Dust Dispersion Characteristics of Open Stockpiles and the Scale of Dust Suppression Shed

Ma, Wenzhong; Du, Weiqiang; Guo, Jiaxin; Wu, Shoujun; Li, Liqing; Zhang, Zheng

doi:10.3390/app122211568

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…The results showed that the porous fence and barrier had a positive effect on reducing the local rate and reducing the dust erosion rate, that the actual accumulation geometry with adjacent structures would affect the wind velocity distribution, that the inlet angle was a key factor affecting the effectiveness of solid and porous wind barriers, and that the placement of porous barriers between the stockpiles could effectively reduce dust emissions. Ma et al [13,14] used theoretical methods and numerical simulations to investigate the extent of dust pollution in open dumps and to determine the size of dust barriers. Using DPM-CFD simulations and field measurements, the dispersion characteristics of dust in open yards were determined.…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation Based Ventilation and Dust Reduction Strategy for Large Scale Enclosed Spaces in Open Pit Coal Mines—A Case of Coal Shed

Wang

Zhou

et al. 2023

Sustainability

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The coal shed is an enclosed space where raw coal is stored and handled. The intensive operation of the machinery inside the coal shed generates a large amount of dust, and the wind speed inside the enclosed space easily leads to a high concentration of dust, which endangers the physical and mental health of the workers. In this paper, we first studied the particle size distribution of dust samples in the coal shed and found that 12.2% of the dust in the air of the coal shed was 10–100 μm, 87.8% was less than 10 μm, and 72.9% was less than 2.5 μm. Fluent was used to simulate the law of dust dispersion in the coal shed under different working conditions, and finally, the simulation results were used to guide the design of the ventilation site and dust-reduction scenario. The experimental and simulation results show that under the same working conditions, the average dust reduction efficiency of the ventilation method in which the north side and south side pump air outside was 9.9%. The ventilation method in which the north side blows inside and the south side pumps outside was 23.7%. The average dust reduction efficiency of the ventilation method in which the north side blows inside and the south side pumps outside + placing the fan in the middle was 59.9%. The research results can provide some reference value for indoor air quality improvement.

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Section: Introductionmentioning

confidence: 99%

CFD Simulation Based Ventilation and Dust Reduction Strategy for Large Scale Enclosed Spaces in Open Pit Coal Mines—A Case of Coal Shed

Wang

Zhou

et al. 2023

Sustainability

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“…Weiwu Ma et al [13] developed a field-validated model that analyzes the dust dispersion effects of open stockpiles using CFD. Additionally, the closed warehouse structure was comprehensively analyzed and validated for warehouse construction using CFD.…”

Section: Introduction Of Latest Technologies and Researchmentioning

confidence: 99%

Optical Particle Visualization Technique Using Red–Green–Blue and Core Storage Shed Flow Field Analysis

Cho,

2023

Applied Sciences

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This study uses a flow visualization method to analyze the flow field of a shed-type coal storage shed, comparing and verifying the findings through numerical calculation. Initially, a coal warehouse-scale model is created for flow visualization. Laser-based cross-sectional analysis yields essential flow data, from which red–green–blue values are extracted, and the flow object with the highest G value is selected. Subsequently, as the video frame changes, the moving object is tracked, and the direction is derived. The velocity vector of the moving object within the designated area is derived. Finally, we compare the results of the flow visualization experiment with the simulation outcome. Notably, the error rate in regions characterized by high flow velocity is found to be low, and a high implementation rate is observed in areas with many floating objects to track. Conversely, implementation accuracy is lower in low-velocity fields. Both methods result in a recirculation zone at the top of the inlet, and a flow stagnation region occurs on the upper part of the central wall.

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Dust Dispersion Characteristics of Open Stockpiles and the Scale of Dust Suppression Shed

Cited by 2 publications

References 27 publications

CFD Simulation Based Ventilation and Dust Reduction Strategy for Large Scale Enclosed Spaces in Open Pit Coal Mines—A Case of Coal Shed

CFD Simulation Based Ventilation and Dust Reduction Strategy for Large Scale Enclosed Spaces in Open Pit Coal Mines—A Case of Coal Shed

Optical Particle Visualization Technique Using Red–Green–Blue and Core Storage Shed Flow Field Analysis

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