摘要
通过交流电渗流的产生机制及对非对称电极交流电渗微泵驱动原理的分析,建立了交流电渗微泵的物理模型和数学模型.根据微通道内电势分布满足Laplace方程,确定了交流电渗微泵微通道内电势及电场分布.并且利用设定的微通道内流场的边界条件,对Navier-Storks方程进行了数值仿真计算,获得了微通道内电渗流流场,分析表明其仿真计算与实验结果具有较好的一致性.从而验证了交流电渗微泵理论模型的正确性,为进一步研究和分析非对称电极交流电渗微泵提供了理论工具和仿真手段.
Mathematical models of the physical processes of AC electroosmosis （AC EO） are presented after analyzing the mechanisms of AC EO flow and micropumps. The distribution of electric potential and electric fields was determined in accordance with the principle that the electric potential distribution in a micro channel satisfies the Laplace equation. Numerical simulations were conducted with the Navier-Stokes equation using the specified boundary conditions of velocity fields in the microchannel, and the electroosmotic flow field in the microchannel was derived. Analysis of the numerical results shows that the simulation is consistent with experimental evidence. The correctness of the theoretical model is verified, so it is both a useful theoretical tool and a simulation method for further research and analysis on asymmetric AC electroosmosis micropumps.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2007年第12期1367-1370,共4页
Journal of Harbin Engineering University
基金
高等学校学科创新引智计划资助项目(B07018)
关键词
交流电渗
微泵
非对称电极
数字仿真
AC electroosmosis
micropump
asymmetric microelectrode
numerical simulation
