Comparison of underground mine DPM simulation using discrete phase and continuous phase models

被引:40
作者
Chang, Ping [1 ]
Xu, Guang [1 ,2 ]
Zhou, Fubao [2 ,3 ]
Mullins, Benjamin [4 ,5 ]
Abishek, S. [4 ,5 ]
机构
[1] Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn, Kalgoorlie, WA 6430, Australia
[2] China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Xuzhou 221116, Jiangsu, Peoples R China
[3] China Univ Min & Technol, Key Lab Gas & Fire Control Coal Mines, Xuzhou 221008, Jiangsu, Peoples R China
[4] Curtin Univ, Sch Publ Hlth, Occupat Environm & Safety, Perth, WA 6102, Australia
[5] Curtin Inst Computat, Fluid Dynam Res Grp, Perth, WA 6102, Australia
关键词
Diesel particulate matter; Computational fluid dynamics; Underground mines; Eulerian-Lagrangian method; Eulerian-Eulerian method; Species transport method; SOLID 2-PHASE FLOW; NUMERICAL-SIMULATION; AUXILIARY VENTILATION; DUST SUPPRESSION; CFD SIMULATIONS; RESPIRABLE DUST; DIESEL EXHAUST; LUNG-CANCER; TRACER GAS; SYSTEM;
D O I
10.1016/j.psep.2019.04.027
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Diesel particulate matter (DPM) is carcinogenic to humans. DPM concentrations in underground mines are much higher than other working environments, thus pose substantial health threats to miners due to overexposure. Computational fluid dynamics is commonly used to study the DPM dispersion and assess the concentration distribution in various working environments. However, most such studies for underground mines treated DPM as a continuous phase (gas phase) in the model. DPM is a solid discrete phase, and its behaviours could be quite different from that of gaseous contaminants. This study compared DPM concentration distributions by using three modelling methods: the Eulerian-Lagrangian method and the Eulerian-Eulerian method that treats DPM as discrete phase particles, and the species transport method that treats DPM as a continuous phase gas. The model was based on a typical underground mine development face with a forcing auxiliary ventilation setup. It was found that the general DPM concentration distribution for the three numerical methods was similar for simple geometry with more uniform flow regions. However, large discrepancies existed in the development heading with complex geometry and flow features. The findings suggest that when simulating DPM, although the species transport method can provide relatively accurate results with much less computational time, the parameters of the modelled gas need to be carefully calibrated to get a better simulation result. For key areas where the diesel machinery and miners are usually located, the Eulerian-Lagrangian method should be used for more accurate analysis. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:45 / 55
页数:11
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