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基于CFD-PBM耦合方法的栅条絮凝池内颗粒聚并行为模拟

柴彤山 伏雨 程怀玉 龙新平

柴彤山, 伏雨, 程怀玉, 龙新平. 基于CFD-PBM耦合方法的栅条絮凝池内颗粒聚并行为模拟[J]. 环境工程, 2023, 41(4): 40-48. doi: 10.13205/j.hjgc.202304006
引用本文: 柴彤山, 伏雨, 程怀玉, 龙新平. 基于CFD-PBM耦合方法的栅条絮凝池内颗粒聚并行为模拟[J]. 环境工程, 2023, 41(4): 40-48. doi: 10.13205/j.hjgc.202304006
CHAI Tongshan, FU Yu, CHENG Huaiyu, LONG Xinping. NUMERICAL SIMULATION OF PARTICLE AGGREGATION IN GRID FLOCCULATION TANK BASED ON CFD-PBM[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 40-48. doi: 10.13205/j.hjgc.202304006
Citation: CHAI Tongshan, FU Yu, CHENG Huaiyu, LONG Xinping. NUMERICAL SIMULATION OF PARTICLE AGGREGATION IN GRID FLOCCULATION TANK BASED ON CFD-PBM[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(4): 40-48. doi: 10.13205/j.hjgc.202304006

基于CFD-PBM耦合方法的栅条絮凝池内颗粒聚并行为模拟

doi: 10.13205/j.hjgc.202304006
基金项目: 

国家自然科学基金(12072243)

详细信息
    作者简介:

    柴彤山(1998-),男,硕士研究生,主要从事流动模拟研究。chai_tongshan@whu.edu.cn

    通讯作者:

    龙新平(1967-),教授,博士生导师,主要从事流动模拟和流体喷射技术研究。xplong@whu.edu.cn

NUMERICAL SIMULATION OF PARTICLE AGGREGATION IN GRID FLOCCULATION TANK BASED ON CFD-PBM

  • 摘要: 为探究絮凝池内部颗粒聚并行为的影响因素,采用群体平衡模型(PBM)模拟颗粒聚并行为,通过CFD-PBM耦合方法,研究了絮凝颗粒初始平均粒径和絮凝颗粒体积分数对栅条絮凝池内部颗粒聚并行为的影响,提出了颗粒平均粒径增长率指标来表征CFD-PBM耦合方法下絮凝池内部絮凝效果。结果表明:1)当进口颗粒体积分数为0.1时,随着絮凝颗粒初始平均粒径由10 μm增长到76 μm,出口处粒径由117.54 μm增长到154.82 μm,但颗粒平均粒径增长率由1075.4%迅速降低至103.7%;2)在进口颗粒初始粒径为40 μm时,随着颗粒体积分数由0.05增长至0.2,出口位置颗粒粒径由127.16 μm增加至155.74 μm,而平均粒径增长率也随之由208.7%增加至289.4%;3)从整体上来看,当颗粒体积分数从0.05增加到0.1时,平均粒径增长率的变化最快,絮凝效果的提升最为显著。研究结果对于栅条絮凝池的结构设计指导和絮凝效果评价具有重要意义。
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出版历程
  • 收稿日期:  2022-03-24
  • 网络出版日期:  2023-05-26
  • 刊出日期:  2023-04-01

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