桥接(联网)
过滤(数学)
材料科学
错流过滤
膜
CFD-DEM公司
颗粒沉积
陶瓷膜
陶瓷
粒子(生态学)
入口
粒径
化学工程
离散元法
复合材料
机械
化学
机械工程
物理
工程类
计算机科学
地质学
海洋学
统计
生物化学
航程(航空)
数学
计算机网络
作者
Hao Wang,WU Jun-fei,Ping Fu,Zhiping Qu,Wenjie Zhao,Yixuan Song
出处
期刊:Processes
[MDPI AG]
日期:2022-02-26
卷期号:10 (3): 475-475
被引量:5
摘要
In the surface filtration process with pores larger than the particle size, the formation of particle bridges plays a crucial role in the filter cake structure and the filtration efficiency throughout the filtration process. First, to understand the microscopic information required for the bridging mechanism, we use the two-way coupling of computational fluid dynamics (CFD)–discrete element method (DEM) to simulate the deposition characteristics of particles in the pores of ceramic membranes. Next, by dynamically observing the deposition morphology and bridging process of particles, the bridging mechanism was revealed at the level of a single hole. Then, we studied the influence of particle concentration and inlet velocity on the bridge erection process. The results show that the bridging function of particles runs through the clean filtration stage and the transition stage. Particle concentration and inlet flow rate have a crucial influence on the formation of particle bridges and filtration efficiency.
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