cumulative force laws of flow-passing parts under different particle conditions are obtained. In each flow-passing part, with the increase of particle density, volume fraction and size, the wear area is concentrated and the wear depth increases. Under different particle conditions, the wear is mainly on the volute chamber and the blade pressure surface, and the tangential cumulative force of flow-passing parts is much larger than the normal cumulative force.Originality/valueAn accurate model and a coupled simulation method for predicting the wear of the slurry pump are obtained, and the wear characteristic law can provide a reference for the design of the slurry pump to reduce friction.

show abstract

Section: Mathematical Modelmentioning

confidence: 99%

Numerical investigation of particle effect on wear characteristic of centrifugal slurry pump based on CFD-DEM coupling

Shi,

Ding,

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Thus, further efforts are required to use this method in field-scale studies and validate the coupling method using available experimental and field data. Du et al (2021) used the DEM-CFD coupling method to simulate the post-initiation stage of the outburst. The authors used EDEM and FLUENT software and coupled them explicitly.…”

Section: Coal and Gas Outburst From Particles Point Of Viewmentioning

confidence: 99%

Numerical modelling of gas outburst from coal: a review from control parameters to the initiation process

Soleimani,

Si,

Roshan

et al. 2023

Int J Coal Sci Technol

View full text Add to dashboard Cite

Among all methods for investigating the complex phenomenon of the coal and gas outburst, numerical modelling is the most comprehensive one that can consider all involved parameters and simulate the complex multi-physical phenomenon. The main aim of this paper is to review recent numerical modelling studies concerning this disastrous phenomenon observed in coal mining. The paper aims to analyse these studies comprehensively and identify any existing research gaps that could be addressed in future research endeavours. To this end, the concepts and equations that have been used in previous studies to simulate the solid and fluid behaviour during outburst initiation and how these equations are coupled to consider multiphysical interactions were reviewed. Both strengths and deficiencies in past outburst modelling work were highlighted. Finally, potential research topics for future studies were discussed in three categories; looking into the outburst phenomenon in the scale of the particles which is mostly focused on the discrete element method, conservation of the energy as a method to quantitively assess outburst initiation, and the application of statistics in both applying the heterogeneity in the models and assessing the possibility of the outburst occurrence.

show abstract

“…Coal spontaneous combustion and gas coupling disasters have the characteristics of complexity, concealment, dynamics and coupling, etc. − The prevention and control of the coupling disasters are characterized by high risk, difficulty to identify, and difficulty to warn and manage. − Therefore, rapid and accurate prediction of the coupling hazardous area is the key to coupling disasters management and prevention. Hazardous area of coupling disasters is a region coupled by multifield space–time evolution such as the fracture field, oxygen concentration field, residual coal distribution field, and gas seepage field. − Due to the unique multifield coupling mechanism, various factors interact with each other, which make the dynamic description of the hazardous area of coupling disasters more complicated and difficult.…”

Section: Introductionmentioning

confidence: 99%

“…Coal spontaneous combustion and gas coupling disasters have the characteristics of complexity, concealment, dynamics and coupling, etc. 31 − 33 The prevention and control of the coupling disasters are characterized by high risk, difficulty to identify, and difficulty to warn and manage. 34 − 36 Therefore, rapid and accurate prediction of the coupling hazardous area is the key to coupling disasters management and prevention.…”

Section: Introductionmentioning

confidence: 99%

Hazardous Area Reconstruction and Law Analysis of Coal Spontaneous Combustion and Gas Coupling Disasters in Goaf Based on DEM-CFD

et al. 2023

View full text Add to dashboard Cite

Coal spontaneous combustion and gas coupling disasters are the highest percentage of serious accidents in coal mines, causing the most serious disasters. China is one of the countries with the most serious coal spontaneous combustion and gas coupling disasters in goaf, and it is of great significance to explore the evolution law of coal spontaneous combustion and gas coupling disasters in goaf for disaster prevention and control. To study the three-dimensional spatial characteristics of the hazardous area of the coupling coal spontaneous combustion and gas disaster in goaf, a discrete element method-computational fluid dynamics (DEM-CFD)-based hazardous area reconstruction method was proposed. Taking a fully mechanized caving face of a coal mine in Shandong, China, as an example, first, the working face mining model was established by PFC3D, and the porosity of different horizontal and vertical positions of goaf after mining was extracted. Second, the porosity extracted was imported into computational fluid simulation software FLUENT by UDF. Finally, the distribution laws of oxygen and gas concentration during the real goaf mining process were simulated and analyzed. The results showed that the oxygen concentration in the intake roadway at a depth of 50.7 m in goaf decreased to 12%, and the gas concentration at a depth of 42.0 m in goaf increased to 16%. The oxygen concentration in the return airway roadway was reduced to 12% at 17.3 m depth in goaf, and the gas concentration increased to 16% at 6 m in the direction of goaf. The gas concentration was higher at the return air corner. The three-dimensional shapes of the hazardous area in goaf were constructed to satisfy the coupling of O2 concentration field, CH4 explosion limit concentration field, and fracture field and so were the laws of hazardous area analyzed qualitatively and quantitatively. It has important research significance for the rapid identification and determination of the coal spontaneous combustion and gas coupling disasters hazardous area.

show abstract

EDEM-FLUENT coupled simulation of coal-gas outburst two-phase flow

Cited by 9 publications

References 35 publications

Numerical investigation of particle effect on wear characteristic of centrifugal slurry pump based on CFD-DEM coupling

Numerical investigation of particle effect on wear characteristic of centrifugal slurry pump based on CFD-DEM coupling

Numerical modelling of gas outburst from coal: a review from control parameters to the initiation process

Hazardous Area Reconstruction and Law Analysis of Coal Spontaneous Combustion and Gas Coupling Disasters in Goaf Based on DEM-CFD

Contact Info

Product

Resources

About