Effect of staggered array structure on the flow field of micro gas chromatographic column

作     者：Daohan Ge Zhou Hu Liqiang Zhang Shining Zhu 葛道晗;胡州;张立强;祝世宁

作者机构：Institute of Intelligent Flexible MechatronicsJiangsu UniversityZhenjiang 212013China National Laboratory of Solid State MicrostructuresSchool of PhysicsNanjing UniversityNanjing 210093China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第1期

页      面：208-214页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20180098) National Laboratory of Solid State Microstructures,Nanjing University(Grant Nos.M32045 and M33042) 

主　　题：micro electromechanical system(MEMS) micro gas chromatography 

摘      要：A new design of staggered array semi-packed micro gas chromatographic column was presented based on the micro electromechanical system(MEMS)*** was a sensor for gas sample *** internal velocity fields of ten types of semi-packed micro gas chromatographic column were *** effects of array spacing and dislocation spacing on the flow field distribution were *** results show that on the basis of ensuring the formation of virtual wall,with the increase of array spacing,the maximum velocity difference between the flow channels in the vertical direction decreases gradually,but the velocity difference in the flow channels a and b *** the inlet velocity was set to be 0.18 m/s,the maximum velocity difference in the channel of the staggered semi-packed micro gas chromatography column 3(CSAC3)was 0.05610 m/*** maximum velocity difference in the channel a was 0.09160 m/*** maximum velocity difference in the channel b was 0.02401 m/***3 had a more uniform velocity field distribution,which can effectively suppress the laminar flow effect during chromatographic separation,and had a smaller pressure distribution,which puts forward lower requirements for carrier gas *** staggered array semi-packed micro gas chromatography column proposed in this paper can effectively improve the velocity field distribution and pressure distribution in the channel,and provide a theoretical basis for the design of the new micro gas chromatography column structure.