基于CFD-DEM仿真耦合技术的转运站诱导风量预测研究

摘要

The dust is generated during the process of bulk materials transferring,which pollutes the transfer station seriously.The entrained air arising from the material flow is the root cause of the dust generation.To precisely predict the entrained air volume during bulk materials transferring is of instructional importance for good transfer station design and dust removal equipment selection.In this paper,the computational fluid dynamics and discrete element method (CFD-DEM) is used to establish the predicting model of the entrained air caused by the material flow and study the factors that affect the entrained air volume.Moreover,the simulation is verified through an application case.The results show that the CFD-DEM method can precisely predict the entrained air volume.%散料在转运过程中会产生大量粉尘,转运站中的粉尘污染严重,散料流引起的诱导风是产生粉尘的主要原因,能准确预测物料转运过程中产生的诱导风量,对转运站的设计及除尘设备选型具有重要指导意义 采用CFD-DEM计算机仿真耦合技术,建立诱导风预测模型,研究影响诱导风量的参数,并通过实际工程案例对此方法进行验证.结果显示,在给定工况下,采用CFD-DEM计算机仿真耦合技术可准确预测转运站诱导风量.