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耦合颗粒受力解析的CFD模型及其在超滤膜污染机制中的应用

王芮,  尤宏,  尚文涛,  孙飞云,  岳三峰,  孙金旭

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文章导航 > 环境工程  > 2021 >  39(7): 116-121,150
王芮, 尤宏, 尚文涛, 孙飞云, 岳三峰, 孙金旭. 耦合颗粒受力解析的CFD模型及其在超滤膜污染机制中的应用[J]. 环境工程, 2021, 39(7): 116-121,150. doi: 10.13205/j.hjgc.202107014
引用本文: 王芮, 尤宏, 尚文涛, 孙飞云, 岳三峰, 孙金旭. 耦合颗粒受力解析的CFD模型及其在超滤膜污染机制中的应用[J]. 环境工程, 2021, 39(7): 116-121,150. doi: 10.13205/j.hjgc.202107014
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WANG Rui, YOU Hong, SHANG Wen-tao, SUN Fei-yun, YUE San-feng, SUN Jin-xu. CFD MODEL COUPLED WITH PARTICLES FORCE ANALYSIS AND ITS APPLICATION IN ULTRAFILTRATION MEMBRANE FOULING[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(7): 116-121,150. doi: 10.13205/j.hjgc.202107014
Citation: WANG Rui, YOU Hong, SHANG Wen-tao, SUN Fei-yun, YUE San-feng, SUN Jin-xu. CFD MODEL COUPLED WITH PARTICLES FORCE ANALYSIS AND ITS APPLICATION IN ULTRAFILTRATION MEMBRANE FOULING[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(7): 116-121,150. doi: 10.13205/j.hjgc.202107014
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耦合颗粒受力解析的CFD模型及其在超滤膜污染机制中的应用

doi: 10.13205/j.hjgc.202107014

  • 1. 哈尔滨工业大学(深圳) 土木与环境工程学院, 广东 深圳 518055;

  • 2. 哈尔滨工业大学 环境学院, 哈尔滨 150000

基金项目: 

深圳市基础研究（学科布局）项目（JCYJ20160406162038258）；国家自然科学基金项目（52070053）

详细信息
    作者简介:

    王芮(1994-),女,博士研究生,主要研究方向为膜改性及膜污染机理。wr948@qq.com

    通讯作者:

    孙飞云(1982-),男,博士,副教授,主要研究方向为膜分离技术及其过程开发、污水处理和资源化、饮用水深度处理、城市雨水利用技术等。sun_fy@hit.edu.cn

CFD MODEL COUPLED WITH PARTICLES FORCE ANALYSIS AND ITS APPLICATION IN ULTRAFILTRATION MEMBRANE FOULING

  • 1. School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China;

  • 2. School of Environment, Harbin Institute of Technology, Harbin 150000, China

    摘要
  • 摘要: 膜污染可以视为颗粒在膜表面的沉降过程。为深入了解在过滤通道内发生的颗粒迁移和沉降过程，建立了一种耦合颗粒受力的计算流体力学（CFD）模型。通过分析颗粒在超滤过程中的受力，将颗粒受力分析的用户自定义函数（UDF）与CFD中的离散相模型（DPM）耦合，对颗粒的迁移轨迹及沉降进行模拟，并利用过滤实验和微粒子图像测速技术（Micro-PIV）对CFD模拟结果进行了验证。结果表明：颗粒沉降概率与跨膜压差呈正相关，与错流速度呈负相关，超滤实验证明了CFD模拟颗粒沉降的准确性。Micro-PIV示踪粒子的运动轨迹记录膜腔内的速度场分布也验证了CFD模拟流场的准确性。CFD模型可视化地并直观地揭示了膜过程流场和颗粒运动情况，为理解膜污染机制提供了科学依据，对优化膜模块具有重要的指导作用。
    Abstract: Membrane fouling can be defined as a particle deposition process on the surface of membrane. In order to understand the particle migration and deposition process in the filter channel, a computational fluid dynamics(CFD) model coupled with particle force analysis was studied. By editing the user-defined function(UDF) of the force of the particles and combining with the discrete phase model(DPM) in CFD, the particle behaviors were simulated during ultrafiltration. The CFD simulation results were further verified by batch-scale experiments and the accuracy of CFD simulation of particle deposition was evidenced by in-situ Micro-PIV visualization.Resultsshowed that the particle deposition probability was positively related to the transmembrane pressure difference, and inversely related to the cross-flow velocity. The velocity field in the membrane cavity was recorded by the trajectory of the tracer particles. This CFD model visually and intuitively revealed the flow field of the membrane process and the movement of particles, and provided a scientific basis for understanding membrane fouling and optimizing membrane modules.
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出版历程
  • 收稿日期:  2021-01-25
  • 网络出版日期:  2022-01-18

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