行波电渗流微泵的数值模拟和微泵流量影响参数研究

中国机械工程 ›› 2012, Vol. 23 ›› Issue (5): 590-594.

行波电渗流微泵的数值模拟和微泵流量影响参数研究

陈波;晁侃;吴健康

华中科技大学,武汉,430074

出版日期:2012-03-10 发布日期:2012-03-21
基金资助:
国家自然科学基金资助项目(10872076，50805059)
National Natural Science Foundation of China（No. 10872076，50805059）

Numerical Simulation of Traveling-wave Electroomotic Micropump and Effects of Parameters on Flow

Chen Bo;Chao Kan;Wu Jiankang

Huazhong University of Science & Technology, Wuhan, 430074

Online:2012-03-10 Published:2012-03-21
Supported by:
National Natural Science Foundation of China（No. 10872076，50805059）

摘要/Abstract

摘要：

采用耦合的Poisson-Nernst-Planck(PNP)方程和Navier-Stokes(NS)方程,研究二维狭窄微通道行波电场电渗流数值解。将计算结果与普遍采用的滑移边界近似解进行了比较。结果表明：在边界滑移模型适用的范围内,两种算法具有较好的一致性,从而验证了耦合PNP方程算法的正确性;当双电层厚度较大、行波信号幅值较大时,采用耦合PNP方程更为合理。

关键词:

行波电渗流, 滑移边界, PNP方程, NS方程



Abstract:

Based on the NP equation for ion transport, NS equation for liquid flow and Poisson equation for electric potential, a numerical analysis was carried out to investigate the traveling-wave electroosmotic flow. A comparison of numerical solution using the PNP equations and approximate approach based on slip velocity boundary was made. The correctness of numerical simulation based on the PNP equations was verified. A mathematical model based on PNP equations should predict the qualitative and the quantitative behavior of traveling-wave electroosmotic flow more precisely in a much broader parameter range.

traveling-wave electroosmosis flow; slip boundary condition;

Key words: Poisson-Nernst-Planck(PNP) equation, Navier-Stokes(NS) equations

中图分类号:

TH302

陈波, 晁侃, 吴健康.

行波电渗流微泵的数值模拟和微泵流量影响参数研究

[J]. 中国机械工程, 2012, 23(5): 590-594.

CHEN Bei, CHAO Kan, TUN Jian-Kang.

Numerical Simulation of Traveling-wave Electroomotic Micropump and Effects of Parameters on Flow

[J]. China Mechanical Engineering, 2012, 23(5): 590-594.

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