CFD modeling of ventilation ducts for improvement of air quality in closed mines

Park, Jongmyung; Park, Samgyu; Lee, Dong-Kil

doi:10.1080/12269328.2016.1164090

Cited by 17 publications

(8 citation statements)

References 11 publications

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“…In their study, Park et al [29] investigate the distribution of air velocities, fluid ages, air flow streamlines, and temperatures. For this, ANSYS CFX 16.0 and ICEM-CFD are used as the solver and generator of hexahedral numerical grids, respectively.…”

Section: Ventilation At the Working Faces Of Minesmentioning

confidence: 99%

Applications of Computational Fluid Dynamics for Mine Ventilation in Mineral Development

et al. 2022

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In this paper, the application status of computational fluid dynamics (CFD) modeling in mine ventilation is presented by reviewing papers published since the year 2000. The aspects covered in these papers are the numerical analyses of working faces, mine tunnels, ventilation systems, and open-pit mines. CFD modeling procedures for mine ventilation are summarized. Further, building geometries, grid generation, solutions of equations, model validation, grid-independence studies, and solution convergence are discussed. Several examples of CFD modeling for mine ventilation are provided. Finally, conclusions including recommendations for future studies that may allow for more advantageous applications of such numerical simulations are provided.

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Section: Ventilation At the Working Faces Of Minesmentioning

confidence: 99%

Applications of Computational Fluid Dynamics for Mine Ventilation in Mineral Development

et al. 2022

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“…The use of CFD simulations can effectively overcome the problems of time-consuming and costly experiments, and is an effective method for the design of ventilation systems [ 20 , 21 ]. Many scholars at home and abroad have studied the design of mine ventilation systems via CFD simulations, which have been widely used in the study of mine gas extraction and migration laws [ 22 , 23 ], goaf oxidation zone distribution laws [ 24 , 25 ], ventilation pipe layout [ 26 , 27 , 28 ], and dust migration laws [ 29 , 30 ]. CFD analysis plays an important role in the study of gas diffusion, and can provide a reference for preliminary research carried out prior to laboratory experiments and field verification.…”

Section: Introductionmentioning

confidence: 99%

Study on the Optimization and Oxygen-Enrichment Effect of Ventilation Scheme in a Blind Heading of Plateau Mine

2022

IJERPH

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There are abundant mineral resources in plateau areas, but it is difficult to extract them safely because the problem of hypoxia in plateau mines seriously affects the life and health of workers. In order to address the problem of hypoxia in the blind heading of a plateau metal mine, a three-dimensional roadway model was established based on field data of the Pulang copper mine in Yunnan province, China. The computational fluid dynamics (CFD) method was used to explore the optimal type of oxygen supply duct outlet, and to reveal the oxygen diffusion law influencing different ventilation factors. Grey correlation analysis was used to study the correlation values of the ventilation factors on the oxygen-enrichment effect in blind headings, such as forcing duct position, exhausting duct position, and extraction pressure ratio. The results demonstrated that the oxygen-enrichment effect of a slit oxygen outlet was better than that of the traditional oxygen supply method. When the direction of the oxygen outlet hole was 30° and the height above the roadway floor was 1.95 m, the oxygen increase effect was better than other forms of oxygen supply duct outlets. Grey correlation analysis revealed that the major influencing factors of the oxygen-enrichment effect in the roadway of the plateau mine, were, in descending order, as follows: forcing duct position, extraction pressure ratio, and exhausting duct position. This study has a positive guiding significance for improving the respiration environment in blind headings of plateau mines.

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“…Traditionally, in mine ventilation, researchers mainly focus on ventilation system optimization [8][9][10][11], dust and harmful gas flow and diffusion pattern [12][13][14], and thermal environment [15][16][17] in underground mining. Usually, in situ measurement, laboratory experiment, and numerical simulation methods were used in their research [15].…”

Section: Introductionmentioning

confidence: 99%

Increasing Oxygen Mass Fraction in Blind Headings of a Plateau Metal Mine by Oxygen Supply Duct Design: A CFD Modelling Approach

Zhao

Huang

et al. 2020

Mathematical Problems in Engineering

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Hypoxia problem has always been a difficult point in plateau tunneling projects. To solve this problem, a blind heading face in a plateau metal mine in western China was taken as the physical model, and the computational fluid dynamics was used to analyze the oxygen mass fraction distribution and oxygen-increasing effect in 1 m, 3 m, and 5 m roadway sections from the heading face. The optimal ventilation system was first built to obtain the optimum height and length of the airflow ducts. Then different cases with various oxygen supply duct designs were built in 2 scenarios. The results found that different oxygen supply duct design has significant influence on the oxygen distribution in the heading face. Also, each design has different optimal height of oxygen outlet. The oxygen supply effect is best when some small holes are made in the oxygen supply duct to diffuse oxygen to the working surface. The finding of this paper is helpful for effective and economical oxygen supply in roadway excavation of plateau metal mine and tunnel.

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CFD modeling of ventilation ducts for improvement of air quality in closed mines

Cited by 17 publications

References 11 publications

Applications of Computational Fluid Dynamics for Mine Ventilation in Mineral Development

Applications of Computational Fluid Dynamics for Mine Ventilation in Mineral Development

Study on the Optimization and Oxygen-Enrichment Effect of Ventilation Scheme in a Blind Heading of Plateau Mine

Increasing Oxygen Mass Fraction in Blind Headings of a Plateau Metal Mine by Oxygen Supply Duct Design: A CFD Modelling Approach

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