Fluid flow driven along microchannel by its upper stretching wall with electrokinetic effects  

作　　者：Hang XU I.POP Q.SUN 

机构地区：[1]Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,State Key Lab of Ocean Engineering,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University [2]Department of Mathematics,Babe§-Bolyai University [3]Particulate Fluids Processing Centre,Department of Chemical Engineering,The University of Melbourne

出　　处：《Applied Mathematics and Mechanics(English Edition)》2018年第3期395-408,共14页应用数学和力学（英文版）

基　　金：supported in part by the Australian Research Council through a Discovery Early Career Researcher Award to Qiang SUN

摘　　要：We develop a mathematical model to describe the flow in a microchannel driven by the upper stretching wall of the channel in the presence of electrokinetic effects. In this model, we avoid imposing any unphysical boundary condition, for instance, the zero electrostatic potential in the middle of the channel. Using the similarity transformation, we employ the homotopy analysis method （HAM） to get the analytical solution of the model. In our approach, the unknown pressure constant and the integral constant related to the electric potential are solved spontaneously by using the proper boundary conditions on the channel walls, which makes our model consistent with the commonly accepted models in the field of fluid mechanics. It is expected that our model can offer a general and proper way to study the flow phenomena in microchannels.We develop a mathematical model to describe the flow in a microchannel driven by the upper stretching wall of the channel in the presence of electrokinetic effects. In this model, we avoid imposing any unphysical boundary condition, for instance, the zero electrostatic potential in the middle of the channel. Using the similarity transformation, we employ the homotopy analysis method （HAM） to get the analytical solution of the model. In our approach, the unknown pressure constant and the integral constant related to the electric potential are solved spontaneously by using the proper boundary conditions on the channel walls, which makes our model consistent with the commonly accepted models in the field of fluid mechanics. It is expected that our model can offer a general and proper way to study the flow phenomena in microchannels.

关 键 词：MICROCHANNEL electrokinetic effect stretching wall electro-viscous flowmodel 

分 类 号：O361[理学—流体力学]