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

作     者：Luwen ZHOU Yuqian ZHANG Xiaolong DENG Moubin LIU 

作者机构：Institute of MechanicsChinese Academy of SciencesBeijing 100190China Cancer Institute and HospitalChinese Academy of Medical SciencesBeiiing 100021China Beijing Computational Science Research CenterBeijing 100084China College of EngineeringPeking UaiversityBeijing 100871China 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2016年第37卷第11期

页      面：1431-1440页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

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

主　　题：array of micropillar permeability dissipative particle dynamics （DPD） 

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.