In order to improve the material distribution uniformity and reduce the dust concentration of the chute at loading station,a design parameter optimization method for the chute at the loading station is proposed based on CFD-DEM coupling.The work flow of installing station chute is analyzed,and the finite element model of installing station chute is established by CFD-DEM coupling method.The unloading equation,the impact equation of material with chute and baffle,the sliding equation and the motion equation are established,and meanwhile,the particle motion analysis and pressure flow field analysis are carried out based on the finite element model.According to the analysis results,the parameters of dynamic stacking angle,streamline control parameter,incidence Angle parameter,friction angle parameter between baffle and material corresponding to the materials installed in the station chute are optimized to realize the optimization of material flow,material speed,chute cross-sectional area and material gravity distribution.The experimental results show that the material distribution uniformity of the chute designed by the proposed method is high,and the dust mass concentration is reduced to 912 mg/m3.
关键词
CFD-DEM耦合/装车站溜槽/颗粒运动分析/压力流场分析/参数优化
Key words
CFD-DEM coupling/loading station chute/particle motion analysis/pressure flow field analysis/parameter optimization
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