[an error occurred while processing this directive]
   
 
���¿��ټ��� �߼�����
   ��ҳ  �ڿ�����  ��ί��  Ͷ��ָ��  �ڿ�����  ��������  �� �� ��  ��ϵ����
�������պ����ѧѧ�� 2005, Vol. 31 Issue (05) :583-586    DOI:
���� ����Ŀ¼ | ����Ŀ¼ | ������� | �߼����� << | >>
��ά΢�۵�����������ǿ���
����, �ž���*
�������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100083
Enhanced mixing in 2D micro-channel electro-osmotic flows
Fang Li, Zhang Jinbai*
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

ժҪ
�����
�������
Download: PDF (0KB)   HTML 1KB   Export: BibTeX or EndNote (RIS)      Supporting Info
ժҪ ΢�߶������еĻ��һֱ��΢��ϵͳ�����е�һ��������,�Ա���zeta�ƷǾ��ȷֲ�����µĶ�ά΢�۵���������������ֵ����,�ص��������������µ�΢���������ǿ.���ڵ�������Helmholtz-Smoluchowski�����ٶ�ģ��,Ӧ��SIMPLE����������4�ֻ����ٶ������������ϵķֲ�������һ��ʱ��΢�۵������������������������������еĻ��.����������,�����ٶȵķǾ���һ�µ���΢�۵��������е����߷������ҵ�ת��,�Ӷ�ʹ��΢�۵������Ļ��Ч���кܴ�����.���������ߵ�ת��Խ���ҡ�ת�۵Ĵ���Խ��,΢�۵��������Ч�ʵ���߾�Խ��.
Service
�ѱ����Ƽ�������
�����ҵ����
�������ù�����
Email Alert
RSS
�����������
�ؼ����� ���   ����͸   �۵���   ΢��������   ��������ѧ     
Abstract�� Micro electro-mechanical system (MEMS) elements are extremely small,soslow mixing due to low Reynolds number is the one of most significant performance limitations for micro-fluidic systems.The present work is a numerical study of the electro-osmotic flows (EOF) in micro-channel with non-uniform wall zeta potential. In particular, the mixing enhancements of micro-channel flow were investigated, which are due to induced transverse flows resulting from the variations in the wall zeta potential. Based on the Helmholtz-Smoluchowski wall slip velocity model for EOF, four cases of electro-osmotic flows in micro-channel with non-uniform wall slip velocitys and the mixing of the passive scale in these flows were computed with the semi-implicit method for pressure-linked equations (SIMPLE) algorithm. The results show that the non-uniform wall slip velocitys induce zigzag streamlines, and as a result, the mixing are enhanced. In generally, the mixing efficiency increases with the strength of the transverse flows.
Keywords�� mixing   electroosmosis   channel flow   micro electro-mechanical devices   electro-hydrodynamics     
Received 2004-11-04;
About author: �� ��(1969-),��,�����Ž���,��ʿ��, fl@bjyouth.net.
���ñ���:   
����, �ž���.��ά΢�۵�����������ǿ���[J]  �������պ����ѧѧ��, 2005,V31(05): 583-586
Fang Li, Zhang Jinbai.Enhanced mixing in 2D micro-channel electro-osmotic flows[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(05): 583-586
���ӱ���:  
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2005/V31/I05/583
Copyright 2010 by �������պ����ѧѧ��