Electrokinesis in periodic laminar flow in microtubes

被引:0
|
作者
Bhattacharyya, A [1 ]
机构
[1] Univ Alberta, Dept Mech Engn, Edmonton, AB T6G 2G8, Canada
关键词
electroosmosis; streaming potential; periodic flow; microchannels; electrical double layer;
D O I
10.1117/12.388917
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Flow in microtubes is characterized by the formation of a electrical double layer(EDL) at the fluid-wall interface, and the creation of a electric field that has a retarding effect during pressure-driven fluid flow. rising the three-dimensional form of the Maxwell equations and the Navier-Stokes equations as a starting point, we discuss certain consequences of the theory when applied to the study of the effects of EDL during steady state laminar flow in microtubes. Further, the effects of EDL during periodic laminar flow - caused by a periodic external electric field or a periodic pressure gradient - are considered. Such a scenario is encountered in areas as diverse as microelectronics and the mechanics of blood circulation. Analytical solution of the problem is then given.
引用
收藏
页码:360 / 367
页数:8
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