NUMERICAL SIMULATION OF SAMPLE DIFFUSION IN ELECTROOSMOTIC RECTANGULAR MICROCHANNEL FLOWS
Numerical analysis of the diffusion of an impulse sample band in the rectangular microchannel was carried out using the control-volume-based SIMPLEC algorithm. The Poisson-Boltzmann equation was solved first to get the distribution of wall potential and ionic concentration. Another equation describing the external potential and the momentum equation was solved to get the distribution of external potential and developed flow field, respectively. Finally, the mass transport equation was solved to get the concentration field. The results show that aspect ratio of microchannel height to width has some effect on the sample band broadening, and it has been found that this kind of effect decreases with the decreasing of the aspect ratio in the developed flow field. The above conclusions are helpful to the optimization of the design of microfluidic devices.
Micro-channel electroosmotic diffusion numerical simulation
Fujun Can Jianzhong Lin Kai Zhang
State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University,Hangzhou 310027, C State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University,Hangzhou 310027, C
国际会议
The 4th International Forum on Post-genome Technologies(4IFPT)(第四届国际后基因组生命科学技术学术论坛)
杭州
英文
264-267
2006-09-25（万方平台首次上网日期，不代表论文的发表时间）