Experimental study on dust suppression at transhipment point based on the theory of induced airflow dust production

Zhang, Xinghua; Wang, Haifeng; Chen, Xi; Fan, Chaonan; Tian, Kun; Zhang, Xiao

doi:10.1016/j.buildenv.2019.106200

Cited by 20 publications

(1 citation statement)

References 36 publications

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“…In addition, a dust curtain was set in the dust removal area of the maze to further consume the kinetic energy of the airflow and allow the dust carried by the dusty air to settle to suppress the dust. A dust suppression hopper was studied in [25]; its dust suppression mechanism concerns the process where fast-flowing bulk materials form a closed negative pressure space in the lower region of the dividing cone, and the dust moves to the centre under the action of pressure. Owing to the extrusion of the parting cone, the air inside the material column is expelled, which reduces the induced airflow and thus the secondary dust-raising rate.…”

Section: Introductionmentioning

confidence: 99%

Flow Field Characteristics of Fugitive Dust from Grab Unloading in an Open Space

Zhang,

Meng,

Zhang

et al. 2023

Processes

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Aiming at addressing the problem of dust generated when grab is unloaded, the flow field characteristics of fugitive dust in an open space were studied and reflected its unstable and complex nonlinear dynamic process. Using coal, sand, and flour as research objects, an experimental model and measurement system for grab unloading were built, and the dust diffusion range, diffusion speed and direction, settling time, dust concentration, and induced wind velocity at different measurement points were compared. The computational fluid dynamics–discrete element method (CFD-DEM) coupling method was adopted, the discrete phase model (DPM) of dust was established, the interaction of the particle, dust, and airflow fields during the unloading process of the grab was further studied, and the distribution and diffusion laws of the induced airflow and dust were obtained. The acquisition of flow field characteristics is of great significance for controlling and guiding the orderly deposition of dust.

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Section: Introductionmentioning

confidence: 99%