Numerical simulation of the multi-index orthogonal experiments on the spray dust-settling devices

High concentrated dust from coal mining is hazardous in that it seriously affects the health of the exposed miners and might also lead to explosion directly or indirectly. In order to effectively control the onsite dust density, we simulated the spray behavior of the dust-settling devices under vari...

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Bibliographic Details
Published in:Powder technology 2020-06, Vol.371, p.217-230
Main Authors: Xu, Changwei, Nie, Wen, Yang, Shibo, Peng, Huitian, Liu, Zhiqiang, Ma, Qingxin, Guo, Cheng, Liu, Qiang
Format: Article
Language:English
Subjects:
3D CFD simulation
Coal mines
Coal mining
Computer simulation
Design of experiments
Dust
Dust control
Experimental design
Factor analysis
Mathematical models
Miners
Multi-index orthogonal experiments
Optimization
Parameters
Settling
Spraying dust
Working conditions
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Summary:High concentrated dust from coal mining is hazardous in that it seriously affects the health of the exposed miners and might also lead to explosion directly or indirectly. In order to effectively control the onsite dust density, we simulated the spray behavior of the dust-settling devices under various operational parameter combinations based on CFD numerical simulations in combination of the orthogonal experimental design. After a comprehensive evaluation, we obtained an optimal parameter combination from the multi-factor analysis and applied it to the working site. The results demonstrated that the concentration of total dust and respirable dust at every measurement point dropped below 80.4% and 81.9% respectively. The working condition was greatly improved and the dust explosion hazards were effectively under control. This study provides a new approach for the structural and parametric optimization of spray dust-settling devices. It yields reliable results using the CFD simulations combined with multi-index orthogonal experiments. [Display omitted] •The method of CFD simulation and multi-index orthogonal experiments is adopted.•Comprehensive evaluation of three dust suppression factors•Studied multifactor effects on spray dust-settling devices performance•Field measurement showed that the devices achieved good dusting effect.•It has great significance for the design and applications of spray dust-settling devices.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2020.05.047