Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (11): 1431-1440.doi: https://doi.org/10.1007/s10483-016-2091-9

• 论文 • 上一篇    下一篇

Dissipative particle dynamics simulation of flow through periodic arrays of circular micropillar

Lüwen ZHOU1, Yuqian ZHANG2, Xiaolong DENG3, Moubin LIU4   

  1. 1. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Beijing 100021, China;
    3. Beijing Computational Science Research Center, Beijing 100084, China;
    4. College of Engineering, Peking University, Beijing 100871, China
  • 收稿日期:2016-01-25 修回日期:2016-03-18 出版日期:2016-11-01 发布日期:2016-11-01
  • 通讯作者: Moubin LIU E-mail:mbliu@pku.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Nos.31370953,10942004,and 91230203)

Dissipative particle dynamics simulation of flow through periodic arrays of circular micropillar

Lüwen ZHOU1, Yuqian ZHANG2, Xiaolong DENG3, Moubin LIU4   

  1. 1. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;
    2. Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Beijing 100021, China;
    3. Beijing Computational Science Research Center, Beijing 100084, China;
    4. College of Engineering, Peking University, Beijing 100871, China
  • Received:2016-01-25 Revised:2016-03-18 Online:2016-11-01 Published:2016-11-01
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos.31370953,10942004,and 91230203)

摘要:

Flow through arrays of micropillar embedded inside microfluidic chip systems is important for various microfluidic devices.It is critical to accurately predict the mass flow rate through pillar arrays based on the pillar design.This work presents a dissipative particle dynamics (DPD) model to simulate a problem of flow across periodic arrays of circular micropillar and investigates the permeability of two types of micropillar arrays.The flow fields including horizontal and vertical velocity fields,the number density field,and the streamline of the flow are analyzed.The predicted solid volumes by the presented DPD simulation of both types of arrays are quite close to the actual counterparts.These quantitative agreements show usefulness and effectiveness of the DPD model in simulating arrays of micropillar.By comparing two types of micropillar arrangement patterns,we find that the arrangement pattern of micropillar does not have significant influence on the permeability of the array.

关键词: array of micropillar, dissipative particle dynamics(DPD), permeability

Abstract:

Flow through arrays of micropillar embedded inside microfluidic chip systems is important for various microfluidic devices.It is critical to accurately predict the mass flow rate through pillar arrays based on the pillar design.This work presents a dissipative particle dynamics (DPD) model to simulate a problem of flow across periodic arrays of circular micropillar and investigates the permeability of two types of micropillar arrays.The flow fields including horizontal and vertical velocity fields,the number density field,and the streamline of the flow are analyzed.The predicted solid volumes by the presented DPD simulation of both types of arrays are quite close to the actual counterparts.These quantitative agreements show usefulness and effectiveness of the DPD model in simulating arrays of micropillar.By comparing two types of micropillar arrangement patterns,we find that the arrangement pattern of micropillar does not have significant influence on the permeability of the array.

Key words: dissipative particle dynamics(DPD), array of micropillar, permeability

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