Electromagnetohydrodynamic flows and mass transport in curved rectangular microchannels

作     者：Yongbo LIU Yongjun JIAN Yongbo LIU;Yongjun JIAN

作者机构：School of Mathematical ScienceInner Mongolia UniversityHohhot 010021China 

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

年 卷 期：2020年第41卷第9期

页      面：1431-1446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(No.11772162) the Natural Science Foundation of Inner Mongolia Autonomous Region of China(No.2016MS0106) 

主　　题：electromagnetohydrodynamic(EMHD)flow curved rectangular microchannel mass transfer characteristic effective diffusivity 

摘      要：Curved microchannels are often encountered in lab-on-chip systems because the effective axial channel lengths of such channels are often larger than those of straight microchannels for a given per unit chip *** this paper,the effective diffusivity of a neutral solute in an oscillating electromagnetohydrodynamic(EMHD)flow through a curved rectangular microchannel is investigated *** flow is assumed as a creeping flow due to the extremely low Reynolds number in such microflow *** the theoretical analysis,we find that the effective diffusivity primarily depends on five dimensionless parameters,i.e.,the curvature ratio of the curved channel,the Schmidt number,the tidal displacement,the angular Reynolds number,and the dimensionless electric field strength *** on the obtained results,we can precisely control the mass transfer characteristics of the EMHD flow in a curved rectangular microchannel by appropriately altering the corresponding parameter values.