1673-159X

CN 51-1686/N

基于CFD-DPM及PIV的工业射流除尘器分析及优化

Analysis and Optimization of Industrial Dust Removal Components Based on CFD-DPM And PIV

  • 摘要: 工业生产过程中,对工业射流除尘器进行分析及改造,可提高灰尘颗粒的清除效率,减少灰尘颗粒对整体生产效率的影响。文章通过计算流体力学离散颗粒模型(computational fluid dynamics-discrete phase model,CFD-DPM)和粒子图像测速(particle image velocimetry,PIV)技术,对工业射流除尘器流域内的气体流动开展研究,分析射流除尘器及其优化部件对除尘效果产生的影响:通过数值模拟和实验结合的方法,研究射流除尘器的压缩空气的运动特性与灰尘运动特性;优化原工业射流除尘器,确定最佳除尘方案,实现最佳除尘效果。结果表明:通过增加6片导流片,且每片高度为7 mm,达到了最佳的优化控制效果。这一改进平衡了射流除尘器出口气体流动湍动能,提高了出口气体流动速度,扩大了高速区面积,减少了灰尘颗粒进入射流除尘器,从而实现优化除尘的效果。

     

    Abstract: In industrial production, the inefficient removal of dust particles poses a significant barrier to operational productivity. Consequently, an in-depth analysis and upgrade of industrial dust removal components is critical. This research employs computational fluid dynamics with discrete particle modeling (CFD-DPM) alongside particle image velocimetry (PIV) to investigate the airflow dynamics throughout the flow domain of dust removal components, comparing the effects of both the original and optimized designs on dust particle behavior. By integrating numerical simulations with experimental validation, we explore the movement characteristics of compressed air and dust particles within the dust removal components. Our goal is to optimize the performance of existing dust removal components, thereby determining the most effective dust removal strategy. The results demonstrate that the optimized design markedly improves the external flow structure of the dust removal components. Through balancing the turbulent kinetic energy of the gas flow at the outlet, the optimized component enhances the flow velocity and expands the high-speed flow area, effectively minimizing dust particle entry into the component. These improvements collectively achieve a more efficient dust removal outcome, highlighting the potential for optimized design to support higher productivity in industrial settings.

     

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